Questions related to Body Composition
We have conducted a study to compare the effects of 3 training methods on body composition and cardiovascular risk factors. A Log 10 transformation was applied for all non-normal distributions, however, the reviewer suggested considering a more conservative test (the Bonferroni correction factor). If we apply the Benforrini correction (p/6), all significant changes become non-significant because the p-values are all close to 0.05. What to do?
I have a healthy control group (obese and non-obese) and patients with breast cancer. I am evaluating if protein intake values is an independent predictor for phase angle (body composition) results. It is not clear if I have to include all subjects or just the patient group in my regression analysis?
I appreciate your help.
In addition to above question i need more clarification on How body composition assessment aids in the management of CVD and how does Body composition assessment alter as a result of CVD?
I would like to predict Stiffness of composite porous material by understanding the stiffness of each particles .To do so, Is there any methods or software?
Can we eliminate BCAAs supplement from our daily nutrition plan? Please read the following article and subsequently participate in this discussion.
After a systematic review of validity of body composition techniques, I got several Bland-Altmans (from each study). I´d like to know if there is some manner where I can have a summary of these results (a meta-analysis) or I should only describe them. Thank you for any help!
I am currently analyzing data and I am not sure of what would be the best function and script I should use in SAS. I am looking if there is a difference in body composition (BMI Z-score) between children with congenital heart diseases depending of the physical activity restrictions they have. These restrictions can be imposed by the doctor (MDany), the parents (PAany) or both (Bothany).
Thank you !
Please don't answer, if you don't reference your answer!
Please also, don't answer if you just have NPK! I already found lots listing N:P:K
Please don't answer if you don't read the whole question!
I was having a discussion with one of my children yesterday and he told me about what he was being taught in class. His teacher is trying to prove that we are all made from stardust. After having a look at a few sites promoting the concept, I found a distinct lack of proof. Just lots of latest theory.
So I started thinking this all sounds like bullshit to me! Hey, I wonder what is in bullshit! I've googled for maybe an hour for the chemical or elemental composition of cow manure. Nowhere can I find information listing the Oxygen, Carbon, Hydrogen, Nitrogen, Calcium, Phosphorus, Potassium, Sulphur, Sodium, Chlorine, Magnesium percentages of fresh manure.
Can anyone humour me and point me to a document listing all of them (and more)?
Is any material available concerning equations for estimating total body water using BC545N- a segmental body composition monitor from TANITA?
We are looking for manuscripts measuring 4-compartment body composition in African-American and Hispanic-American youth and adults. What about other races/ethnicities outside of the United States?
We performed a systematic review and only identified about 175 articles across ALL races and ethnicities, and are surprised there aren't more. We are a little worried that we haven't found them all.
Can we get some help?
Your ability to lose, gain or maintain your weight is dependent on genetic, environmental, and behavioral factors. But how much of a role does genetics play in weight loss versus eating a healthy diet? Is there any truth to genetics playing a substantial role in your ability to lose weight to improve health and overall body composition? Or the exercise and diet is the driving factor?
Dear, the literature presents some studies validated for assessment of body composition of infants, considering that the lifetime in days is an important variable in the calculation (the main studies claim that the measures skinfolds children should be obtained up to 72 hours of birth). Is there a method or study that has done the measurement of the neonatal diposity, since children can have more than 72 hours of life? My protocol establishes that data collection will be between the third and the tenth day of life.
Thanks in advance!
Is there any studies related to relationship between core stability, body composition & performance?
I am trying to meta-analyse differences in Fat free mass, yet some studies measure via DXA, some use other methods. Is it more appropriate to use mean difference or standardised mean difference to analyse this effect?
I have seen meta-analyses that do both!
Dear Professor Messina,
I have read the idea of your scientific project. I am interested in differences between sports involved children and non-athlete children in terms of dietary habits and body composition. I have been using the questionnaire made by Polish authors and I utilize Tanita BC 545 N to assess body composition. I wonder if I could use the questionnaire used by you. Do you think we could start a co-ooperation in that matter?
With best regards,
Grzegorz Bielec, University of Warmia and Mazury, Olsztyn, Poland
How can I download or get BIA (Omron HBF-300, Tokyo, Japan) instruction and formulas for analyzing body fat percentage? Can we use it for obese women?
I´m working on an article investigating the optimal somatotype and body composition of triathletes. I´m searching for anthropometric characteristics of female and male triathletes competing in different distances and different skill levels
12 week exercise intervention using power training (20-50% 1RM) or whole body vibration. Complete 3x10 of 4 lower body exercises with 1-3 minutes rest.
