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Physical Activity - Science topic

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I would like to acquire a wereable metabolic system to use with a MoCap system in sports studies (jumping, running in a treadmill) and in human movment analysis studies (gait in a walkway, stairs...)
What is your experience and the best option with the next equipments? What is the advantage/disadvantage of each one?
-Cosmed K4b2
-Cosmed K5
-Cortex Metamax 3B
-Other system?
Thanks,
Best,
Jose Heredia-Jimenez
University of Granada. Spain
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Hola , dónde me podrían orientar sobre la página para comprar , para comprar un Cosmed k4 o k5
Saludos
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Hello. I'm trying to find out how to analyze the accelerometer-derived data in the NHANES 2011-2014 cycles (wrist-worn triaxial accelerometer). I want to transform the data to steps/day, but I'm not sure if there are equations to do it (e.g., from counts/minute to steps/minute), or do I need specialized software (e.g., Actilife)? I've read some articles analyzing the NHANES 2003-2006 cycles, but they used uniaxial accelerometers.
What article(s) would you suggest for me to understand how to proceed?
Best wishes.
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What tool do you use to make clinical decisions?
Example:
a)sum of criteria (signs - symptoms);
b)the weighting of clinical scales;
c)use of RPS form and application of a CORE set ICF and thus obtain an operating profile?
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I suggest going through the down-mentioned article, which was published in the American Journal of Physical Medicine and Rehabilitation in 2020. The article argues that several factors (related to the service organization and health system, besides the contextual personal/environmental factors) have a relevant influence on the decision-making in evidence-based practice in rehabilitation.
Good luck!
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To: All Students
Cc: Faculty Members
Subject: Invitation to participate in research about the inter-relationship between sleep pattern, physical activities and quality of life in students
Dear students
Within an international scientific research framework approved by the Institutional Review Board of Qatar University (QU-IRB 1510-EA/21) led by the College of Education, we would like to invite you to answer the following online survey about The inter-relationship between sleep pattern, physical activities and quality of life in students.
We would like to kindly ask you to do your best to answer all questions, if possible, because this will allow us to anonymously process and analyze the data, and thus, improve the knowledge in the field.
The estimated time to complete the survey is of about 20 minutes and it is available in three languages:
In case of any query, please feel free to email the lead principal investigator Imen Moussa-Chamari:
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Ok with great pleasure
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Although objective measures, such as accelerometers or pedometers, are best for assessing physical activity among youth, these devices are designed to detect ambulatory movement and, therefore, may not detect static movements such as those commonly used during resistance training. I would like to know if there are any existing measures that could be used to supplement objective physical activity monitoring in order to capture participation in resistance-based exercise. I assume that it would be self-report but ideally I would like to use/adapt an instrument with acceptable psychometric properties (e.g., face validity, criterion validity, test-retest reliability etc).
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Interesting
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Anyone have a SAS program to process data from the Recent Physical Activity Questionnaire (RPAQ)? The MRC lists a STATA syntax (https://www.mrc-epid.cam.ac.uk/physical-activity-downloads/), but I do not use STATA.
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Convert Stata to SAS.
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I am of the opinion that ACSM's Research Methods is one of the best books in this field and is a must-read.
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I would agree with your view. I do think, however, it depends on the level of the student and the intent of the program. I have used it within our graduate level Exercise Science program where students are required to do research and strongly encouraged to publish.
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I'm using a software developed for smartphones to estimate the time spent in different physical activity intensities based on cut-points established for triaxial accelerometers. But even with previously developed studies that suggest a relative equivalence of "counts" measured by Smartphones and Actigraph accelerometers (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4414958/), I'm not sure if even with an equivalent sampling rate I can use cut-points for "counts" established for triaxial accelerometers. Can I do that, or are the "counts" estimated through the smartphone different from those estimated by actigraph accelerometers, even for an equal sampling rate?
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Hi Douglas, according to my experience, sampling rate is not the only one factor that affect the 'count' or cut point establishment. Other than that, the placement of the sensor and the age of the population are also factors that can change the cut-point threshold. In addition, the way you preprocess the accelerometer data is also affect the result, for example: the paper threshold was based on filtered data but your accelerometer data was not filtered then the result may not valid.
There are many papers develop their own cut-points based on different sensors, placement, and target population. You can check below reference for more detail:
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I am interested in knowing if there is any research work exploring factors that may affect the way in which girls and boys (aged 9-12 yrs.) complete physical activity self-report measures (e.g., questionnaires). Do you know of any studies that indicate that girls record/adjust their subjective physical activity better (compared to device-measured physical activity) than boys?
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1. In children aged 7 to 10 years, there is a relationship between the accuracy of a simple motor response and testerone, which means that there are differences in the accuracy of reproduction of joint angles and amplitude of movement. After 10-11 years, boys will better memorize single movements faster.
2.After 10-11 years, differences in the level of manifestation of muscular endurance, absolute strength and speed-strength readiness. At the same time, movement is better retained in memory with an equal number of repetitions for which the most favorable age-related physiological period of development is now. If the number of hours of training is the same for boys and girls, then boys after 10-11 years old will remember faster and perform better motor tasks associated with the manifestation of muscular endurance, absolute strength, and speed-strength training than girls at the same age.
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how is the Effective of Implementation of Policy on Healthy Diet and Physical Activities Related to Control Strategies for Non-Communicable Disease, (provide more link is more welcome, please)
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Kindly check the following RG link:
In which interventional activities targeting the high-risk population seem to be effective in improving lifestyle behavior, increasing awareness and control of risk factors of the high-risk population.
Also, check the following RG link:
In which it indicates that policymakers in low- and middle-income countries urgently need to develop comprehensive and multi-stakeholder policies to improve dietary quality and physical activity.
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Hello All. Does anybody have the "Barriers to Physical Activity Questionnaire for People with Mobility Impairments (BPAQ-MI)"" ? I would be appreciated.
Regards
Sarvin
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Sorry
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Physical fitness is essential to allow people to carry out everyday activities. It is often particularly low in stroke survivors. It may limit their ability to perform everyday activities and also worsen any stroke-related disability. So, it is recommended that seniors do exercises in order to improve cognitive function, quality of life, and the ability to maintain physical activity. On the other hand, other researchers say that training programs increase the risk of having another stroke.
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Have a look at the following RG links.
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I can get the scale for your search
Levels of Physical Activity and Mental Health in
Adolescents in Ireland
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Hi Ali,
You can use the International Physical Activity Questionnaire (IPAQ), Its an internationally validated screen of physical activity for the past 7 days. You can use from 15-69 year old participants.
