A Study to Validate Treadmill Parameters

Study Overview
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Brief Summary
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The purpose of this study is to evaluate the accuracy with which a microprocessor-controlled treadmill delivers controlled postural disturbances.

Official Title
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Validation of Treadmill Disturbance Parameters

Conditions
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Healthy

Intervention / Treatment
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* Device: Treadmetrix


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Healthy adults with no medical conditions or previous injuries, trauma, or surgeries that reduce your balance, mobility or strength. Able to follow simple directions. Willingness to participate in the study. No restriction will be placed on gender, race, or ethnicity. Exclusion Criteria: Current or chronic pain in your shoulders, elbows, hips, knees, ankles, feet, neck or back. Use of assistive device such as walker or cane.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 45 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: Other
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Balance assessment on specialized treadmill<br>Subjects will undergo a balance assessment on a microprocessor-controlled treadmill | Device: Treadmetrix<br>* Programmable treadmill that delivers controlled postural disturbances<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Estimate the limits of agreement between observed and commanded treadmill belt disturbance parameters: belt displacement. | Treadmill belt displacement (m) will be measured with a Motion Capture system for each perturbation trial and compared to the commanded magnitude to assess system accuracy. | Duration of participant test session (approximately 2 hours) | 
| Estimate the limits of agreement between observed and commanded treadmill belt disturbance parameters: peak velocity. | Treadmill belt peak velocity (m/s) will be measured with a Motion Capture system for each perturbation trial and compared to the commanded magnitude to assess system accuracy. | Duration of participant test session (approximately 2 hours) | 
| Estimate the limits of agreement between observed and commanded treadmill belt disturbance parameters: average initial acceleration. | Treadmill belt average initial acceleration (m/s/s) will be measured with a Motion Capture system for each perturbation trial and compared to the commanded magnitude to assess system accuracy. | Duration of participant test session (approximately 2 hours) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Kinetic loading exerted on treadmill during perturbations: treadmill force. | Treadmill force (N) time series will be measured with force plates imbedded in the treadmill deck and recorded for each perturbation trial to assess the mechanical loading condition on the machine. | Duration of participant test session (approximately 2 hours) |