Physical Therapy Korea (한국전문물리치료학회지)

Korean Research Society of Physical Therapy (한국전문물리치료학회)
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The Effects of Straight Leg Raising Exercise and Quadriceps Setting Exercise on Electromyographic Activity of the Quadriceps Muscle

하지거상운동과 대퇴사두근 등척성운동시 대퇴사두근의 활동전위

  • Current, Marion E. (Dept. of Rehabilitation, College of Health Science, Yonsei University) ;
  • Yi, Chung-Hwi (Dept. of Rehabilitation, College of Health Science, Yonsei University) ;
  • Roh, Jung-Suk (Dept. of Rehabilitation, The Graduate School, Yonsei University)
  • 구애련 (연세대학교 보건과학대학 재활학과) ;
  • 이충휘 (연세대학교 보건과학대학 재활학과) ;
  • 노정석 (연세대학교 대학원 재활학과 물리치료전공)
  • Published : 1997.05.10
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Abstract

The purposes of this study were to compare the electromyographic activities from the rectus femoris, vastus medialis oblique portion, vastus medialis longitudinal portion, and vastus lateralis during straight leg raising (SLR) and quadriceps setting (QS) exercise and to determine which exercise is more effective to selectively strengthen the vastus medialis. Thirty two healthy subjects <19 men, 13 women) participated in the study. All participants performed SLR and QS exercises while electromyographic activity was recorded from EMG surface electrodes. Statistical analysis demonstrated significantly greater values for the vastus medialis oblique portion, vastus medialis longitudinal portion, and vastus lateralis activities during QS exercise than for those during SLR exercise. However, the rectus femoris muscle activity between SLR and QS exercises was not significantly different. The ratios of vastus lateralis to vastus medialis during SLR and QS exercise were not significantly different. These results show that QS exercise is more effective for strengthening the quadriceps muscle on the whole than the SLR exercise. As for selective methods of strengthening vastus medialis specifically, both SLR and QS exercises are useful.

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Acknowledgement

Supported by : 연세대학교