In terms of mental health what are you looking for exactly i.e., depression, etc?
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Is It Ethical Not to Prescribe Physical Activity for the Elderly Frail?
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Good Afternoon---Thank you so much for the reference. I really agree with your point---we should consider exercise as important as medication so that we can better keep our frail older adults healthy and without falls. It should be at the forefront of our discussions with patients. And there are so many ways to make it appealing: neighborhood walking, group exercise, community-based programs, and task-circuits set up for frail adults to ensure health status.. Activities can even be incorporated in nursing homes. Thank you for a great discussion.
Giné-Garriga, M., Guerra, M. & Unnithan, V.B. The effect of functional circuit training on self-reported fear of falling and health status in a group of physically frail older individuals: a randomized controlled trial. Aging Clin Exp Res 25, 329–336 (2013). https://doi.org/10.1007/s40520-013-0048-3
de Labra, C., Guimaraes-Pinheiro, C., Maseda, A. et al. Effects of physical exercise interventions in frail older adults: a systematic review of randomized controlled trials. BMC Geriatr 15, 154 (2015). https://doi.org/10.1186/s12877-015-0155-4
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Should we wait for vaccine against COVID-19 or also look towards other possible options to reduce mortality rate of Corona virus. Can Physiotherapists critically analyze the effect of exercise in Corona patients as exercise has cardio-respiratory effects as well as influence on Immunity.
Need your help and suggestions please?
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Regular exercise or physical activity improves the immunity of the body thus providing protection against the infectious diseases such as COVID-19.
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It is known that scientific knowledge is replicated each time at more unusual speeds, however, humanity expects more from our scientific work, that is, solutions to problems that have accumulated and that it is necessary to solve to improve the quality of life . It would be good to reflect on those expectations.
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The experience of the development of science shows that the quality and significance of a scientific discovery and its usefulness or harm for human civilization are inversely dependent on any expectation, be it the expectations of the entire scientific community, and even more so the expectations of a "non-professional" society. For example, it is known that the great Rutherford, who discovered the atomic nucleus, believed that his discovery would have no practical application.
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I am looking for Dataset regarding PARM.. someone can share links or Email me on
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IPAQ or international physical activity questionnaire has separate part about leisure time activity.How to analyze this part to get value and can this questionnaire use to access the physical activity of postpartum  mothers?
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Možete pogledati obradu upitnika o tjelesnoj aktivnosti u mojoj disertaciji (2017).
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Research title:
The effectiveness of gamified virtual reality for increasing adherence to exercise, affecting perceived exertion and improving mental and physical health: A preliminary study
Any feedback/suggestions would be greatly appreciated. I've also considered splitting this into multiple papers, however I feel that these variables are all interlinked.
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Not necessarily too complex... just too much jargon.... you can try something more simple like this:
A preliminary investigation into the effects of virtual reality videogame play on exercise adherence, ratings of perceived exertion, and mental and physical health
.... or if you have the results then you can change the title to reflect that. Using the terms "effect" or "effectiveness" is ambiguous... does is improve, enhance, increase... etc.!? If so, then you can adjust the title accordingly. Good luck!
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Please share your oppinions. If possible, provide some useful references.
Thank you.
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Wang M, Baker JS, Quan W, Shen S, Fekete G, Gu Y. A Preventive Role of Exercise Across the Coronavirus 2 (SARS-CoV-2) Pandemic. Front Physiol. 2020;11:572718. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7506115/pdf/fphys-11-572718.pdf
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Hello to the scientific community,
Between the global physical activity questionnaire (GPAQ) of the world health organization and the international physical activity questionnaire (IPAQ) which is the most suitable and best recommended questionnaire to assess the level of physical activity?
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Dear Researcher,
Good day.
First at all, in academic research's world is actually no such how appropriate is one instrument been used to measure to all type of study but it is regarding or according to one's study designated Research Questions or "Gap" that would like to fill up ok?
Secondly, researcher may need to read thru both instruments thoroughly and make decision that still fall back to your study's intention or objectives concerned. TQ.
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International Physical Activity Questionnaire
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Javier Brazo-Sayavera thank you for sharing your answer; i Will read it and i hope that we can collaborate about same research.
thank's.
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I want to measure the PA by the short IPAQ.
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Farid Mouissi I have created a couple of tools to calculate the variables from IPAQ short and long version.
They are available in my profile:
Long version tool -> Code IPAQ-LongForm spreadsheet tool
Short version tool -> Code IPAQ-ShortForm spreadsheet tool
I hope they are useful for you.
Best.
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Hi,
I read an article from Kathleen F. Janz, Elena M. Lutuchy, Phyllis Wenthe and Steven M. Levy called Measuring Activity in Children and Adolescents Using Self-Report: PAQ-C and PAQ-A.
They rescaled question 1 regarding this formula: Q1rescaled = 4(q1 - 1)/(1.7(max raw score) - 1) + 1. Does somebody any idea why? And could me somebody help to understand this formula?
It's unclear for me... Thanks. Marcela
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The researchers were taking steps to make the question comparable to the rest of the questionnaire. As Albert Ziegler stated above, they are converting it to the same 1 -- 5 scale as the other questions.
From the article, Page 769: "The revised scoring strategy also included a rescaling of question 1 to reflect a range consistent with the other questions."
Page 769: "PAQ-A questionnaire responses ranged from 1 to 5 for all items except Q1, which ranged from 1 to 1.7."
Page 770: "Question 1 was rescaled so that it contributed to the summary score similarly to the other PAQ-A questions."
Page 770: "When these questions were eliminated and question 1 was rescaled so that it contributed to the summary score similarly to the other PAQ-A questions, associations between the PAQ-A (revised) summary score and the activity monitor variables were rho = 0.56 for total PA and rho = 0.63 for MVPA."
Page 771: "We also improved the validity of the PAQ-A by rescaling an item (Q1) that was strongly associated with the activity monitor (rho = 0.63)."
So, the rescaling seems to have worked in terms of providing stronger associations, and thereby more evidence of validity for the self-report instruments. Another way to say this is that their rescaling technique has apparently reduced bias toward the null hypothesis.
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I have recently incurred a radial nerve injury in my upper left arm, and am never of the mind that rest is what I need (lost time is lost time). Thus I have initiated some short term experiments while I have this injury, and am interested in learning what thoughts and experiences others have.
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I stop training so as not to aggravate the consequences of the injury.
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I am interested in martial arts and physical abilities, but not excluding other points of views.
