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Published on: August 25, 2022
Trunk muscle activation patterns, lumbar compressive forces, and spine stability when using the bodyblade
Janice M Moreside1, Francisco J Vera-Garcia, Stuart M McGill
1Department of Kinesiology, University of Waterloo, Waterloo, Ontario, Canada.
Physical Therapy
|January 25, 2007
Summary
Using the Bodyblade can increase trunk muscle activation and lumbar forces. Proper technique is crucial for spine stability, as poor form may pose risks for individuals with certain back conditions.
Area of Science:
- Biomechanics
- Exercise Physiology
- Rehabilitation Science
Background:
- The Bodyblade is frequently utilized in physical medicine.
- Understanding its biomechanical effects is essential for safe clinical application.
Purpose of the Study:
- To analyze trunk muscle activation during Bodyblade use.
- To assess spine kinematics and lumbar forces.
- To evaluate the impact on lumbar spine stability.
Main Methods:
- 14 healthy male subjects participated.
- Surface electromyography recorded trunk and shoulder muscle activity.
- 3D lumbar spine sensor and video analysis quantified forces and stability.
Main Results:
- Vertical Bodyblade oscillation yielded high internal and external oblique muscle activation (48% and 26% MVC).
- Associated lumbar compressive forces reached up to 4,328 N.
- Spine stability improved with coordinated effort but decreased with poor technique.
Conclusions:
- Bodyblade usage can influence spine stability, potentially enhancing or compromising it.
- High lumbar compressive forces may be unsuitable for individuals with compression-intolerant spinal pathologies.
