KMID : 1023920150170020075
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Journal of the Korean Academy of Kinesiology 2015 Volume.17 No. 2 p.75 ~ p.82
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Comparison of Ankle Flexibility, Iso-kinetic Strength and Static¡¤Dynamic Balance in High School Judo Player depending on Chronic Ankle Sprain
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Kang Min-Jeong
Lee Jin-Seok Ahn Su-Kyoung Yang Hye-Rim Yoon Sung-Jin
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Abstract
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PURPOSE: This study was to investigate effects of chronic ankle sprain on ankle flexibility, isokinetic strength and static¡¤dynamic balances in high school Judo players.
METHODS: The subjects were twenty-four high school Judo players. There were two groups; Chronic ankle sprain group(CAS) with ankle sprain over three times in ipsilateral ankle(n=13, left ankle sprain; n=5, right ankle sprain; n=8) Ankle sprain group(AS) with ankle sprain under three times in ipsilateral ankle(n=11, left ankle sprain; n=5, right ankle sprain; n=6).
RESULTS: ROM of plantarflexion and eversion were significantly different between affected and unaffected ankles, in CAS(p=.003, p=.001, respectively). Isokinetic maximal strength of 60¢ª dorsiflexion and eversion were significantly different in both sides of ankles in both groups(p=.026, p=.017), and the strength of 60¢ª plantarflexion in CAS was significantly different between the affected and unaffected ankles(p=.003). Isokinetic maximal strength of 60¢ª inversion and eversion in CAS were significantly different between the both sides(p=.014, p=.034). In static balance of CAS, there was a significant difference between affected and unaffected ankles(p=.005). Dynamic balance of posterolateral, posteromedial and medial directions in both groups were significantly different between affected and unaffected ankles(p=.008, p=.018; p=0.13, p=.038; p=.001, p=.032).
CONCLUSIONS: In conclusion, chronic ankle sprain group has a decrease in ankle flexibility, inversion and eversion isokinetic maximal strength, and static¡¤dynamic balance. Ankle sprain group, also, has a decrease in dynamic balance and isokinetic maximal strength. Therefore, Judo players with chronic ankle sprain should be more careful of improving in ankle joint flexibility, isokinetic strength and static¡¤dynamic balance during rehabilitation.
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KEYWORD
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Judo, Ankle sprain, Flexibility, Isokinetic strength, Static¡¤Dynamic balance
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