Physical Therapy Korea (한국전문물리치료학회지)
- Volume 11 Issue 3
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- Pages.43-50
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- 2004
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- 1225-8962(pISSN)
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- 2287-982X(eISSN)
Effects of the Width in the Base of Support on Trunk and Lower Extremity Muscle Activation During Upper Extremity Exercise
상지운동 동안 기저면의 넓이 변화가 체간과 하지의 근 활성도에 미치는 영향
- Yun, Hye-Seon (Dept. of Physical Therapy, Dae Han Hospital) ;
- Choi, Houng-Sik (Dept. of Physical Therapy, Hanseo University) ;
- Kim, Tack-Hoon (Dept. of Physical Therapy, Hanseo University) ;
- Cynn, Heon-Seock (Dept. of Physical Therapy, Hanseo University) ;
- Lee, Kang-Sung (Dept. of Prosthetics and Orthotics, Hanseo University)
- 윤혜선 (대한병원 물리치료실) ;
- 최흥식 (한서대학교 물리치료학과) ;
- 김택훈 (한서대학교 물리치료학과) ;
- 신헌석 (한서대학교 물리치료학과) ;
- 이강성 (한서대학교 의료보장구학과)
- Published : 2004.09.17
Abstract
This study was designed to determine the effects of different widths in the base of support (BOS) on trunk and lower extremity muscle activation during upper extremity exercise. Twenty-seven healthy male subjects volunteered for this study. Exercises were performed for a total of 10 trials with a load of 10 repetitions maximum (10 RM) for each of the various widths of BOS (10 cm, 32 cm, 45 cm). The width of a BOS is the distance between each medial malleoli when a subject was in a comfortable standing position. Electromyography was used to determine muscle activation. Surface bipolar electrodes were applied over the tibialis anterior, medial gastrocnemius, biceps femoris, rectus femoris, gluteus maximus, upper rectus abdominis, and elector spinae muscle. Electromyographic (EMG) root mean square (RMS) signal intensity was normalized to 5 seconds of EMG obtained with a maximal voluntary isometric contraction (MVIC). The data were analyzed by atwo-factor analysis of variance (ANOVA) with repeated-measures (