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KMID : 1035420180060010075
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Journal of The Korean Society of Integrative Medicine
2018 Volume.6 No. 1 p.75 ~ p.81
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Comparison of Bimanual and Unimanual Movements on Muscle Activity in Healthy Adults
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Kim Tae-Hoon
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Abstract
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Purpose : The aim of this study was to compare the muscle activities of thumb and wrist during unimanual, bimanual symmetric and bimanual reciprocal movements using surface electromyography.
Method : Thirty-six participants were involved in this study. Two 2.5×2.5×2.5 cm blocks were used to perform unimanual, bimanual symmetric and bimanual reciprocal movements of thumb and wrist. Muscle activities in the flexor pollicis brevis, abductor pollicis brevis, extensor carpi radialis and flexor carpi radialis were measured using an 2EM Bluetooth EMG system(ReLive, Gimhae, Korea).
Result : For the flexor pollicis brevis and abductor pollicis brevis, significant difference in the muscle activity were found among the unimanual, bimanual symmetric and bimanual reciprocal movement. For the extensor carpi radialis and flexor carpi radialis, the unimanual movement significantly different from the bimanual symmetric and reciprocal movements.
Conclusion : Both the thumb and wrist, bimanual symmetric and reciprocal movements were more efficient than the unimanual movement. Moreover, with regard to the thumb, the bimanual reciprocal movement was more efficient than the bimanual symmetric movement.
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KEYWORD
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unimanual, bimanual, symmetric, reciprocal, surface electromyography
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