Abstract

본 연구는 세로발활 높이와 트레드밀 경사도 차이에 따른 하지의 근활성도를 비교하여 효율적인 보행 운동에 관련 기초자료를 제시하고자 하였다. 하지에 정형외과적 및 관절가동범위에 제한이 없는 학생 17명을 대상으로 세로발활 높이를 정상발과 편평발로 나누어 경사도 $0^{\circ}$ , 오르막 $5^{\circ}$ , $10^{\circ}$ , $15^{\circ}$ , 내리막 $5^{\circ}$ , $10^{\circ}$ , $15^{\circ}$ 에서 넙다리 곧은근, 넙다리 두갈래근, 앞정강이근, 장딴지근 가쪽과 안쪽 5개 근육의 근활성도를 측정하였다. 경사도 비교 결과 통계학적으로 유의하였고(p $0^{\circ}$ 과 내림 $15^{\circ}$ 에서 유의한 차이가 있었다(p .05). 이러한 결과로 미루어 볼 때 정상발과 편평발은 하지 근활성도에서 차이를 나타냄을 알 수 있었다. 따라서 앞으로는 본 연구의 제한점을 보완하여 좀 더 많은 연구가 이루어져야 할 것이다. 【The purpose of this study was to compare the lower extremity muscle activities according to the different longitudinal arch and treadmill inclination and to provide basic data on treadmill walking exercise. The selected 17 subjects who had not lower extremity injury and ROM limitation were recruited in this study. The longitudinal arch was divided into normal foot and flat foot. The inclinations of the treadmill were $0^{\circ}$ , up hill $5^{\circ}$ , $10^{\circ}$ , $15^{\circ}$ , down hill $5^{\circ}$ , $10^{\circ}$ and $15^{\circ}$ . The electromyography was used to analyze the muscle activity of rectus femoris, biceps femoris, tibialis anterior, gastrocnemius lateralis and medialis. There were significant differences between the inclination $0^{\circ}$ and down hill $15^{\circ}$ . There was no interactive effect of treadmill inclination on the longitudinal arch. The activity difference of lower extremity muscle was not conspicious. There existed the interactive effect between the longitudinal arch and muscle activity. The contrast test within subjects showed positively in the rectus femoris and gastrocnemius medialis, biceps femoris and gastrocnemius medialis. The different longitudinal arch did not influence on the effect(p>.05). There was significant difference between the normal foot and the flat foot. So it is necessary to carry out the long term study.】

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