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Analysis Of Heel Raise Exercise With Three Foot Positions, Kimberly J. Arnsdorff, G. Ken Limbaugh, Bryan L. Riemann
Analysis Of Heel Raise Exercise With Three Foot Positions, Kimberly J. Arnsdorff, G. Ken Limbaugh, Bryan L. Riemann
Department of Health Sciences and Kinesiology Faculty Publications
Prior research revealed activation differences between the medial (MG) and lateral (LG) gastrocnemius when performing heel raise exercise with neutral (N), internally-rotated (IR) and externally-rotated (ER) foot positions. Studying underlying biomechanics may help explain activation differences. The purpose was to compare ankle (AN), knee (KN), and hip (HI) contributions (initial joint angles) to attaining each initial foot position, ankle flexion-extension range of motion, ankle mechanical energy expenditure, repetition time, and percent cycle concentric-eccentric transition between N, IR, and ER foot positions. Twenty healthy subjects (11 male, 9 female) with resistance training experience performed twelve repetitions of free-weight (135% body mass) …