무릎굽힘근의 신장성에 대한 수축-이완 기술의 효과
The Effect of Contract-Relax with Agonist Contraction on Hamstring Extensibility in Normal Subjects
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Thirty healthy adults aged 20 to 29 with no history of musculoskeletal or neurogenicdis야der 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. Eachhamstring group was stretched on three sucessive days with several repetitions of thetechnique lasting lrnin, 3rnin, and 5min. respectively. Hamstring extensibility at theknee(ROM) was measured before and after stretching using on electronic digitalinclinometer(EDI). The results, namely the increase in ROM, were analysed usingone-'way repeated ANOV A at p<0.05. The differences were not significant. Possiblefactors influencing the results are excessive sensitibility of the measuring instrument, thepsychological and physical status of the subjects, and the level of muscle fatigue. Themean increases in ROM were 3.0 at lmin., 2.6 at 3min, and 2.1 at 5min. lnclusion of acontrol group would have further defined the effects of the stretching technique.
Abstract
Thirty healthy adults aged 20 to 29 with no history of musculoskeletal or neurogenicdis야der 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. Eachhamstring group was stretched on three sucessive days with several repetitions of thetechnique lasting lrnin, 3rnin, and 5min. respectively. Hamstring extensibility at theknee(ROM) was measured before and after stretching using on electronic digitalinclinometer(EDI). The results, namely the increase in ROM, were analysed usingone-'way repeated ANOV A at p<0.05. The differences were not significant. Possiblefactors influencing the results are excessive sensitibility of the measuring instrument, thepsychological and physical status of the subjects, and the level of muscle fatigue. Themean increases in ROM were 3.0 at lmin., 2.6 at 3min, and 2.1 at 5min. lnclusion of acontrol group would have further defined the effects of the stretching technique.