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I have extensive experience in Kyokushinkai karate, including a number of scientific studies.
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I am trying to find validated cut-points for PA in adolescents using wrist-worn ActiGraph wGT3X+ accelerometers. For the young participants in my cohort I am using the cut points proposed by Chandler (Paediatric Obesity; 2016; 11[2]) but these are only applicable to children aged 8-12 years. I have so far been unable to find accepted cut points for adolescents for wrist-worn devices.
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Brazendale et al., 2016: Equating accelerometer estimates among youth: The Rosetta Stone 2 will be your best overview of all cut-points available. You can find it on researchgate. A secondary consideration relates not to age, but to activity type. Keep in mind that you may find cut-points related to age but not to activity type. For example, when considering wrist worn cut-points, are your activities largely continuous or discrete in nature?
-Brazendale, K., Beets, M. W., Bornstein, D. B., Moore, J. B.,
Pate, R. R., Weaver, R. G., … van Sluijs, E. M. F. (2016).
Equating accelerometer estimates among youth: The
Rosetta Stone 2. Journal of Science and Medicine in Sport,
19(3), 242–249. doi:10.1016/j.jsams.2015.02.006.
-Crouter, S. E., Flynn, J. I., & Bassett, D. R., Jr. (2015).
Estimating physical activity in youth using a wrist
accelerometer. Medicine and Science in Sports and
Exercise, 47(5), 944. doi:10.1249/MSS.0000000000000651
-Chandler, J. L., Brazendale, K., Beets, M. W., &
Mealing, B. A. (2016). Classification of physical activity
intensities using a wrist-worn accelerometer in 8-12-
year-old children. Pediatric Obesity, 11(2), 120–127.
doi:10.1111/ijpo.12033
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What are the main factors associated with physical activity during middle or high school physical education?
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Nice Dear Harshvardhan Singh
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Hello everybody! We are carrying out a research where we associate baseline to post-intervention changes between motivation and physical activity variables. My question is the following: In an experimental group, if I have a NEGATIVE association between INCREASES in introjected regulation and DECREASES in sedentary activity, how should I interpret it? Do you have any example of reference that describes this type of results between changes or similar? Many thanks in advance! Cheers.
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There are several factors used in many cases. The best of them is known as the Pearson product-moment correlation coefficient, or the Spearman's correlation coefficien.
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Do you know Adolescents specific Review?
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Thank you Parsa Arbab , looks very good.
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To give you a breif summary of my work, I am mostly looking at the percentage time a participant spends in a certain play state when compared to the entire observationn duration. I was using parametric measures to analyse the data provided that all assumptions were met. However, I have recently come across CoDA (Compositional Data Analysis) and a recent study which shows significant differences between standard tests and CoDA tests. My question is whether it is neseccary to redo my data analysis or whether it would be ok to continue using standard testing meassures. Most instructions on CoDA also get a little bit too technical for me to understand. I have been struggling to really wrap my head around the differences betweeen the methods and how to accurately do CoDA. I am attaching the paper citation mentioned for your reference.
Gupta, N., Mathiassen, S. E., Mateu-Figueras, G., Heiden, M., Hallman, D. M., Jørgensen, M. B., & Holtermann, A. (2018). A comparison of standard and compositional data analysis in studies addressing group differences in sedentary behavior and physical activity. International Journal of Behavioral Nutrition and Physical Activity, 15(1), 53.
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Hi Kiyoshi Bhuiyan , compositional methods and conventional methods can give occasionally similar results, and sometimes really different ones. The problem is you never know, and sometimes conventional methods can give spurious results. I would recommend to use compositionally compliant methods. You can ask Javier Palarea-Albaladejo in Edinborough for advise.
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We are in the middle of a crisis, in the quarantines. Irresponsible behavior has brought us to our current state. We did not learn any lessons learned from viruses that preceded and resembled the COVID-19 virus. Today's topic is not the reason that led us to this situation but commenting on the measures we have taken. The study of (Bishwajit et al., 2017) examined the effects of physical activity on depression. Their study had a representative number of middle- and older-aged subjects (7204). They concluded that a lower frequency of vigorous physical activity was significantly associated with higher rates of depression diagnosed. Depression symptoms and physical inactivity are factors that are closely correlated with obesity (Garimella et al., 2016). The elderly population has a prevalence of anxiety and depression around 10 and 12 %, these findings are caused as a consequence of different factors. Health-related quality of life and physical function play an important role in depression and anxiety (Sousa et al., 2017). The logical conclusion is that physical activity can reduce the levels of depression. Many studies have addressed this topic. Throughout history, our race has evolved. From the beginning of the cognitive, through the agricultural and industrial revolution to the present, we can observe a trend of decline in physical activity. This trend was accompanied by the appearance of metabolic and chronic diseases. Chronic diseases are major killers in the modern era. Physical inactivity is the primary cause of most chronic diseases. (Booth et al., 2011). Physical activity primarily prevents, or delays, chronic diseases, implying that chronic disease need not be an inevitable outcome during life.
This brief introduction is just a small overview of the literature that has examined the topics of physical inactivity, depression, and chronic illnesses.
Because we are in quarantine, and our movement is restricted and in some environments disabled we face many difficulties. Speaking personally and listening to people from my surroundings, from a psychological point of view, quarantine has a rather negative impact on people. With this, the media and the internet, which is full of misinformation, make people panic.
The following questions are:
  • Is quarantine an ethical solution?
  • How will this inactivity affect people?
  • How will inactivity affect obesity, chronic diseases, and ultimately, mortality?
Reference:
Bishwajit, G., O’Leary, D. P., Ghosh, S., Yaya, S., Shangfeng, T., & Feng, Z. (2017). Physical inactivity and self-reported depression among middle-and older-aged population in South Asia: World health survey. BMC geriatrics, 17(1), 100.
Booth, Frank W., Christian K. Roberts, and Matthew J. Laye. "Lack of exercise is a major cause of chronic diseases." Comprehensive Physiology 2, no. 2 (2011): 1143-1211.
Garimella, R. S., Sears, S. F., & Gehi, A. K. (2016). Depression and physical inactivity as confounding the effect of obesity on atrial fibrillation. The American journal of cardiology, 117(11), 1760-1764.
Sousa, R. D. D., Rodrigues, A. M., Gregório, M. J., Branco, J. D. C., Gouveia, M. J., Canhão, H., & Dias, S. S. (2017). Anxiety and depression in the Portuguese older adults: prevalence and associated factors. Frontiers in medicine, 4, 196.
