Characteristics of Muscle Activity in the Lower Extremity during Stepping over Various Obstacle
이한숙, 홍승범, 진하늘, 최주리, 선희창, 정덕영,
소속 상세정보
이한숙 ( Lee Han-Suk )
Eulji University Department of Physical Therapy
홍승범 ( Hong Seung-Beom )
Eulji University Department of Physical Therapy
진하늘 ( Chin Ha-Nul )
Eulji University Department of Physical Therapy
최주리 ( Choi Ju-Li )
Eulji University Department of Physical Therapy
선희창 ( Seon Hee-Chang )
Eulji University Graduate School Department of Physical Therapy
정덕영 ( Jeong Duk-Young )
Seongnam Senior Complex
Abstract
PURPOSE: This study examined the muscle activity while stepping over obstacles with various heights and widths to provide basic data for training and preventing falls.
METHODS: Fifteen normal young adults (seven males and eight females) were recruited. The participants walked on a 5m walkway with six obstacles. The heights of obstacles were 0%, 10%, and 40% of the subject's leg length, and the width of the obstacles was 7cm and 14cm. The participants traversed the course twice per obstacle. The muscle activities of the soleus, tibialis anterior (TA), vastus medialis (VM), and vastus lateralis (VL) were measured using surface electromyography. A Mann-Whitney test and Kruskal- Wallis test were used to examine the differences between obstacles.
RESULTS: The muscle activities of the VL and the soleus of the stance leg and lead leg after crossing over the obstacles increased with increasing width, and there were significant differences in muscle activities between obstacle width (p<.05) except for the muscle activity of TA of the stance leg after crossing over the obstacles. A significant difference in muscle activities was observed according to the height of the obstacles with 14 cm (p<.05) except for the muscle activity of the VL, soleus of the leading leg, and TA of the stance leg.
CONCLUSION: The role of the VL and Soleus increased with increasing obstacle width, and the overall muscle activities of the lower extremities increased with increasing obstacle height. These results can be used to suggest a program to prevent falls.
키워드
Muscle activity; Electromyography; Walking
원문 및 링크아웃 정보
등재저널 정보