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. 2012 Dec 20;7(12):e51888. doi: 10.1371/journal.pone.0051888

Figure 1. Methods used to evaluate body control strategies for running.

Figure 1

(A) Definition of parameters: running height (hk), COM horizontal speed (vk), virtual leg (spring connecting COP and COM), leg force (projection of GRF onto the virtual leg), components of the NP strategy for maintaining forward running speed, and definition of body orientation (ϕ). (B) Experimental coordinates and force platform setup. Dashed line box indicates dimensions of rubber mat used to obscure the force platforms.