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You have touched on an interesting problem of long-term and epidemic-related effects. No one is dealing with them right now because of the current situation but in a few months, we will see a terrifying summary of what happens.
Patients have worse control of chronic diseases due to difficult access to health care and almost not existing private health care sector. Quarantine is associated with a lack of physical activity, social life and developing bad eating habits. It will result in a higher suicide rate, higher chronic diseases mortality.
In my opinion, two weeks of restricted quarantine won't lead to increased obesity. Although the quarantine should last as long as the pandemic will end, and we don't know how long it'll take...
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One month data. According to WHO the recommended dose of physical activity (PA) is 8000 steps per day. Are these true levels of PA or a reflexion of job burnout? And how this PA is related to Heart Rate Variability (HRV)? Is it useful to set limits of PA?
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Dear M.Dimitros,
I don't find any recommandations of steps per day by the WHO, but some people try to translate physical activity's recommandations in steps per day. The recommanded number of steps per day is still under discussion, in particular depending on the public health objective.
Did you know this review by Bassett Jr on step counting history, information about step/day and health ?
Below, some data about cardiac autonomic variation after walking
I don't know if there is a need to set limits in physical activity because I think that this limits are personal, dependant on medical condition.
I hope this could help,
kind regards
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Are they some strong Relationship between physical activity, emotional intelligence, self confidence and HAPPINNESS ?
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i dont know but i think a effective in mental health
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I am trying to understand the difference between a structured and a semi-structured questionnaire with regard to the following sub-themes.
1. Is their freedom to add new questions to a semi-structured questionnaire OR is the freedom only to do with the wordings of the questions and the order in which they are to be asked?
2. If I am sending out an on-line questionnaire, Will it always be a structured questionnaire.
Would appreciate a discussion and any response will be valuable
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Structured questionnaire
· A structured questionnaire is a type of interview in which the interviewer asks a particular set of predefined questions.
· Questions are planned and created in advance, which means that all respondents are asked the same questions in the same order.
  • Consist of closed or prompted questions with predefined answers.
  • The researcher has to anticipate all possible answers with pre-coded responses.
  • They are used in large interview programmes (anything over 30 interviews and more likely over 200 interviews in number) and may be carried out face-to-face, self-completion and over the tel-phone, or depending on the respondent type, the content of questionnaire and the budget.
Semi-structured questionnaire
· A semi-structured questionnaire is a type of interview in which the interviewer asks only a few predefined questions while the rest of the questions are not planned in advance.
· In semi-structured interviews, some questions are predetermined asked all sample respondents, while others arise spontaneously in a free-flowing conversation.
  • Comprise a mixture of closed and open-ended questions.
  • They are commonly used where there is a need to accommodate a large range of different responses from respondents.
  • The use of semi-structured questionnaires enables a mix of qualitative and quantitative information to be gathered.
  • They can be administered over the telephone or face-to-face.
In both types of the questionnaire, there are two major issues that can have a bad effect on both the quality of your data, and a respondent’s attitude towards your research.
· These are using excessively long questionnaires, and repetitive questioning techniques.
· Variety is the spice of questionnaires, as well as of life!
· Use lots of different question types to stop respondents getting bored.
· Stimulus materials, such as show cards and advertisements, can also help provide texture in the interview.
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If you have some papers to advise me, I am interested in.
Thank you in advance
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I am looking for Finnish versions of the International Physical Activity Questionnaire - Long Form and Nordic MSK Questionnaire (Kourinka et al, 1987). Any help would be appreciated!
Iva
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Dear Iva,
In recent research Päivärinne et al. has used the Finnish version of the International Physical Activity Questionnaire (IPAQ) long version. I would suggest to you to contact the authors (ville.paivarinne@helsinki.fi):
Päivärinne V, Kautiainen H, Heinonen A, Kiviranta I. Relationships of leisure-time physical activity and work ability between different occupational physical demands in adult working men. Int Arch Occup Environ Health. 2019 Jan 31. doi: 10.1007/s00420-019-01410-x. [Epub ahead of print]. https://link.springer.com/content/pdf/10.1007%2Fs00420-019-01410-x.pdf
Päivärinne V, Kautiainen H, Heinonen A, Kiviranta I. Relations between subdomains of physical activity, sedentary lifestyle, and quality of life in young adult men. Scand J Med Sci Sports 2018;28(4):1389-1396. https://onlinelibrary.wiley.com/doi/abs/10.1111/sms.13003
Best wishes from Germany, Martin
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For a clinical study on post-operative physical activity, I would like to use a questionnaire to find out how active recruited patients are in general / have been before the surgery. I know about IPAQ (too long for our purpose) and its short form (not the best validity), but am not absolutely happy with either of them. Does anybody have a recommendation for a questionnaire that is short and sufficiently validated, or might at least be a good compromise?
Thank you all in advance!
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Please check
1. Lee PH, Macfarlane DJ, Lam TH, Stewart SM. Validity of the International Physical Activity Questionnaire Short Form (IPAQ-SF): a systematic review. Int J Behav Nutr Phys Act. 2011;8:115. Published 2011 Oct 21. doi:10.1186/1479-5868-8-115
2. GEORGE PAPATHANASIOU , GEORGE GEORGOUDIS , MARIA PAPANDREOU , PANAGIOTIS SPYROPOULOS , DIMITRIS GEORGAKOPOULOS , VASILIKI KALFAKAKOU , ANGELOS EVANGELOU. Reliability Measures of the Short International Physical Activity Questionnaire (IPAQ) in Greek Young Adults. Hellenic J Cardiol 2009; 50: 283-294
3. Shenoy S, Chawla JK, Sandhu JS. Validation of short international physical activity questionnaire Punjabi version in India . Saudi J Sports Med 2014;14:77-82
4. Paul H Lee, YY Yu, Ian McDowell, Gabriel M Leung,TH Lam and Sunita M Stewart. Performance of the international physical activity questionnaire (short form) in subgroups of the Hong Kong chinese population.International Journal of Behavioral Nutrition and Physical Activity20118:81
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A neat and smooth way of life, avoiding the acquisition of inadequate health habits, as well as certain foodstuffs, and the sensitivity which can be a cause of neurological disease, including MS, may also be cure for the disease
Such a macrobiotic diet, and low radioactive water (cca 6 Becquerel / Bq) lower temperatures (18-20° C), swimming pool and professionally indicated and controlled use of corticosteroids, symptomatic therapy and immunomodulatory drugs in different phases of the disease, proved to be very useful in many cases the form of RR MS, as evidenced by reports of many research papers, observations, the patients themselves and their medical practitioners.
