건강한 성인의 Shaker 운동과 수정된 Shaker 운동 동안 목뿔위근, 목빗근, 전사각근, 머리널판근의 활성 차이 (Comparison of Activation of Suprahyoid, Sternocleidomastoid, Anterior Scalene, and Splenius Capitis Muscles during Shaker Exercise and Modified Shaker Exercise in Healthy Adults)

서지정보

· 발행기관 : 임상인체동작과학회
· 수록지 정보 : 임상인체동작과학회지 / 25권 / 2호 / 17 ~ 25페이지
· 저자명 : 유동완, 정혜지, 문종훈, 원영식

초록

Purpose The purpose of this study is to investigate the effects of Shaker exercise (SE) and modified Shaker exercise (MSE) on the activity of the suprahyoid (SH), Sternocleidomastoid (SCM), anterior scalene (AS), splenius capitis muscles (SC). In addition, we want to investigate whether there is a difference in muscle activity and fatigue during SE and MSE according to forward head posture (FHP). Methods Thirty nine healthy adults participated in this study. All subjects performed SE and MSE isometric exercise, and the exercise sequence was counterbalanced. SE and MSE measured the mean, maximum, and fatigue levels of SH, SCM, AS, and SC muscles using surface electromyography. All exercises were repeated 5 times and were performed isometrically for 20 seconds, with an interval of 30 seconds between exercises. A 20 minute break was provided between the two exercises. For reference voluntary contraction, 90˚ abduction was performed 3 times based on the middle deltoid muscle. The craniovertebral angle was measured to determine the FHP. Results SH and AS, SC muscles activation was significantly higher in MSE than in SE (p<.05). There was no significant difference in SCM muscle activity and fatigue between the two exercises. In SE, the group with FHP less than 50 degrees showed significantly lower activity in SH and SC muscles than the group with 50 degrees or more.
Conclusion These findings suggest that MSE can be used as a more effective method for enhancing SH muscles than conventional SE.

영어초록

Purpose The purpose of this study is to investigate the effects of Shaker exercise (SE) and modified Shaker exercise (MSE) on the activity of the suprahyoid (SH), Sternocleidomastoid (SCM), anterior scalene (AS), splenius capitis muscles (SC). In addition, we want to investigate whether there is a difference in muscle activity and fatigue during SE and MSE according to forward head posture (FHP). Methods Thirty nine healthy adults participated in this study. All subjects performed SE and MSE isometric exercise, and the exercise sequence was counterbalanced. SE and MSE measured the mean, maximum, and fatigue levels of SH, SCM, AS, and SC muscles using surface electromyography. All exercises were repeated 5 times and were performed isometrically for 20 seconds, with an interval of 30 seconds between exercises. A 20 minute break was provided between the two exercises. For reference voluntary contraction, 90˚ abduction was performed 3 times based on the middle deltoid muscle. The craniovertebral angle was measured to determine the FHP. Results SH and AS, SC muscles activation was significantly higher in MSE than in SE (p<.05). There was no significant difference in SCM muscle activity and fatigue between the two exercises. In SE, the group with FHP less than 50 degrees showed significantly lower activity in SH and SC muscles than the group with 50 degrees or more.
Conclusion These findings suggest that MSE can be used as a more effective method for enhancing SH muscles than conventional SE.

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