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Completed

NCT Number: NCT05333263

A Study to Validate Treadmill Parameters

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

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Key information

Conditions

Healthy

Age range

18 year–45 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Mayo Clinic Rochester

Rochester, Minnesota, 55905, United States

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

Treadmetrix

Device

Programmable treadmill that delivers controlled postural disturbances

Primary outcomes

  1. Estimate the Limits of Agreement Between Observed and Commanded Treadmill Belt Disturbance Parameters: Belt Displacement.

    Time frame: Duration of participant test session (approximately 2 hours)

    Treadmill belt displacement (cm) will be measured with a Motion Capture system for each perturbation trial and compared to the commanded magnitude to assess system accuracy. Mean observed treadmill belt displacement, in centimeters, relative to commended treadmill belt displacement was calculated and the mean relative error (percentage) was reported. Percent Error = (Commanded Kinematic Value - Observed Kinematic Value)/Commanded Kinematic Value *100%. The mean value is then determined from the individual errors for each participant. This results in Mean Relative Error. Lower numbers are considered a better outcome (less error). A negative percentage indicates that the observed value is larger than the command value.

  2. Estimate the Limits of Agreement Between Observed and Commanded Treadmill Belt Disturbance Parameters: Peak Velocity.

    Time frame: Duration of participant test session (approximately 2 hours)

    Treadmill belt peak velocity (cm/s) will be measured with a Motion Capture system for each perturbation trial and compared to the commanded magnitude to assess system accuracy. Mean observed treadmill belt peak velocity, in centimeters/second, relative to commended treadmill belt peak velocity was calculated and the mean relative error (percentage) was reported. Percent Error = (Commanded Kinematic Value - Observed Kinematic Value)/Commanded Kinematic Value *100%. The mean value is then determined from the individual errors for each participant. This results in Mean Relative Error. Lower numbers are considered a better outcome (less error). A negative percentage indicates that the observed value is larger than the command value.

  3. Estimate the Limits of Agreement Between Observed and Commanded Treadmill Belt Disturbance Parameters: Average Initial Acceleration.

    Time frame: Duration of participant test session (approximately 2 hours)

    Treadmill belt average initial acceleration (cm/s/s) will be measured with a Motion Capture system for each perturbation trial and compared to the commanded magnitude to assess system accuracy. Mean observed treadmill belt average initial acceleration, in centimeters/second/second, relative to commended treadmill belt average initial acceleration was calculated and the mean relative error (percentage) was reported. Percent Error = (Commanded Kinematic Value - Observed Kinematic Value)/Commanded Kinematic Value *100%. The mean value is then determined from the individual errors for each participant. This results in Mean Relative Error. Lower numbers are considered a better outcome (less error). A negative percentage indicates that the observed value is larger than the command value.

Sponsors and collaborators

Lead sponsor

Mayo Clinic

Other

Registry information

Official study title

Validation of Treadmill Disturbance Parameters

Important dates

Study start
2022
Primary completion
2024
Study completion
2024
First posted
Apr 18, 2022
Registry last updated
Dec 23, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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