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valuable contribution
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Does anyone know the Metabolic Equivalents (METs) for the Youth Physical Activity Questionnaire (Y-PAQ)? I was able to find most, but not all, of the physical activities on website of the Compendium of Physical Activities.
However, a few activities (e.g., netball) are missing, and I wonder whether anyone has a list of the METs for each activity on Y-PAQ.
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Thanks Chu. I will go through it
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Firstly, is it correct to describe the study as an AB/BA crossover design if I have 2 conditions and 2 periods but all participants were followed-up at 16-months post-intervention also?
Secondly, are there any useful resources I can refer to, to figure out how to correctly analyse the data using SPSS?
Measurements were taken pre and post period 1 and then pre and post period 2 and again at 16-months post-intervention.
4 schools with 11 class groups were included. Before baseline 2 schools (6 class groups) were assigned to the AB condition and 2 schools (6 class groups) were assigned to the BA condition. A was a control condition where groups continued with normal PE lessons and B was the intervention condition (8-week intervention focusing on fundamental movement skill development). A 4-week washout period was included before groups crossed over for period 2. All participants were assessed for FMS proficiency and BMI across 5 time-points.
Time 1: Period 1 pre-test
Time 2: Period 1 post-test
4-week wash-out period, then groups crossed over for period 2
Time 3: Period 2 pre-test
Time 4: Period 2 post-test
Time 5: 16-month post-intervention 
Research questions:
1. can an 8-week intervention programme lead to significant improvements in FMS proficiency levels?
2. can any improvement in FMS proficiency levels be maintained over time?
3. do the effects of the intervention programme vary by sex and/or weight status?
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Béatrice Marianne Ewalds-Kvist thank you for your suggestion.
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I've seen a lot of work talking about how chronic physical activity (PA) improves cognition, and that this is likely to come about due to changes in hormone and neurotransmitter levels (e.g. BDNF)
Im wondering what biological mechanisms are responsible for the benefits of acute PA?
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TBH I don't know and I think no one has the exactly answer yet.
If you want only a GUESS, thinking about acute effect, I think it could be more related with increase of the firing probability of neurons by an increase of BDNF, and activation of NMDA receptors, increasing of the KCC cotransporters decreasing the intracellular Cl- thus modulating the GABA function to be more inhibitory, creating less noise in the neural net by errors in the individual probability of each neuron.
But, I never saw a paper with all those things togethers.
There are a lot of anothers pathways, but I think you want to see in a very short therm, so you want to see the firing pattern.
Still, I will wait some more accurate answer and learn together you :)
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Hello everyone,
we use the Global Physical Activity Questionnaire (GPAQ) quite a lot in our research but are still unsure how to cite it properly. Some studies use the WHO-website (1) as a reference, some others the publication of Armstrong&Bull (2).
Which one would you recommend?
Best regards,
Kevin
(1) World Health Organization: WHO STEPwise approach to NCD risk factor surveillance. World Health Organization (ed.). Surveillance and Population-Based Prevention, Prevention of Noncommunicable Diseases Department. Geneva, Switzerland. https://www.who.int/ncds/surveillance/steps/GPAQ/en/)
(2) Armstrong, Timothy; Bull, Fiona (2006): Development of the World Health Organization Global Physical Activity Questionnaire (GPAQ). In: J Public Health 14 (2), S. 66–70. DOI: 10.1007/s10389-006-0024-x.
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Thanks for your reply, Matt. That would be the publication by Armstrong&Bull. So, I should take that one in your opinion, right?
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I am Working on Physical Activity in Pakistan.
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i need need urdu questionnaire. i have already got permission of Urdu translator/developer but could not get the questionnaire. please send me at
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Age 12 -18
FFQ
GPAQ A
QPAQ C
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Checkout the NCCOR Measures Registry and User Guides - www.nccor.org
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I'm still struggling with this idea about active sitting.
Many of the big issues about movement have long been known. For example, in Kilbom's review in 1986 (cite below) she described in great length the many health disorders associated with the reduction in movement, such as associated with shifting from being a secretary in the 1970's to becoming a data entry operator. She very clearly explained the various impairments to heart disease, peripheral venous disorders, arthritis, and so on - and the reasons for our inability to feed the cells (especially in the spine) and eliminate waste products. So the information about the basis for active sitting has been there for quite a while. And certainly the newer research on ligaments over the last decade have a lot of implications.
But the question I have is how we can justify taking away the backrest and armrest in a primary chair. Active sitting makes sense to me as a second chair or for special situations such as populations with good core muscle control or specific disabilities or for certain tasks. But where is the evidence that active sitting even works? The majority of studies on sitting balls, for example, suggest there is little or no benefit. And Dr. Goossen's study in press in Ergonomics suggesting that movements actually reduce in the type of dynamic seating he looked at.
Dynamic seating and active seating are just garbage terms now that completely obscure the issues by lumping everything together, when the different types are quite different.
Kilbom, A. (1987). Short- and long-term effects of extreme physical inactivity: a brief review. In: Knave, B. and Wideback, P.G. (Eds.) Work with display units, Elsevier Science Publishers B V (North-Holland), Amsterdam, p. 219-228.
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I believe so..Dr Rani Lueder
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I am designing a physical activity framework for children with Cerebral Palsy attending special schools in South Africa. Most PA frameworks target children with CP classified from GMFCS I - III and GMFCS IV and V are generally neglected. Do you know studies that include IV and V? Please assist by sharing your thoughts and possible articles. Thanks
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Dear Entedhar Serhat, thank you very much for the articles which are relevant to my study... much appreciated. Blessings to you
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Many studies suggest that virtual reality rehabilitation can activate the cerebral cortex and improve the function of patients with neurological impairments. Also we hear hippo therapy has a positive effect on the physical function and psychological problems of children with Autism.
May hippo therapy and virtual reality together lead to overall improvements in the daily functioning and quality of life of these children?
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What do you mean regarding "cure for autism"? In my opinion, there's nothing beyond genetics that could lead for a cure. Of course, those activities when apllied in a correct manner would improve quality of life, cognition, motor control, social aspects... but cure? I don't believe.
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I am currently an investigator in a CRT using gamification to reduce obesity. Part of the intervention is to provide schoolchildren and one family member with an activity tracker and reward those who exceed a threshold of steps with points.
For the pilot study, we purchased two activity trackers: Omron HJ-324U and Jawbone UP Move. The data cannot be extracted in bulk.
Do you have any guidance on which trackers allow bulk data extraction or how this can be done?
