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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: Clin Biomech (Bristol, Avon). 2011 Jan;26(1):78–83. doi: 10.1016/j.clinbiomech.2010.09.003

Fig. 2.

Fig. 2

Variables of interest: PPA obtained from (a) the tibial acceleration curve and VIP, VILR, and VALR obtained from (b) the vertical ground reaction force curve. Note that both vertical loading rates (VILR and VALR) were calculated in the region between 20% and 80% of the VIP.