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KMID : 1142420200180020173
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PNF and Movement
2020 Volume.18 No. 2 p.173 ~ p.182
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Effects of Intrinsic Foot Muscle Exercise on Dynamic Balance, Strength, and Vibration Threshold Sense in Persons with Ankle Instability
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Kim Jin-Hong
Lee Dong-Jin
Lee Eun-Sang
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Abstract
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Purpose: The purpose of the study was to investigate the effects of visual feedback exercise (VFE), sandal exercise (SE), and thera-band exercise (TE) on people with functional ankle instability.
Methods: The 45 study participants were divided into three groups of 15. In the VFE group, participants performed short-foot exercises using visual feedback; the SE group performed sandal exercises, and the TE group performed thera-band exercises. Over a period of 8 consecutive weeks, the experimental groups exercised for 15 minutes per session, four times per week. Balance was measured using the Biodex Balance System for dynamic balance ability (overall balance index [OBI], mediolateral balance index [MBI], and anterioposterior balance index [ABI]). Vibration threshold sense (VTS) was assessed using a vibratory sensory analyzer. Ankle muscular strength was measured using the Biodex 4 Pro. The main outcome measures were assessed at baseline and after 8 weeks of training.
Results: Significant improvements in dynamic balance were noted in all three groups (p < 0.05). Significant improvements in VTS and muscular strength were also noted in the VFE and TE groups but not in the SE group (p < 0.05).
Conclusion: Appropriate environmental and situational mediation may be of great clinical significance for patients suffering from chronic ankle instability. It is hoped that the findings will inform a program for prevention of ankle instability.
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KEYWORD
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Ankle instability, Balance, Visual feedback exercise, Sandal exercise, Thera-band exercise
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