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각속도 300 °/sec에서 기능적 발목불안 유무에 따른 고유수용성감각, 발목 근력, 그리고 최고 회전력까지 걸리는 시간의 생체역학적 특성 차이

Different Biomechanical Characteristics in Proprioception, Muscle Strength, and Time to Peak Torque at Velocity of 300 °/sec of the Ankle Joint in People With or Without Functional Ankle Instability

한국전문물리치료학회지 2013년 20권 3호 p.45 ~ 53
박은영, 김원호,
소속 상세정보
박은영 ( Park Eun-Young ) - 전주대학교 사범대학 중등특수교육과
김원호 ( Kim Won-Ho ) - 울산과학대학교 물리치료학과

Abstract


The purpose of this study was to examine the differentiation of proprioception, invertor and evertor muscle strength, and time to peak torque at a velocity of 300 °/sec of the ankle joint in people with or without functional ankle instability (FAI). Nineteen subjects with a history of ankle sprain participated. All subjects were divided into FAI group (n1=9, Cumberland ankle instability tool (CAIT)≤24) and a control group (n2=10) based on their CAIT scores. Isokinetic dynamometer was used to measure the sense of active joint position of the ankle at mid-range and end-range of an inversion motion and invertor as well as the evertor muscle strength and time to peak torque at 300 °/s. The FAI group showed a statistically reduction in invertor and evertor muscle strength and time to peak torque when compared to the control group (p<.05). Muscle strength and time to peak torque of the invertor and evertor, as well as the sense of active joint position at end-range were also lower in the FAI group than in the control (p<.05). Correlations between CAIT score and position sense at end-range (r=-.577) and invertor muscle strength (r=.554) were statistically significant (p<.05). Individuals with FAI showed reduction in invertor and evertor muscle strength and recruitment time as well as in proprioception of the ankle joint. Thus, proprioception and invertor and evertor muscle strength of the ankle joint at fast angular velocity may be investigated when examining and planning care for individuals with FAI.

키워드

Ankle instability; Evertor; Invertor; Proprioception

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