Physical Therapy Korea (한국전문물리치료학회지)

Korean Research Society of Physical Therapy (한국전문물리치료학회)
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The Effect of Contract-Relax with Agonist Contraction on Hamstring Extensibility in Normal Subjects

무릎굽힘근의 신장성에 대한 수축-이완 기술의 효과

  • Song, Eun-Ji (Dept. of Physical Therapy, Seoul Chung-Ang Hospital) ;
  • Oh, Sung-Hee (Dept. of Rehabilitation, College of Health Science, Yonsei University) ;
  • Lee, Seung-Hwa (Dept. of Rehabilitation, College of Health Science, Yonsei University) ;
  • Yi, Chung-Hwi (Dept. of Rehabilitation, College of Health Science, Yonsei University)
  • 송은지 (서울중앙병원 물리치료실) ;
  • 오성희 (연세대학교 보건과학대학 재활학과) ;
  • 이승화 (연세대학교 보건과학대학 재활학과) ;
  • 이충휘 (연세대학교 보건과학대학 재활학과)
  • Published : 1994.12.02
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Abstract

Thirty healthy adults aged 20 to 29 with no history of musculoskeletal or neurogenic disorder volunteered for this study. The contract-relax with agonist contration(CRAC) was applied to the right hamstring muscles with the subject in the supine position. Each hamstring group was stretched on three sucessive days with several repetitions of the technique lasting 1min, 3min, and 5min. respectively. Hamstring extensibility at the knee(ROM) was measured before and after stretching using on electronic digital inclinometer(EDI). The results, namely the increase in ROM, were analysed using one-way repeated ANOVA at p<0.05. The differences were not significant. Possible factors influencing the results are excessive sensitibility of the measuring instrument, the psychological and physical status of the subjects, and the level of muscle fatigue. The mean increases in ROM were 3.0 at 1min., 2.6 at 3min, and 2.1 at 5min. Inclusion of a control group would have further defined the effects of the stretching technique.

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