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. 2012 Jun 1;45(9):1656–1660. doi: 10.1016/j.jbiomech.2012.03.020

Fig. 4.

Fig. 4

COP location on the foot at foot strike (COPlocFS) versus patellofemoral joint compression force (PFJCF), with the blue circles for backward running (BR) and the red crosses for forward running (FR). There was a significant correlation between PFJCF and COPlocFS (R2=0.26 and p=0.008). Note the circled outlying trials with COPlocFS close to the forefoot and a relatively low PFJCF. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)