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A little late to the party, but the Fitbit Zip would allow you to have a central capture "site." You can start a "Fitbit Challenge" and extract data off their website (either by hand or through an API).
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A lot of research in my field is conducted using Actigraph accelerometers and I would say 99% of the papers I've seen report "actigraph counts" as their outcome variable of interest. These counts are categorized into different intensities (e.g. moderate, vigorous physical activity)
However, I have a project where I'm collecting raw triaxial accelerometer data (from a smartphone in this case) and I would like to find an algorithm/cutpoints/thresholds that can convert raw triaxial acceleration to actigraph counts for the different intensities. Are there any papers that explain how this conversion is done?
I've seen a few papers discussing how to convert uniaxial acceleration to counts, but not sure how I would extend that to all 3 axes
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Hi Simon
i would refer you to much of the work Dr Vincent van Hees has conducted. For this particular question, I would recommend the article - "A method to compare new and traditional accelerometry data in physical activity monitoring" (van Hees et al, 2010). Briefly, it requires a full wave rectification of the integrated raw acceleration signal. As I mentioned, however, refer to that paper for greater detail.
BW
Cain
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the very routine method of learning of an skill or subject is physical practicing. such as reading, driving or just talking. but can it maybe possible to learn skills with just imagining them and being focus on them? if it is possible, a new learning method can be learn with just mind!
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No, definitely not. It depends on prior knowledge, motivation, minimal required skills, and the whole thing happens only in the zone of proximal development (Vygotsky).
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Media use and physical activity can have a positive or negative impact on health. Is there a model that theoretically justifies and describes the mechanisms of action?
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On first read i thought you meant physical inactivity, but was intrigued with physical activity and media usage. personally I think they have opposing effects on health. will love to read a study on this
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I am interested in how the Baecke questionnaire can be used with adults who do not work.
The Questionnaire has a modified version for older adults
(Pereira MA, FitzGerald SJ, Gregg EW, Joswiak ML, Ryan WJ, Suminski RR, Utter AC, Zmuda JM. A collection of Physical Activity Questionnaires for health-related research. Med Sci Sports Exerc 1997 Jun;29(6 Suppl):S1-205)
But not one that may be adjusted for use with adults who do not work. Your views would be much appreciated.
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I'm also wondering what type of tool or questionnaire would be appropriate to use for assessing physical activity level of individuals with CLBP living in rural community considering majority of these individuals do not work and neither engage in sporting activities.
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I would like to hear your experiences.
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Hello Elif,
I'm working with accelerometers and we are working on a project to compare reliability and validity of them and some devices as watches. I suggest you to consider what kind of physical activity you want to measure and if you need to identify them (e.g. walk, run, or bicycling). If you want to measure steps and intensities of PA, the accelerometers could be useful. However, if you want to identify the kind of PA you couldn't do it by accelerometers.
In term of results, they could be influenced by the place where participants have to wear the accelerometers or another electronic devices. Besides, there are differences linked to cut off for each intensities of PA and wearing time.
Best regards,
Gonzalo
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Hi there, 
In Poland we have a specified period of time in which we should conduct the research with IPAQ, mainly because of the weather conditions.
What is the situation in Spain and Italy? Are there also any period of time limitations to conduct study? I could not find any information...
Will be grateful for any help. As always...
All the best, 
Małgorzata 
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Hello,
Thank You for adding an answer.
What age of respondents do you research?
Adolescents, students, adults? If You would like we could cooperate within research. Write to me a private message with email.
Best regards from Poland
Małgorzata
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I am interested in using a physical activity tracker across a large population of children (aged 8-14), which would not only allow children to track their own activity and for researchers to implement behavior change techniques (goal setting etc), but also for researchers to collect the real-time data as well.
Does such technology exist or are current trackers reliant upon the participant to upload data to an app and then researchers access the data from a central point/hub?  
Any guidance would be great
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I would suggest some accelerometers. Maybe they are not ideal but quite good objective method.
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Hi there, 
I look for other people who will participate in Conference HEPA 2017 in
Zagreb.
I think that knowing each other before going there will be a great opportunity to
exchange our research topics and expieriences and together await this great
event. Furthermore, it could be a great occasion to  consider future
cooperation!
My topic deals with the Level of Physical Activity  and Attitude to Physical Education classes of the Youth from Eastern Region of Poland.
Looking forward to hearing from You!
Małgorzata Wasilewska (Poland)
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Hello Małgorzata,
I work at the University of Miskolc (Hungary) and I will attend the conference in Zagreb. We have more research regarding the regular exercise in children and adolescents (both of healthy and diabetic). At this moment, we examined the preventive role of the regular exercise in the health risk behaviours among adolescents.
Maybe we can have an interesting international collaboration even with more partners.
Let’s meet in Zagreb!
Best,
Andrea
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i want to assess the physical activity of the diabetics and its association with diabetes control and quality of life along with other variables.
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Please let me know if this reference/site is helpful to you:
Patient-reported physical activity questionnaires: A systematic review ...
https://www.ncbi.nlm.nih.gov › NCBI › Literature › PubMed Central (PMC)
by K Williams - ‎2012 - ‎Cited by 37 - ‎Related articles
Mar 13, 2012 - When deciding to assess physical activity as an outcome measure, researchers .... 6 = totally limited), scoring (e.g. total score or average), direction of scale (uni- ... A brief content analysis was also conducted for the populations for which the ...... Impact Scales (EDIS) in elderly patients with diabetes
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Faculty Position - Biomechanics / Exercise and Sports Sciences / Manipal University
Department of Exercise and Sports Science, School of Allied Health Sciences at Manipal University is a multi-disciplinary set up with a goal of building human resources in the form of sports scientists, strength and conditioning specialists, exercise physiologists, biomechanists, who would in turn enable people to optimize human performance for sport excellence and health
Manipal University has been a distinguished higher education institution in India with a diverse student population of over 25,000 and 2500 faculty members offering top-notch programs in health sciences, engineering and management. The university has world-class facilities and innovative pedagogic practices, which are constantly upgraded with a vision of global leadership in human development, excellence in education and healthcare.
We are looking for a highly motivated individual with 
· A Master of Science or PhD (desirable) in Biomedical/Mechanical Engineering, Kinesiology, or related disciplines 
· Background in biomechanics
· Highly passionate about sports
· Past experience teaching undergraduate and graduate coursework (desirable)
· Evidence of conducting research through conference presentations and research publications (Scopus-indexed) is a plus
Previous experience with Vicon or other motion analysis systems (Motion Analysis), programming languages such as Matlab, is required. 
