초록

[목적] 본 연구는 기능적 피로 프로토콜이 하지의 동적 및 정적 자세조절의 기능적 움직임 특성에 미치는 영향을 살펴보는 데 있었다. [방법] 총 20명의 대학생(남자 10명, 여자 10명, 나이 22.5±2.7, 체중 67.0±13.0kg, 신장 168.0±8.9cm)을 대상으로 개발된 운동 피로 프로토콜을 실시하였다. 남녀 그룹으로 나누어 기능적 피로 프로토콜 적용 전․후의 혈중 젖산 수치, 심박 수, 운동자각도 검사와 정적·동적 자세조절 검사(10초간 눈 감고 한 발로 균형 지면반력기에 서 있기, 30cm 박스 위에서 한 발로 착지하기)를 측정하여 하지의 기능적 특성 미치는 효과를 검증하였다. [결과] 기능적 피로 프로토콜이 피로 전보다 피로 후에 평균 심박 수 분당 176.3과 평균 운동자각도 18을 보였고, 혈중 젖산 수치는 유의한 차이를 보였다(p<.05). 또한, 정적 자세조절에서 많은 움직임과 실패 횟수를 보였고(p<.05), 동적 자세조절에서 착지 전략이 다소 경직된 동작으로 변했다. 즉, 초기접지 시점과 최대 수직 지면 반력 시점에서 무릎 굽힘이 감소한 결과를 보였다. [결론] 본 연구의 결과로 고안된 운동 피로 프로토콜은 하지의 피로를 유발할 뿐만 아니라 피로-지구력을 향상하는 훈련으로 사용할 수 있다. 향후 연구에서 착지 전략 자세를 명확하게 확인하기 위해 착지 높이를 높일 것을 권장한다.

키워드

피로, 기능적 피로 프로토콜, 정적 자세조절, 동적 자세조절

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