Study of Balance Reactions in a Virtual Environment Compared to a Real Environment

Study Overview
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Brief Summary
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Validate a virtual environment by demonstrating a non modification of the characteristics of postural reaction and displacement of the body's center of pressure between a real environment and the same environment in immersive virtual reality.

Official Title
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Study of Balance Reactions in a Virtual Environment Compared to a Real Environment

Conditions
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Healthy

Intervention / Treatment
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* Other: static balance
* Other: dynamic balance


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Healthy volunteer, men and women over 18 years old Exclusion Criteria: Severe visual disorders which couldn't enable immersive virtual reality experience Immobilisation of one of the upper limbs (restraint splint) Orthopedic problems and pain in the lower limb MSSQ upper than 25 Pregnant women Person under legal protection

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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Design Details

Primary Purpose: Screening
Allocation: Randomized
Intervention Model: Crossover Assignment
Interventional Model Description: Prospective, multicenter, controlled, randomized, intervention study with minimal risks and constraints (RIPH2) on healthy volunteers.
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: virtual environment<br>Balance test in virtual environment with a virtual reality software executed in a 6DOF Occulus Quest helmet and a motion capture software with a Kinect Azure DK camera. | Other: static balance<br>* 30-second right and left unipodal static balance test<br>Other: dynamic balance<br>* for the unipodal dynamic balance test, 4 movements will be done by the volunteers in this order : 180° elevation of the arms lowering of the arms on the side of the single-legged support to the horizontal position 180° horizontal translation of the arms return from the horizontal to the starting point<br>|
| Active Comparator: reel environment<br>Balance test in real environment with a motion capture software and a Kinect Azure DK camera. | Other: static balance<br>* 30-second right and left unipodal static balance test<br>Other: dynamic balance<br>* for the unipodal dynamic balance test, 4 movements will be done by the volunteers in this order : 180° elevation of the arms lowering of the arms on the side of the single-legged support to the horizontal position 180° horizontal translation of the arms return from the horizontal to the starting point<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Area of CoP (Center of pression) | Mesure of area of center of pression during the balance tests in virtual condition and real condition, order in terms of randomisation | Immediately after inclusion | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Total distance covered by the CoP during the balance test (in mm) | Mesure of the total distance covered by the CoP during the balance tests (in mm) in virtual condition and real condition, order in terms of randomisation | Immediately after inclusion | 
| Simulator Sickness Quantifying (SSQ) | SSQ completed after the balance test, SSQ is a scale of cyber sickness, from 0 to 48. | Immediately after the balance test |