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Sport Biomechanics - Science topic
Explore the latest questions and answers in Sport Biomechanics, and find Sport Biomechanics experts.
Questions related to Sport Biomechanics
We are seeking to develop our agile biomechanics lab for the purpose of in-the-field biomechanical data capturing, where the access to a portable instrumented treadmill [fitted with force plate(s)] would be a privilege.
I really appreciate if anybody introduces the ISI-indexed Journals in the field of Sports Sciences consider Case-study Research (Even multi-disciplinary journals) . More specifically, I am looking for the ISI journals which accept and review the case study articles in the field of sports biomechanics.
I'm looking for an algorithm to help automatically track soccer ball in a controlled field experiment (cameras positioned near to the ball) and output its time-series 2-dimensional coordinates. While we have found very efficient methods to do this in human movement features (e.g. OpenPose), we are experiencing some difficulties to found similar methods to detect/track other objects (e.g. ball). If you have some positive experiences with a given method, please let me known. Thanks in advance. Luiz H Palucci Vieira.
Due to the effects of COVID-19, staff and students around the world are transitioning to online learning.
ISBS are supporting a concept in which every sports science student can be provided with access to expert guest lectures on a range of sports biomechanics topics. These can be watched live or integrated into any teaching and learning environment.
The first of these lectures is now scheduled for this Friday 27th March at 11 am GMT (more details in the image attached).
This will be on ‘Biomechanics and Sports Injury Prevention’ by Dr Alasdair Dempsey from Murdoch University in Australia.
Staff and students can view live using the following link: https://us04web.zoom.us/j/3277636669
Please share these details with colleagues and students so that as many people as possible can benefit.
Many thanks, and best wishes,
I've recently been given some running data ranging from 400-3200m time trials. Is it possible to calculate anaerobic distance capacity from these and if so, how would you go about it?
Have you, or anybody you can recommend, published applied biomechanics research conducted at least in part as an undergraduate?
If so, please get in touch or recommend others.
I'm asking for 5 mins to complete a survey on your experiences to help others.
I'll get in touch with the survey link (not posting publicly to ensure genuine responses / inclusion criteria are met).
I am biased as the innovator of The Inclined Posture.
I am looking to develop and support research to answer these questions as not much exists.
Which role takes the skin temperature and skin moisture level between skin and clothing layer in, in terms of performance level output?
I measured and evaluated skin temperature and skin moisture level during cycling with different cycling clothing setups on different participants. Since sweating is an individual property of each athlete, I'm trying to find a calculation or statements on which microclimate (between clothing and skin) is best fitted for the energy output of an individual athlete under specific environmental conditions.
Experiencing an injury in any sport is impossible to avoid, but it has been found new ways that may be able to reduce the amount of occurrences. The studies are led by analyzing biomechanics, which is designed to simplify the way we understand the motion of the human body. Biomechanics has been found highly effective in preventing injuries ,but how?
I have found that when doing isometric MVCs prior to golf swing data, that the swing data tends to be higher that the MVCs i.e. Swing produces 120% of MVC or similar. If this is the case is more benefical to use within testing maximums instead of pre-testing isometric MVCs.
Can someone help me to find 10 RM testing protocols for basketball and Netball female players?especially, back squat and bench press?
I am Gabriel Delgado, from Granada (south of Spain). I am doing my phD about tennis. I am studying the segment movement sequence using three gyroscopes: one on the trunk, one on the arm and one on the wrist. They record at 128 HZ and the limit of the gyroscope is of 2000 degrees per second. The are firmly attached to the segment with straps and weight 24 grames... I have studied Spot Sciences but I know something about signal processing. But it isn´t enough to achive my objetive... I am detecting peaks using OriginLab software. Before I was doing with Excel (semimanually). I have also try Matlab . I think learning how to use this software is more complicated than using OriginLab (it implement manual peak detection). With OriginLab is faster... I would like to filter the signal to obtain peak values, peak moment aparition, peak integral and other interesting variables (signal assymetry, slope, etc).
In OriginLab there are lot of filter. I have think about three: -Moving average. - Savitzky-Golay. I didn´t knew about this filter but when I use it the signal don´t change to much and it maintain local peaks and signal width... - Clasicc butterwooth filter.
I record series of 20 strokes. The duration of one serie is about one minute. Each player perform 13 series so I have lots of strokes to analyze. I have analyzed 40 players.
What do you recommend me?