Serum collection is early in the morning while fasted using red top vacutainers.
Participants will continue with regular physician care and any prescribed therapy.
All participants are >65 years and long-term care residents.
The presence of comorbidity is common among participants. Diseases range from T2DM, dementia, stroke, hypertension, Alzheimer disease, GERD, and osteoporosis.
Some participants are taking statins.
Near infrared reflectance analysis (NIKA) recently used to rapidly determine carcass composition of rainbow trout, another non-destructive and reliable means of estimating body composition in mamrnals , birds and fish is based on measurement of total body electrical conductivity (TOBEC).I need more detailed information.
Various techniques for measurement of body composition are commonly used in human performance laboratories. Some that are often seen are skinfold thickness measurements, BMI, bioelectrical impedance, DEXA, bod-pod etc.
What would be the best method/combination of methods for measuring body composition in athletes? Should there be a difference in methods used for high-intensity sports and low to moderate intensity sports and healthy non athletes?
What do you use in your lab and could you suggest some review on that topic or provide possible guidelines for that issue.
Thank you in advance,
From various studies and clinical experience, what effect has body composition on the outcome of knee osteoarthritis management/interventions?
I would like to know if exists a specific methodology to analyse the CoM using 16 markers in the body. In this case, I used four cameras (CODA system) to measure the 3D position, with two markers located on the ear, and the others located on the left and right acromion, anterior superior iliac spine, knee, ankle, fifth metatarsal, elbow, and wrist joints (= 16 markers). What method of analysis I would can use in my research? What method is most indicate with 16 markers?
Numerous studies have been published on precision error for DXA measurements of body composition. Very few (if any) have applied precision error when interpreting longitudinal body comp change in athletes/sport science fields. Would be interested to hear opinions on application of LSC and precision error to mean group changes too- typically (in clinical practice) these are used on an individual basis
Most studies involving calorie restriction that I see involve removing ~500kCals or more from the diet of the subjects. However, body weight appears to be regulated by a homeostatic system(s). Making extreme perturbations to energy intake at any one instance may not have the same efficacy as making smaller changes overtime in attempt to reduce the adaptation or the rate of adaptation of these metabolic systems. I would appreciate any references you could provide to in regard to a scientific inquiry to find a minimum energy deficit that has yielded weight loss.
We recently acquired a tetrapolar bioimpedanciometry device and our results in terms os body composition percentuals differ a lot from our clinical perception. We understand that clinical perception is not the best way to evaluate body composition, but our results are so unexpected that we'd like to hear from the coleagues theirs experiences and difficulties in this kind of method, in hospitalized clinical ward patiens.
Body composition assessment from impedance was done through prediction models that assume the body to be a cylinder through which the current flows. Literature shows that prediction of whole body composition from the sum of individual segments is advantageous over whole body wrist to ankle impedance measurements. In such cases, the body is approximated into five conductors; right arm, left arm, trunk, right leg and left leg.
In above situation, as in most of literatures, whole body impedance were calculated from segmental impedance however the exact method used to calculate this is not mentioned. Can anyone elicit this ?
When comparing leptin levels between a larger and a smaller rodent of the same species and similar body composition, will the larger one have a higher serum leptin concentration due to absolutely higher fat mass, or will the concentration be the same, as fat mass relative to body mass is similar?
As l have understood, fat is the primary source of energy that the body uses when an individual is at rest. However, l have read that the moment there is an intake of carbohydrates, the body shift to this source of energy and stops using fat. Also, l read that in order to make the body use fat as the primary source of energy at rest, one should try to eat many times during the day (i.e. 5 or 6), and these meals and snacks should contain low glycemic index carbohydrates, proteins and vegetables or fruits. Apparently, by doing so a peak of insulin is avoided and the body continues using fat as primary source of energy. Can anybody explain how exactly this happen? Would this be a good strategy in order to change an athlete´s body composition (if we want to decrease fat levels while maintaining lean muscular mass)?
I am using Tinita body composition analyzer for my study. The devices can't be used for the children under 15 years of age. I don't want to go for a manual method.
The potential benefits of HIT for body composition are still under discussion. In practice, what is the best volume and the intensity for this type of training intensity?
I am searching for sources of information on anthropometric measures in order to make my project to graduate. The aim is to check if the bone structure is associated with increased fat mass.
My data shows an increase in pectoral, subscapular, suprailiac, triceps, biceps, midaxillar and sum of skinfold fat thicknesses (from 100 to 112) over the four-year period however there is a decrease in thigh (from 15.56 to 14.21) and calf (10.02 to 9.50) skinfold fat thicknesses over the four year period from 18 to 22 age.