Hailong Su, Liming Song, Zhaojian Xu and Junxia Zhang
This paper concentrates on the analysis of the human body of lower limb muscles and the effect of the gait motion. Eight human lower limb muscles are selected, containing: hip extensor: (semitendinosus and biceps femoris), hip flexor: (rectus femoris and vastus medialis), knee extensor: (vastus lateralis, rectus femoris, vastus medialis), knee flexor: (lateralis gastrocnemius, medialis gastrocnemius and semitendinosus), ankle plantar flexion: (lateralis gastrocnemius and medialis gastrocnemius), ankle dorsal flexor: (tibialis anterior). The Telemyo 2400 DTS and Vicon MX system is used to collect gait parameters and surface Electromyography (sEMG) of lower limbs when 10 healthy subjects walk on the oil trails recovery or fall from slipping during leg heel contacting trail moment to swing leg heel contacting trail moment (the first double support and single support phase). Moreover, this paper compares and analyzes the muscles reaction and gait parameters change about hip, knee and ankle after subjects suffer the interference and then slip or fall. The results indicate that increasing the stretching hip, the knee flexion and ankle dorsiflexion movement contributes to human recovery balance from unexpected slip. The results of this research will explore new ideas and provide a reference value for the formulation of anti-slip strategy, rehabilitation training and the development of lower limb walker.
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