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KMID : 0357220150270060386
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Journal of Korean Society Physical Therapy
2015 Volume.27 No. 6 p.386 ~ p.391
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Study on the Correlation Between the Imbalance of Muscle Strength and the Score of EMG-Biofeedback Game at Ankle Joint in Healthy Adults
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Ko Yu-Min
Park Seol
Lim Chang-Hun
Lee Woo-Jin
Park Ji-Won
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Abstract
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Purpose: This study investigated whether the strength imbalance between two muscles can affect the score of EMG based biofeedback game, and whether the EMG based biofeedback game score can be used as predictable indicator of the degree of muscle balance alternating the conventional strength measuring equipment.
Methods: 40 participated in this study. Biodex was used to measure the peak torque/weight in order to calculate the muscle strength balance index between plantar flexor and dorsiflexor of ankle joint. And muscle balance index (MBI) was calculated. The EMG biofeedback game scores of dorsiflexor and plantar flexor were acquired, so that the EMG electrodes were attached at tibialis anterior and gastrocnemius. The relationship between the game score and the muscle balance index were analyzed.
Results: There was negative correlation between the muscle balance index between plantar flexor and dorsiflexor and the peak torque/weight of plantar flexor (r=-0.70). And there was negative correlation between the muscle balance index between plantar flexor and dorsiflexor and the game score of plantar flexor (r=-0.83).
Conclusion: The EMG biofeedback game score had significant relationship with muscle imbalance at ankle joint, so it seems that the game score can be used for predicting the degree of muscle imbalance as a parameter.
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KEYWORD
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Electromyography, Games, Muscle strength
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