한 다리 서기 시 내측 쐐기(wedge)의 적용이 하지 근활성도에 미치는 영향

• Published in: Han'guk Chŏnmun Mulli Ch'iryo Hakhoe chi = Journal of the Korean Academy of University Trained Physical Therapists Vol. 18; no. 2; pp. 60 - 66
• Main Authors: 홍지아, Ji A Hong, 김민희, Min Hee Kim, 정도헌, Doh Heon Jung, 임원빈, One Bin Lim, 이충휘, Chung Hwi Yi
• Format: Journal Article
• Language: Korean
• Published: 한국전문물리치료학회 31.05.2011; Korean Academy Of University Trained Physical Therapy
• Subjects: Electromyography; Foot posture; Medial Wedges; One Leg standing; 물리치료학; Medial wedges; One leg standing; Electromyography; Foot posture
• ISSN: 1225-8962; 2287-982X

Foot posture is important in the development of the musculoskeletal structure in the lower limbs because it can change the mechanical alignment. Although foot orthotics are widely used for the correction of malalignments in the lower extremities, the biomechanical effects of wedges have not yet been cleared. The aim of this study was to investigate whether medial wedges affect the electromyographic (EMG) activity of the knee and hip joints in healthy adults that are performing one leg standing. Seventeen healthy volunteers performed the one leg standing under two foot conditions: A level surface, and a 15˚ medial wedge. The subjects` EMG data for the gluteus maximus (Gmax), gluteus medius (Gmed), tensor fasciae latae (TFL), biceps femoris (BF), vastus lateralis (VL), and vastus medialis oblique (VMO) were recorded, along with the surface EMG, and all were analyzed. The EMG activity of the Gmed and TFL had significantly decreased under the medial wedge condition during one leg standing. Further study is needed in order to investigate whether medial wedges influence the EMG activity and kinematic data of the knee and hip joints as well as the ankle joints in adults with flexible flatfoot, while they are performing one leg standing.