Global Positioning Satellite and Accelerometry to Assess Human Locomotion (ACTI GPS)

Study Overview
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Brief Summary
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The aim of the study is to validate the association of the GPS and accelerometer tools in order to assess the humain locomotion during exercises. The hypotheses are: GPS and accelerometer together can assess the human locomotion GPS and accelerometer together can assess the energy expenditure during exercises

Detailed Description
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The assessment of the physical activity (PA) and the energy expenditure (EE) is very important to estimate the morbi-mortality. However, each of these tools has its advantages and disadvantages but none of them provides a measure of all components dimensions that characterize the associated PA and EE. The current scientific prospects for measurement of PA tend to associate several measuring devices. To date, these perspectives are facilitated by technological developments and miniaturization of various devices. Thus, the purpose of the study is to evaluate wether GPS associated with accelerometer are able to assess the humain locomotion and energy expenditure during exercises.

Official Title
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Assessment of Human Locomotion and Energy Expenditure Using Global Positioning Satellite and Accelerometry

Conditions
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Healthy Volunteers

Intervention / Treatment
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* Other: GPS and accelerometer recording (s) during exercises


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Older than 18 Informed consent of the participant Able to understand the protocol of the study Register to the social health insurance No exercise limitation Exclusion Criteria: No informed consent of the participant pregnant woman

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 |
| --- | --- |
| healthy subjects<br> | Other: GPS and accelerometer recording (s) during exercises<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Defining optimal analysis parameter to accurately detect walking from stopping periods | Predefined walking protocols will be recorded and the subjects asked to follow recorded procedures. Detection performance of walking and resting bouts (expressed by the percentage accuracy in the detection of walking and resting bouts actually performed) for: i) GPS alone; ii) Accelerometer alone; iii) both GPS and accelerometer | up to 1 week | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Defining optimal analysis parameter to accurately detect speed and distance of periods of walking | Predefined walking protocols will be recorded and the subjects asked to follow recorded procedures at a defined walking pace. Accuracy of speed and distance estimations (expressed by the typical error of estimate and the coefficient of variation) from: i) GPS alone; ii) Accelerometer alone; iii) both GPS and accelerometer. | up to 1 week |