Center for sport science, medicine and research (Est.2016) is a dedicated service wing of the department that is aimed at offering comprehensive sports medicine/science services. The center is equipped with 8 camera Vicon system, AMTI force plate, multiple high speed cameras, pressure sensors and speed gun to perform 2D/3D movement analysis. The center also possess state of the art equipment for physiologic and performance evaluation in Monark & h/p/cosmos ergometers, metabolic cart (COSMED K5), Fitmate pro and and lactate analyzers. The research center is located at the University's indoor sports complex, Marena. Marena is 1,45,000 Sq.ft centrally cooled facility which offers world class sport and fitness infrastructure to students and staff. Faculty gets access to the equipment and the athletic population for conducting research studies to enhance sports performance and injury prevention.
To apply for this position, please send detailed curriculum vitae, degree certificates and transcripts to the undersigned by email. For queries about the position, please contact me via email or phone during regular business hours (9 AM-5PM IST)
Dr. Fiddy Davis, PhD
Associate Professor and Head- Department of Exercise and Sports Science
School of Allied Health Sciences. Manipal University
Email: fiddy.davis@manipal.edu Phone: (+91)820 -2922032/23293
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Dear Radivoj
I am an exercise physiologist. I am working as an assistant professor for past 2 years. Kindly clarify whether you have teaching experience after your doctoral degree. Depending on the experience, salary differs. But I assure you that you will enjoy the  work environment.
The cost of accommodation is cheap (around 1/7 th of your salary). The food is reasonable. Kindly contact Dr. Fiddy davis (HOD) on his mail id fiddy.davis@manipal.edu or phone 9448252299 through sype.
Contact me for further details
Baskaran Chandrasekaran
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What is your experience of using 6 MW Apps? Do you use step count based ones or GPS based? How do they relate to the formal ATS 6 minute hall walk test?
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Hello Mr. Howard, 
I have no experience of using 6 MW Apps but If you need step count or/and GPS, I suggest you this article that I found when I was working with accelerometers. 
javascript:"Novel algorithm for a smartphone-based 6-minute walk test application: algorithm, application development, and evaluation" by Nicole A Capela, Edward D Lemaire, and Natalie Baddour (2015). 
Best regards,
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Many physicians and physiotherapists advise their patients who have knee osteoarthritis whether in earlier stage or late and chronic stage to stop stair climbing and use lifts if available.
Is this logic suitable for all types of patients with knee osteoarthritis?
Is there any evidence or published article that discuss this issue?
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there is a mechanical association....
however it becomes relevant when there is a predisposing  factor like altered bio mechanics / .....
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What type of Accelerometers should I use? What are the things should I consider?
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Hi Munshi
There is a company called Acosense that use accelerometers to detect liquid properties. They use a correlative method where the input is known and correlated to the vibration input. It takes time to build up this knowledge. You might want to talk to them - I believe that the method is patented. 
Detecting pulsation inside the pipe from accelerometers does not work as well as using piezocables, see Figure 3 here.
Accelerometers do not work as well as strain gauges who in turn do not work as well as a sensor that is orthogonal to pipe wall bending.  
Sincerely
Claes
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interested in use of partial body weight supported exercise on treadmill using the unweighting systems
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Dear Terry,
Here are further studies on the subject:
Valentin-Gudiol M, Bagur-Calafat C, Girabent-Farrés M, Hadders-Algra M, Mattern-Baxter K, Angulo-Barroso R. Treadmill interventions with partial body weight support in children under six years of age at risk of neuromotor delay: a report of a Cochrane systematic review and meta-analysis. Eur J Phys Rehabil Med. 2013;49(1):67-91. http://www.minervamedica.it/en/journals/europa-medicophysica/article.php?cod=R33Y2013N01A0067
Ribeiro T, Britto H, Oliveira D, Silva E, Galvão E, Lindquist A. Effects of treadmill training with partial body weight support and the proprioceptive neuromuscular facilitation method on hemiparetic gait: a randomized controlled study. Eur J Phys Rehabil Med. 2013;49(4):451-61. http://www.minervamedica.it/en/journals/europa-medicophysica/article.php?cod=R33Y2013N04A0451
Burnfield JM, Irons SL, Buster TW, Taylor AP, Hildner GA, Shu Y. Comparative analysis of speed's impact on muscle demands during partial body weight support motor-assisted elliptical training. Gait Posture. 2014;39(1):314-20. http://www.sciencedirect.com/science/article/pii/S096663621300444X
Van Kammen K, Boonstra A, Reinders-Messelink H, den Otter R. The combined effects of body weight support and gait speed on gait related muscle activity: a comparison between walking in the Lokomat exoskeleton and regular treadmill walking. PLoS One. 2014;9(9):e107323. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4167325/pdf/pone.0107323.pdf
Brasileiro A, Gama G, Trigueiro L, Ribeiro T, Silva E, Galvão É, Lindquist A. Influence of visual and auditory biofeedback on partial body weight support treadmill training of individuals with chronic hemiparesis: a randomized controlled clinical trial. Eur J Phys Rehabil Med. 2015;51(1):49-58. http://www.minervamedica.it/en/journals/europa-medicophysica/article.php?cod=R33Y2015N01A0049
Ganesan M, Sathyaprabha TN, Pal PK, Gupta A. Partial Body Weight-Supported Treadmill Training in Patients With Parkinson Disease: Impact on Gait and Clinical Manifestation. Arch Phys Med Rehabil. 2015;96(9):1557-65. https://www.researchgate.net/publication/277238525_Partial_Body_Weight-Supported_Treadmill_Training_in_Patients_With_Parkinson_Disease_Impact_on_Gait_and_Clinical_Manifestation
Swe NN, Sendhilnnathan S, van Den Berg M, Barr C. Over ground walking and body weight supported walking improve mobility equally in cerebral palsy: a randomised controlled trial. Clin Rehabil. 2015;29(11):1108-16. https://www.researchgate.net/publication/271648447_Over_ground_walking_and_body_weight_supported_walking_improve_mobility_equally_in_cerebral_palsy_A_randomised_controlled_trial
Best wishes from Germany,
Martin
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what is the best mental test to assess the effect of dietary supplements on central fatigue after high intensity exercise?
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For mental cognitive testing, you may want to look at the Uchida-Kraepelin test. The Wisconsin Card Sorting Test and the Tower of London are also commonly used to assess flexibility and planning. Good luck!
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We are comparing caloric expenditure using METs to determine distances covered between different exercises.
