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태권도 훈련 형태가 피로유발에 의한 자세 안정성의 변화에 미치는 영향

Differential effects of Taekwondo training on postural stability after fatigue induced by aerobic endurance exercise.

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초록

본 연구는 태권도 겨루기(n=15)와 품새(n=15) 선수를 대상으로 하여, 단기성 점진 부하운동에 의한 피로유발이 정적 및 동적 평형성의 변화와 회복시간에 미치는 영향에 대해 연구하고, 평형성과 신체구성, 등속성 근 기능의 상관관계를 연구하는데 목적이 있다. 동적 평형성의 비교를 위해 지면 반력기(force-plate)를 이용하여 안정 시, 피로 직후, 피로 후 5분, 피로 후 10분, 피로 후 15분을 측정하여 비교하였고, 피로유발을 위해 트레드밀에서 Bruce protocol을 적용하여 all-out까지 운동 하였다. 연구결과 두 집단의 신체구성 및 등속성 근 기능의 비교에서 무릎신전, 굴곡근력, 발목저측, 배측근력, 무릎신전 PT%BW, 무릎굴곡 PT%BW, 발목배측 PT%BW, 발목 저측, 배측 Ratio에서 겨루기 집단이 유의하게 높게 나타났다. 정적평형성, 동적평형성, 신체구성 및 등속성 근 기능의 상관관계에서는 겨루기 집단의 정적 평형성은 발목 저측근력과, 동적 평형성은 체중, BMI 및 무릎 굴곡근력이 유의한 상관관계를 나타내었다. 품새 집단은 동적 평형성에서 체지방율과 안정시 ML이 유의한 상관관계를 나타내었다. 신체구성과 등속성 근 기능이 평형성에 미치는 영향을 확인하기 위한 회귀분석 결과 겨루기 집단의 정적 평형성에는 발목 저측근력, 동적 평형성은 겨루기, 품새 집단 모두 동적 평형성 안정 시 면적, AP, 또는 ML로 비슷한 경향을 보였고, 겨루기 집단에서만 BMI가 선택되었다. 결론적으로 체력적 요소보다 체구성과 인체측정 요인이 평형성과 더 높은 관련성을 보여 주었으며 피로 유발 후 정적 평형성에서 만이 집단 간의 유의한 차이가 존재하였다.

Abstract

The purpose of this study was to evaluate the effects of fatigue induced by short period of strenuous exercise performed on motor driven treadmill on postural control of 15 Taekwondo poomsae players and 15 sparing players. Participants completed one leg standing with eyes closed test for static balance and force-plate test for dynamic balance before maximal aerobic exercise on the treadmill using Bruce protocol measured by Quark b2 (Cosmed, USA) respiratory gas analyzer. After completion of aerobic test the participant repeated one leg standing and force-plate test in the separate session. The data collected were analyzed by SPSS statistical package using descriptive statistics, one-way and two-way repeated measure ANOVA, independent t-test, correlation analysis, and multiple regression analysis with 0.05 significance level. The results of sparing players showed that the ankle plantarflexor peak torque were related to static stability. The weight, BMI, knee flexion peak torque were statistically related to dynamic stability. Poomsae players showed that the percent body fat was related to dynamic stability. The ankle girth and percent body fat were selected as independent variable in prediction equation for poomsae players. Dorsiflexion peak torque, RER, and BMI were also selected as independent variable in prediction equation for sparring players. The change of static stability between poomsae players and sparing players was significantly different. Poomsae players returned in 10 minutes after fatigue. The dynamic stability did not show significant difference between two groups.

참고문헌 (46)

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