Thanks very much,
Hypotherappy is one of the treatments for various diseases. how it treat Hyperactivity Disorder?
We need to know if there are any tool to assess in-vivo the resistance offered by subcuteneous fat to the pressure exerted by a probe which aims to cause a deformation in the muscular belly (mechanomyography).
Actually i am going to collect data from human beings for different arm postures. What i came across about validation of MMG signal is to see the amplitude (RMS) and frequency (MPF) of the signal.
Now i want to develop a program in labview software to check the validity of data immediately after recording of data.what are the essentials for this? I mean what should be the values of RMS and MPF to validate signal as MMG signal for isometric contractions?
With changing pedaling technique, or with forced supramax training, or mental training, or changing seat position, etc.?
What are the reasons of knee cracking in young people who do not suffer from any symptoms? In particular, cracking that comes with normal activities.
Is this normal for such type of knee cracking? Should we treat this issue?
Any suggested article that explain this issue would be appreciated!
Field of my interest is systemic physiological response to maximal cycling and running incremental test, comparison this results and practical application for functional diagnostic.
I have a set of EMG data from incremental pedaling from the quadriceps muscles. I need to predict the muscle fatigue from the analyses of EMG data. I could not find a change in parameters like median frequency or Zero crossing to identify fatigue threshold. I believe these are usual in Isometric contractions.
I have a pt who is approaching 12 weeks post-op Achilles tendon repair and is having difficulty getting a SL HR without UE assistance. I would like to initiate plyometrics with this pt. I will mostly modify the task from seated to angled standing to upright standing overtime. Has anyone followed this progression or used SL HR as a stop-light progression to plyometrics?
Someone maybe have some article or formula to make torque gravity correction for the limb weight?? I want to make this for valid H/Q (hamstring-to-quadriceps) ratio during isokinetic torque measurements.
We are doing a study on cutting maneuver in national squash players using kistelr force platform with 1000 Hz sampling rate. They are asked to do reactive agility task similar to work with young soccer players in the following paper: "Effect of Anticipation on Lower Extremity Biomechanics During Side- and Cross Cutting Maneuvers in Young Soccer Players.2014" something raises our question when we were comparing our result to the findings reported in the attached file. as you see, the parameter Time to Peak Force in both Fz and fx seems too long (more than 0.5 second or above 500 ms) for a cutting task, in both anticipated and unanticipated conditions. based on our result the whole contact time during sidestep were less than 300 ms. I mean the time reported is too slow. Would you please explain about it?
Tennis is a sport where athletes generate alot of explosive movements with the dominant side of their bodies so i would like to know a way to calculate how much difference of strenght exists between both sides of their body.
What influence of static stretching on performance of soccer players?
What are the recommended frequencies (Hz) for a high and low frequency stimulation of the biceps brachii for monitoring peripheral fatigue?References?
I am currently familiar with high 80Hz/ low 20Hz and high 50Hz/low 10Hz frequencies. What is recommended for the biceps brachii?
I'm working on a project to measure voluntary activation in the elbow flexors. It seems a lot of people use aluminum foil to make electrodes. Wondering if anyone has a recommendation on self adhesive electrodes?
Is there any good evidence for injury reduction or any other benefit to forefoot running compared to heel striking? Or even better is there any evidence in natural heel strikers that have been trained to forefoot run?
As you may know, the IMU (inertial magnetic unit) based motion capture (wearable motion capture system) is a recently developed system to track human motion and its application is evolving.
I am trying to understand the possibility of their application in a skating and skiing sports as well as its limitations.
However, I am still confusing why these motion capture systems need additional GPS or DGPS or LPS (local positioning sensor) when capturing skiing, skating, and skateboarding as sliding motions.
there are many papers explains the theories, though I need to understand the fundamental concept as simply as possible.
Please share your knowledge experience. Any information can be helpful for me.
To study the race walking athletic discipline, I need a wearable system to measure spatial (step length) and temporal (contact time, flight time and step rate) variables in field conditions. The system must be able to compare left vs right legs, and also to show the mean values of both legs.
I've been reading through the literature to create a biomechanical model of counterforce brace effects. Right now I'm working on the Jumper's Knee strap, and I'm not finding a lot of biomechanical evidence for symptom relief, only a lot of anecdotal clinical accounts. I was wondering if anyone has published a paper or read a study with more concrete evidence. This is a little different than the load/force redistribution effect of the tennis elbow counterforce strap...
