학술논문

The effects of Evjenth-Hamberg stretching and contract-relax with antagonist contract on passive ankle dorsiflexion and dynamic standing balance in adults with restricted ankle
Document Type
Dissertation/ Thesis
Author
Source
Subject
Evjenth-Hamberg stretching (EHS)
contract-relaxantagonist-contract (CRAC)
dynamic standing balance
passive ankle dorsiflexion
restricted ankle.
Language
English
Abstract
Objective: The purpose of this study was to investigate the changes in EHS and CRAC in passive ankle dorsiflexion during a stretching technique using isometric contract and to investigate the effect of this change on dynamic balance in a standing posture.Methods: Subjects performed a weight bearing lunge test in order to measure passive ankle dorsiflexion and a Y-balance test to measure dynamic standing balance. All measurements recorded the rate and amount of change before and after the experiment. Data were analyzed by the paired t-test to compare the differences before and after the experiment, one-way ANOVA to compare differences between groups, and Bonferroni's method for the post-test.Results: The results of this study are as follows:1) There were statistically significant differences in the rate of change before and after the experiment in each group in passive ankle dorsiflexion (p < 0.05).2) The rate of change in the EHS group and the CRAC group in passive ankle dorsiflexion differed significantly from the rate of change in the control group [static stretching (SS)] (p < 0.05), but there was no significant difference between the two groups (p > 0.05).3) In the dynamic standing balance, the rate of change before and after each group were statistically significant (p < 0.05).4) The rate of change in the EHS group and the CRAC group in dynamic standing balance differed significantly from the rate of change in the control group (p < 0.05), but there was no significant difference between the two groups (p > 0.05).Conclusion: Both EHS and CRAC showed statistically significant effects over SS, which is commonly used for enhancing the mobility of ankle joints and dynamic standing balance. When used clinically, EHS, which is conducted in a comfortable position for isometric contractions, is considered to be more effective; however, this should be selectively used depending on the severity of pain and the muscle contractions of the subjects.
목적: 본 연구의 목적은 isometric contract을 이용하는 stretching technique 중에서 EHS와 CRAC가 passive ankle dorsiflexion에 어떤 변화를 미치는지 알아보고, 이 변화가 선 자세에서의 dynamic balance에 어떤 영향을 미치는지 알아보고자 한다.방법: Passive ankle dorsiflexion을 측정하기 위하여 weight bearing lunge test를 실시하였고, dynamic standing balance를 측정하기 위하여 Y-Balance test를 실시하였다. 모든 측정은 실험 전, 후 변화율을 기록하였다. 자료처리는 그룹 내 실험 전, 후 차이를 비교하기 위하여 대응표본 t검정(paired t test), 그룹 간 차이를 비교하기 위하여 one-way ANOVA), 사후 검정으로는 Bonferroni’s method을 실시하였다.결과: 본 연구 결과는 다음과 같다.1)Passive ankle dorsiflexion에서 각 그룹 내 실험 전 ,후 변화율은 모두 통계적으로 유의한 차이가 있었다(p0.05).3)Dynamic standing balance에서 각 그룹 내 실험 전,후 변화율은 모두 통계적으로 유의한 차이가 있었다(p0.05).결론: EHS와 CRAC모두 ankle의 가동성 증진 및 dynamic standing balance에 일반적으로 사용되는 static stretching보다 통계적으로 유의한 효과를 보였다. 임상에서 활용 시에는 등척성수축을 하기 편안한 위치에서 실시하는 EHS가 더욱 효과적이라 사료되나 이는 대상자의 통증 정도, 근육 수축 정도 등에 따라 선택적으로 사용해야 할 것으로 사료된다.