• Title/Summary/Keyword: Eccentric contraction

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Effects of Relaxation Techniques on Flexibility and Balance of the Lower Limb in Adults with Hamstring Shortening (넙다리뒤근 단축이 있는 성인에게 이완 기법의 적용이 하지의 유연성과 균형에 미치는 영향)

  • Jung-Woo Lee;Seong-Min Jeon;Ha-Yeong Kim;Jong-Yeon Bae;Song-Chan Son;Eun-Jin Song;Sang-Eun Sim;Hyeong-Uk Lee;Hye-Kyeong Lee;Baek-Gwang Jo;Sung-Bin Jo;Jin-Hee Joo;Ha-Yeon Jin;Jeong-Hyeon Hwang;Min-Hee Kim
    • PNF and Movement
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    • v.22 no.1
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    • pp.55-70
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    • 2024
  • Purpose: The purpose of this study was to investigate the effects of three relaxation techniques, namely, Static Stretching Exercise (SSE), Eccentric Contraction Exercise (ECE), and Suboccipital Muscle Release (SMR) on the flexibility and balance of the lower limb in adults with hamstring shortening. Methods: The participants were 45 adults in their 20s with hamstring shortening. They performed three exercises (i.e., SSE, ECE, and SMR) for two weeks. We measured flexibility, muscle tone and stiffness, proprioception, and balance before and after the intervention, applying each relaxation technique. Data were analyzed using two-way repeated measures analysis of variance (ANOVA). The significance level was set at α=0.05. Results: Flexibility increased in the SSE, ECE, and SMR groups, with the SSE group showing the greatest improvement. Muscle tone and stiffness decreased in all groups, with the ECE group exhibiting the highest reduction. Proprioception increased in the SSE, ECE, and SMR groups, with SSE demonstrating the greatest enhancement. Balance also increased in all groups, with the ECE group showing the most pronounced improvement. Conclusion: Overall, all three relaxation techniques for hamstring shortening resulted in improved flexibility, muscle tone and stiffness, proprioception, and balance of the lower limb in adults with hamstring shortening. The findings of this study underscore the importance of selecting an appropriate technique according to the purpose of treatment and the condition of the patient.