Optimization of Movement Patterns in Elite Volleyball Players

Study Overview
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Brief Summary
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On the basis of clinical and movement analysis records players are informed on what parameters can be optimized in order to improve their performance and avoid injuries

Official Title
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Optimaliseren Van Lichaams- en Bewegingsspecifieke Kenmerken Bij Volleybalspelers Met Het Oog op Het Reduceren Van Blessures

Conditions
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Optimisation of Performance and Avoidance of Injury

Intervention / Treatment
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* Other: advise for exercices given by team staff


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Members of national volleyball team signing informed consent Exclusion Criteria: No specific exclusion criteria

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| female players<br>national team players | Other: advise for exercices given by team staff<br>* To respond to questions asked: it is not the investigator who decides on the intervention, but the daily team staff (e.g. trainer, coach, PT,.....). So no predetermined intervention is provided<br>|
| male players<br>national team players | Other: advise for exercices given by team staff<br>* To respond to questions asked: it is not the investigator who decides on the intervention, but the daily team staff (e.g. trainer, coach, PT,.....). So no predetermined intervention is provided<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| 2D and 3D joint angles of different movements together with kinetics | kinematics and kinetics with regard to gait, running, jumping and arm movements. This means for example joint angles (measured by 3D motion analyses data, 2D measurement data) and kinetics (joint moments, pressure plate measurements) Time frames: these data will recorded by one measurement session. For information of clinicaltrials.gov (also other outcome measures): at this point it really is an observational study. It is a kind of service project for an elite athletes team. Advice is provided, but not as is meant within a real clinical trial. It might evolve to such a project, but at this state it is not the case. | 1 day | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| muscle strength | isokinetic measurements (expressed in Nm) | 1 day | 
| muscle strength | isokinetic measurements (ratio agonist/antagonist as for example ratio between knee flexors/extensors) Time frames: these data will be recorded during one measurement session. This is during same session as for primary outcome measure. | 1 day | 
| joint stability | nominal scale (good, poor) | 1 day | 
| joint control | nominal scale (good, poor) | 1 day | 
| prevalence injury past | interview (frequency/percentage of occurrence) | 1 day | 
| prevalence injury present | interview (yes/no) | 1 day | 
| (segmental) length | Meter | 1 day | 
| weight | Kg | 1 day | 
| Body mass index | Kg/m² | 1 day |