I am looking for proficiency test provider for sport biomechanics laboratory equipment (Simi motion analysis system, Vertigo static and dynamic balance system, Bertec force platform, Myon EMG, IsoMed 2000-dynamometer.) or stander test at least for one device to do proficiency test for iso 17025 accreditation
What is the most critical biomechanical factor that makes USAIN BOLT indomitable?
Researchers have measured stiffness by different method
,spring-mass model, ultrasonography or perturbation methods,
why these methods don't give the same results(e.g. In relationship of stiffness and performance)?
I am trying to define the limit or threshold of the knee varus-valgus angle (rotational range) for normal subjects. please suggest good references for me.
It seems cadaveric studies, in vitro, are best.
Best regards: Tserenchimed.
I am working on the data processing of the data that have been generated from the accelerometer and gyroscope. I want to find the displacement from the raw data from the two sensors. I am using MPU-6050 as sensor module. Plz provide me the solution for the same or the guidance.
I want instead of using the training quiet eye, I use the method of exercise training.
Can you help me?
Or know the literature in this area?
Horse riding women make use of their high pelvic floor muscle strength to explain their fear for vaginal birth. Legend or truth?
Is it possible to extrapolating a missing marker in the end of its path with Vicon bodybuilder software? Does anyone know any other way?
I am looking for a broad,"If-Then" approach not necessarily computer modelling.
Me and my colleagues are planning a study to assess the power of kick of professional soccer players, but we are having difficulty to find a closest possible protocol of the real sport gesture.
I am interested in simulating a soccer match using the SAFT90 protocol. While reading the papers that have used it, I understood that an audio track is required. Can anyone address me to where I can find it?
Thanks in advance,
It is well known that in rigid body, there are 2 ways to representing rotations in 3D: Euler and Quaternion. Empirically, has been noted that both methods have advantages (In Euler there's not redundancy and Quaternions there are stable interpolations of possible rotations) and disadvantages (In Euler exists the gimbal lock singularity and Quaternions there are redundancy by using 4 values to represent the DOF or degrees of freedom). Nevertheless, i've not found a technical and measurement report about when is recommended use Quaternions vs Euler representation, e.g. (recording a complex sport gesture, or recording a simple movement gesture). Even, in the ISB (international society of biomechanics) recommendations on definitions of joint coordinate system of joints for human analysis, there's no given an explanation of using an Euler representation in human motion.
side deviations For line work Force leads to weakness in the Force while running and throwing during movement
In file data exported from 3D simi motion analysis system were found a values entitled (velocity (abs), acceleration (abs). What does it mean?. Which is the equation used for calculation?
I work at a sports specialist school in Melbourne, Australia and we would like to introduce a pre training neuromuscular fatigue protocol that would allow us to assess the students readiness to train.
Wondering if there's anything I need to know about getting data from them. My company is a FOTO client, and I see most of what I need from the dashboard. However, although their computer says the data is statistically significant, I need a little more than their word for publication. If you've done anything like this before, let me know and how it went. Thanks!
FOTO - Focus of Therapeutic Outcomes
Can anybody help me to understand internal and external generation of movements. Is internal means conscious or voluntary? or is external means is a reflex?
I am processing a trial in Vicon Nexus. I used plug-in gait and defined 16 markers (lower extremity). Now I want to add 2 unlabeled markers. These markers attached to an object. How can labeling these markers?
I need to a) know if its built-in hardware circuit network amplify the raw signal and b) if its built-in hardware circuit network convert the raw signal to an average root-mean-square (rms).
During stair up and down how much force is created at foot. And in which the force is more stair up or stair down............?
Is there any method or article is support to this......?
When performing measurement of the balance through the COP can try to estimate the location and the CoM shifts through different techniques. What is the best technique? What is the most reliable for analysis?
When changing the strike pattern from RFS to FFS, the plantarflexors will be more activated, but knee loading will be lower. How many % of the runners will keep the FFS and do not shift back to RFS?
I am going to study on visual cues, i need to remove some parts of the body in a video film. is there a software to do that?
Standing and sitting body posture?
What is best international organization for accreditation sport Biomechanics labs ?
I am a rugby player, I find difficulties when I want to side step my opponents and also I am not able to pass the ball in a particular space we my teammate can intercept the ball without slowing his movement.
Apart from their apparent difference -- the area of applications differ -- what may be the precise differences between clinical and general gait analysis? To which degree is one associated with another? What are the differences in the techniques involved and what are focussed in each?
