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Managing Vibration Training Safety by Using Knee Flexion Angle and Rating Perceived Exertion
Long-Ren Chuang1, Wen-Wen Yang2, Po-Ling Chang1
1Department of Combat Sports and Chinese Martial Arts, Chinese Culture University, Taipei 11114, Taiwan.
Sensors (Basel, Switzerland)
|February 10, 2021
Summary
Whole-body vibration (WBV) exercise is safer at a 110-degree knee flexion angle, reducing head vibration and perceived exertion. This angle minimizes vibration transmissibility, enhancing safety during rehabilitation and exercise.
Area of Science:
- Biomechanics
- Human Physiology
- Exercise Science
Background:
- Whole-body vibration (WBV) is widely used in exercise and rehabilitation.
- Safety concerns and optimal parameters for WBV application require further investigation.
- Vibration transmissibility and perceived exertion are key factors in WBV safety.
Purpose of the Study:
- To examine how different knee flexion angles affect vibration transmissibility to the head and knee during WBV.
- To assess the Rating of Perceived Exertion (RPE) at various knee flexion angles during WBV.
- To determine the relationship between head transmissibility and RPE during WBV.
Main Methods:
- Sixteen participants performed static squats at knee flexion angles of 90, 110, 130, and 150 degrees on a WBV platform.
- Accelerometers measured vibration transmissibility from the platform to the head and knee.
- RPE was recorded during each WBV exposure.
Main Results:
- A knee flexion angle of 110 degrees resulted in the lowest platform-to-head transmissibility and RPE (p < 0.01).
- A significant positive correlation was found between RPE and platform-to-head transmissibility.
- Knee and head transmissibility varied significantly with different knee flexion angles.
Conclusions:
- A knee flexion angle of approximately 110 degrees is optimal for minimizing vibration transmissibility to the head during WBV.
- RPE can serve as a reliable indicator of the vibrational impact on the head during WBV exercises.
- Optimizing knee flexion angles can enhance the safety and effectiveness of WBV interventions.
