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Comparison by Ultrasound of Relative Thickness of the Iliotibial Band in Healthy Subjects Following Four Self-Stretching Exercises

한국전문물리치료학회지 2012년 19권 4호 p.24 ~ 31
김현숙, 윤태림,
소속 상세정보
김현숙 ( Kim Hyun-Sook ) - Yeoju Institute of Technology Department of Physical Therapy
윤태림 ( Yoon Tae-Lim ) - Yonsei University Graduate School Department of Physical Therapy

Abstract


The aim of this study was to investigate the effectiveness of self-stretching exercises for iliotibial band (ITB) (Side-lying; right hip and knee were flexed to support the pelvis while left hip was extended and adducted, Standing A; side-bending of the trunk on standing with crossed leg, Standing B; same as Standing A, except the hands were clasped overhead and shifted right side, and Standing C; same as Standing B, except moving the arms diagonally downward) to help determine the most effective self-stretching method to stretch ITB. Twenty-one healthy subjects who do not have ITB shortness from Yonsei University (14 men and 7 women) between the ages of 18 to 28 years voluntarily participated. Ultrasound was performed to measure the thickness of the ITB between the long axis of the ITB and the level parallel to the lateral femoral epicondyle during four self-stretching exercises. All data were found to approximate a normal distribution. We used a one-way repeated-measures analysis of variance (ANOVA) to compare the thickness of the ITB among all self-stretching exercises. The level of significance was set at α=.05. The ANOVA was followed by Bonferroni’s correction. The overall mean of ITB thickness was 1.14±.4 ㎜ (± standard deviation) in resting status. The change in the ITB thickness in percentages between the tested position of each self-stretching exercises and resting status was significant (p<.05) (Side-lying 26.62±10.18% with 95% confidence interval [CI]=21.99~31.25%; Standing A 29.46±16.19% with 95% CI=22.09~36.84%; Standing B 44.06±14.82% with 95% CI=37.31~50.81%; Standing C 53.76±12.1% with 95% CI=48.25~59.29%). Results indicated significant differences among four self-stretching exercises except Side-lying versus Standing A (p<.01). Based on these findings, the Standing C self-stretching exercise was the most effective in stretching the ITB thickness among four types of ITB self-stretching exercises. Additionally, the Side-lying self-stretching exercise using gravity to stretch the ITB is recommended as a low-load (low-intensity), long-duration stretch.

키워드

iotibial band friction syndrome;Side-lying;Snapping hip;Ultrasound

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