Eg: what is the bicycling equivalent of walking in miles
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You can find MET charts of different activities in textbooks such as McArdle's "Exercise Physiology" or in the 2011 Compendium of Physical Activities paper: https://www.ncbi.nlm.nih.gov/pubmed/21681120
You can compare the bicycling equivalent of walking in miles by comparing the total power (in Watt) of biking with the work produced by walking. However, keep in mind that the produced work depends on body mass, while the energy expenditure also depends on individual characteristics such exercise economy, oxygen consumption, etc.
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I am working on a project to assess the physical activity levels of adult population. I would like to know which questionnaire is better to use: IPAQ or GPAQ?
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At the international level, the International Physical Activity Questionnaire (IPAQ) was developed as a comparable tool between countries and was designed as a measure of their own report on Settings and physical activity. Several studies have been conducted to investigate the reliability and validity and it has been found to be reasonable. There are two questionnaires that researchers can use: long and short. The long version collects information on the area. House activities, household activities (including backyard jobs), transportation and leisure activities. Occupational domain names may be omitted for those who have no paid or unpaid work, except retired persons or their home. The survey also has additional questions about resident activity.
GPAQ is different from IPAQ in two basic ways. First, business and household activities occur in the workplace, while the IPAQ is presented as separate areas of the GPAQ domain name. Second, while GPAQ focuses on 'a typical week' physical activity, IPAQ emphasizes' PA recall within the last 7 days. In addition, while GPAQ includes "walking" in moderate intensity activity, IPAQ considers separate walking. Both GPAQ and IPAQ give metabolic equivalent (MET) scores; Within a week, the amount of calories consumed by the subject has been translated.
Hello there
I will give you a proposal. We can work together. I can make application and comparison in Turkey. You GPAQ I can evaluate IPAQ applications together.
Best Regard
Assistant Professor Nevzat DEMİRCİ
School of Physical Education and Sports, Mersin University, Turkey
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I'm looking for any information about phisical activity (which type of sport or PA) and the procedure to test the physical capacity (aerobic, anaerobic, strenght, balance, flexibility, etc...) in this group.
Our team already follow different typology of cognitive disability (Down Syndrome and so on), but we never follow autistic person.
In order to start any project I'm asking for previous experience or study about PA (physical activity), sports and testing in this syndrome..
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There are quite a few studies which have explored the dimension of physical activity in autism spectrum disorders. There are studies that have explored the differences in physical activity of children with ASD and the typically developed. A few studies have explored the concept of physical activity in terms of intervention. I have attached a few links that may help.
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Hello,
Nowadays, it is not possible to directly examine the structural changes at the brain cell level (e.g., neurogenesis). Thus, it is still unclear the actual effects of physical exercise on brain derived neurotrophic factors release (BDNF). However, the scientific technological progress has allowed to indirectly study the brain structures and changes at a more macroscopic level.
In order to study the relationship between exercise and BDNF changes in children/adolescent population, what are the main feasible, non-invasive methods? 
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Please check out the following review article:
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LIDO WorkSet is used in Human Factors lab to evaluate the work capacity of individuals engaged in various physical activities; for e.g. to assess isometric strength measurement (isometric grip strength, torsional strength etc.) and the level of effort required for specific work tasks.
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I imagine isometric is the goo method
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Background:
I wanted to do a longitudinal survey over (3 time points) to measure fatigue levels and some correlates on a group of patients.
I know our patient numbers based on the database. When I did an estimate of eligible patients based on diagnosis and age, we have 194 eligible patients.
From similar studies, 80% of patients are eligible for the study and an estimated 40% attrition rate during the longitudinal measures. We are not aiming to power any specific endpoints as there are still a lot of unknown wit regards to the thing we are measuring. Based on this my questions are:
1. Are the information presented enough to estimate the sample size I need?
2. If so, can you signpost or enlighten me on how to best estimate the needed sample size?
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Hussin, thank you for this. I would like to use in as an example in a course..
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How can I record the central relative timing of the components of the dart throwing?
We are going to analysis the EEG signal of dart throwing to components of throwing so that measuring the central relative timing and investigating the validation of the stability of the relative timing of GMP (about the schema theory, Schmidt, 1975, 2003).
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Hello,
In stable position like in chess playing the EEG record may be quite good. Problem starts when you try to record EEG while moving. We used to try to record EEG during simple movement: squat, staying in squad position, flexing in elbow. Unfortunately the record was completely unreadable. The signal was full of artifacts. 
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We are validating a cognitive reserve measure (in eldery over 65) and want to include a measure of physical activity throughout life. We'd need a paper-and-pencil, self-administrative measure. Is there a possible recommendation/consensus in the field? Lykert type scale would be most suitable, but calculating a measure based on active hrs per week or similar, is also fine.
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Dear Andrea,
The Physical Activity Resource Center for Public Health (PARC-PH) has a very good “Physical Activity Self-Report Measures Search” tool: http://www.parcph.org/subjSearch.aspx
Maybe the following papers will help you...
Forsén L, Loland NW, Vuillemin A, Chinapaw MJ, van Poppel MN, Mokkink LB, van Mechelen W, Terwee CB. Self-administered physical activity questionnaires for the elderly: a systematic review of measurement properties. Sports Med. 2010;40(7):601-23.
Eckert KG, Lange MA. Comparison of physical activity questionnaires for the elderly with the International Classification of Functioning, Disability and Health (ICF)--an analysis of content. BMC Public Health. 2015;15:249. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4392753/pdf/12889_2015_Article_1562.pdf
Littman AJ, White E, Kristal AR, Patterson RE, Satia-Abouta J, Potter JD. Assessment of a one-page questionnaire on long-term recreational physical activity. Epidemiology. 2004;15(1):105-13. http://journals.lww.com/epidem/Fulltext/2004/01000/Assessment_of_a_One_Page_Questionnaire_on.17.aspx
Best wishes from Germany,
Martin
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Helo,
I would like to buy portable, hand-held urine analyer - especially to have good values of urine osmolality, gravity (hydration status) of the sport athletes
Any recommendation or advice? Some good analyzrs which are enable to publish in peer- reviewed journals
thanks
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I use this one from Contec Medical when on Mission trips.  It has worked great for me. BC401 Urine Analyzer is a high-precision, intellectual instrument which is researched and developed basing on modern optics, electronics, computer science and other advanced technologies for clinical inspection of urine. GLU, BIL, SG, KET, BLD, PRO, URO, NIT, LEU, VC, PH, MAL, CR and UCA in urine can be tested by using it with special test strips. And it is applicable for use in hospital, community health service, clinic, epidemic station and family, etc.