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KMID : 1206220200270030045
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Journal of Korean Academy of Physical Therapy Science
2020 Volume.27 No. 3 p.45 ~ p.55
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The effect of whole-body cryotherapy intervention after an exercise on MVIC and ROM of EIMD
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Shin Sung-Phil
Son Gyeong-Hyeon
Jeon Jae-Geun
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Abstract
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Background: The purpose of this study was to investigate the effects of WBC (whole-body cryotherapy)on the MVIC (maximal voluntary isometric contraction)and active ROM (range of motion) recovery of after EIMD (exercise-induced muscle injury).
Design: Randomized Controlled Trial.
Methods: Thirty subjects who are student in their 20s at a university participated in this study, these subjects were assigned into three groups, a control group (n=10), experiment groupⅠ(n=10), and experiment groupⅡ(n=10). The subjects in the experimental groupⅠ were intervened by WBC (-130℃, 3 minutes) before induced EIMD, the experimental groupⅡ were intervened by WBC (-130℃, 3 minutes) after induced EIMD, and the control group weren’t by any intervened after induced EIMD.
Results: First, In the comparison of the MVIC, there were significant variations with the lapse the time in three groups (p<.001) and there was a significant interaction of time and group (p<.001). In the among group comparison, the MVIC of experimental group Ⅱ was significantly larger than those of other groups (p<.001). Second, In the comparison of the active extension angle, there were significant variations with the lapse the time in three groups (p<.001) and there was a significant interaction of time and group (p<.001). In the among group comparison, the active extension angle of experimental group Ⅱ was significantly smaller than those of other groups (p<.001). Third, In the comparison of the active flexion angle, there were significant variations with the lapse the time in three groups (p<.01) and there was a significant interaction of time and group (p<.001). In the among group comparison, the active flexion angle of experimental group Ⅱ was significantly larger than those of other groups (p<.05).
Conclusion: The above results revealed that the WBC intervention after an exercise had a positive effect of muscle function after EIMD. Therefore we can consider the WBC as a considerable intervention method to prevent or reduce an exercise injury.
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KEYWORD
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Exercise induced muscle damage, Maximal voluntary isometric contraction, Range of motion, Whole-body cryotherapy
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