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. Author manuscript; available in PMC: 2013 Sep 21.
Published in final edited form as: J Biomech. 2012 Aug 9;45(14):2438–2443. doi: 10.1016/j.jbiomech.2012.06.037

Figure 4.

Figure 4

Peak contributions of major muscle groups to mediolateral ground reaction force, as a percentage of body weight, at four walking speeds during (A) 0-6%, (B) 14-30%, and (C) 40-56% gait cycle. Peak contributions for each speed were determined after averaging contributions across all eight unimpaired subjects. Error bars span ± one standard deviation. Arrow indicates significant effect of speed on contribution. Table 1 lists the muscles indicated by each abbreviation. “Contra” indicates muscles on the contralateral limb; all other muscles are on the ipsilateral limb.