대한인간공학회지 (Journal of the Ergonomics Society of Korea)

  • 제25권2호
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  • Pages.147-154
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  • 2006
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  • 1229-1684(pISSN)
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  • 2093-8462(eISSN)
대한인간공학회 (Ergonomics Society of Korea)
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어깨위로 들어올리기 작업시 의도적인 복근수축이 요부근 활성도와요추신전각도에 미치는 영향

Effects of Intentional Abdominal Muscle Contraction on Lumbar Muscle Activities andLumbar Extension During Lifting Above the Shoulders

  • 발행 : 2006.05.31
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초록

This study was conducted to evaluate the effect intentional contraction of abdominal muscles during lifting above shoulder on the muscles activities of the lower trunk and on the degree of lumbar extension. Fifteen healthy adult males were selected as test subjects. A 5kg weight was raised to the shoulder level, 20cm, and 40cm above the shoulder level. EMG activities of all muscles except the rectus abdominis were significantly greater when subjects were asked to contract their abdominal muscles intentionally during lifting(p<0.05). Degree of lumbar extension also significantly decreased with intentional abdominal contraction during the lifting. Also, degree of lumbar extension significantly increased with increase in lifting height(p<0.05). The results of this study show that intentional contraction of abdominal muscles during lifting above shoulder increases the EMG activities of external abdominis oblique, internal abdominis oblique, and erector spinae.

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참고문헌

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