Figure 2
From: Functional significance of vertical free moment for generation of human bipedal walking

Mean normalised GRF and VFM profiles during walking with NL and PC shoes when arm swing was restrained (NLwoAS and PCwoAS, respectively) (a). Mean normalised GRF and VFM profiles were also compared with those using the PC shoes when the arm swing was not restrained (PCwAS) (b). Blue solid line = NLwoAS, Red solid line = PCwoAS. Corresponding dashed lines represent standard deviations. Black dashed line = PCwAS. Asterisks indicate statistical differences of the maximum or minimum values between NLwoAS and PCwoAS (*: p < 0.05. **: p < 0.01). Pluses indicate statistical differences between NLwoAS and PCwAS (+: p < 0.05. ++: p < 0.01).