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The feasibility of measuring joint angular velocity with a gyro-sensor
Takeshi Arai1, Shuichi Obuchi, Yoshitaka Shiba
1Department for Prevention of Dependence on Long-term Care, Tokyo Metropolitan Institute of Gerontology, Itabashi-ku, Tokyo Met, Japan. arait@tmig.or.jp
Archives of Physical Medicine and Rehabilitation
|January 1, 2008
Summary
Gyro-sensor ankle angular velocity measurement is reliable and correlates with muscle strength and physical function. This technology offers a feasible way to assess performance in both young adults and older individuals.
Area of Science:
- Biomechanics
- Kinesiology
- Gerontology
Background:
- Assessing joint angular velocity is crucial for understanding movement and physical function.
- Gyro-sensors offer a portable and potentially reliable method for capturing kinematic data.
Purpose of the Study:
- To evaluate the reliability of ankle joint angular velocity measurement using a gyro-sensor.
- To investigate the relationship between ankle angular velocity and physical performance in healthy young adults and community-dwelling older adults.
Main Methods:
- A cross-sectional study involving 20 healthy young adults and 113 older adults.
- Maximal ankle joint velocity was measured using a gyro-sensor during heel-rising and jumping.
- Intraclass correlation coefficients (ICC) assessed intertester and intratester reliability; Pearson correlation coefficients examined relationships with strength, power, and functional performance.
Main Results:
- Gyro-sensor measurement demonstrated high intertester (ICC=0.96) and intratester (ICC=0.96) reliability.
- Ankle angular velocity showed significant correlations with muscle strength (r=0.62-0.68) and power (r=0.45-0.79).
- In older adults, mobility functions significantly correlated with ankle plantarflexion angular velocity.
Conclusions:
- Gyro-sensor-based ankle angular velocity measurement is a reliable and feasible tool.
- The measured angular velocity is significantly correlated with muscle power and functional performance metrics.
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