I am aware that a stable and level base is required, does anyone have any ideas of methods to achieve this on a packed dirt surface?
Power and shelter are not an issue, it is the physical set up of the platform that we are looking for advice on.
Any insight or recommendations would be greatly appreciated.
In his paper Locatelli (1996) states that he used the stiffness test by Carmelo Bosco (1991). However there is no reference to Bosco's article in Locatelli's article.
Locatelli 1996, states that the protocol for measuring muscle stiffness consisted of 5 successive vertical jumps on the conductance mat, subjects were keeping their legs almost straight, bouncing on the balls of their feet and using their arms to help.
Locatelli E. (1996). The importance of anaerobic glycolysis and stiffness in the sprints (60, 100 and 200 metres). New Studies in Athletics: 11:2-3; 121-125.
I recently started working in a lab that uses Vicon Nexus 1.8.5 and wants to hook their Bertec force plates (type 4060-NC) into Vicon. Does anyone have any tips, suggestions, or resources for this process? Previously the force plates were run through a program called Motion Monitor. Any help would be greatly appreciated!
I am essentially looking for a way to monitor neural fatigue on a daily basis in a group of sprinters. I am already monitoring sleep, soreness, fatigue, RPE etc but most of these are subjective.
I have been told by a few people that a simple grip strength test could be a good alternative and Polequin has mentioned using it on his website but I'm unable to track down any research papers using it.
The answer may be trivial but I can´t find an answer anywhere. Are there any studys that indicate safety issues or experimented on higher BFR loads?
I've already read a research about the volume of short sprint trainings(acceleration and max speed). I do not know the title of the research but as I remember that was suggesting the total volume ~250m because after you pass this distance you begin to slow down. But I do not remember the details of this research.
Is there any research that you can share with me?
I want to acquire surface EMG signals from the bicep. For the electrode design, instead of using the button electrode patch(See attached link) I want to design electrodes made of Copper.The reason for using Copper is to fabricate microelectrodes. But I am not sure if the copper electrodes are the right fit.
Any suggestions or previous experiences are helpful. Thank you.
I am looking at an innovative way to present some data for a article I am currently writing. I have measured the impact point between a putter and golf ball using a mechanical putting robot, whereby stroke kinematics are standardised. Along with human participants where variation has occurred with stroke kinematics. To present the differences between the two I'd like to map them through a stereographic projection. I don't have access to MATLAB unfortunately so am looking for alternative methods to complete this if possible.
Some researches have defined the instant of ball release as " Ball release was defined as the first frame in which the basketball left the participant’s hand. ". However, as I hadn't any marker on the ball, I can't use from this definition.
Please let me know, how can I estimate the instant of ball release in basketball free throw by some variables such as elbow and wrist angels ( the peak of extension of elbow joint and or the peak of flexion of wrist joint)?
I'm looking forward to see your informative comments.
Comparing an isometric maximal voluntary contraction (IMVC) method with a torque-velocity test (T-V) that consists of a 10s sprint on the bicycle-ergometer:
- what are the specific advantages and weaknesses (functional/physiological)?
- which method would you recommend?
- do you consider any alternatives?
Thanks and BR,
In clinical setting we often prescribe core muscle strengthening for chronic low back pain or low back pain patients, because of the researches evolved there is a weakness of core muscles in this population, i just want to know is there is any standardized grading system is there to measure core muscle strength.
Studying elite baseball players and I understand the problems with the plug in gait model for issues including the location and reference of the glenohumeral joint centre, the definition of the anatomical coordinate system of the humerus, and the shoulder joint angle decomposition. Further, there appears no standardized model for throwing in research in this area, despite the ISB standards for upper limb modelling. Any help would be greatly appreciated!
Most data regarding sports accidents emanate from hospitals and rescuers. In France, it is somewhat difficult to get precise information as to these accidents. I would be interested in international data in order to compare the situation in France and in other countries...
Dear all, I want to know what is the relationship between muscle activity (output of EMG) and force production (output of force platform or analysis by inverse dynamic), and any reference indicated to this relationship.
There are many methods for measuring the spinal curves such as radiography (Cobb angle), flexible ruler (flexicurve), Spinal mouse, and etc. Also there are many publications about the validity and reliability of the measuring methods. However, it has been mentioned some negative points about using them. So, what is the best and safest method for spinal curves measuring, specially in person with spinal postural deformities?
I'm interested in this product by XSens for sports kinematics analysis, and I