BIOL 1004 Lecture Notes - Fascia Lata, Elastic Energy, Erector Spinae Muscles
28 Jan 2013
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Gait: process of walking: phases of gait. Gait cycle = period from heel strike to heel strike of same limb. Components: stance phase (heel strike, flat foot, toe off) + swing phase. 62% gait cycles is stance, 38% is swing per leg. 25% of gait cycle has double support (double support as speed ) Transfer of weight during stance is along lateral side of foot across ball to hallux. Sustentaculum tali: calcaneus shelf above flexor hallucis longus tendon on medial side of foot; give straight line of action. Lower limb forms inverted pendulum; most of gait is passive rocking over stance leg constant) Max. gait speed determined by height of limb and gravity. Walking is very efficient (~60-70% energy recovery; total energy relatively. Ke: supplied by pushing off (mostly gastrocnemius and soleus) Must break into running at lower speeds when going uphill, and vice versa; energy efficiency of walking as speed .
