Fig. 4
From: Effects of walking speeds and durations on the plantar pressure gradient and pressure gradient angle
Comparisons of the effect of walking speeds on the PPG and PGA of the four plantar regions at two walking durations. A PPG at 10 min walking duration. B PPG at 20 min walking duration. C PGA at 10 min walking duration. D PGA at 20 min walking duration. Data are shown as mean ± standard errors. *, a significant difference (p < 0.05). PPG, peak pressure gradient; PGA, pressure gradient angle; T1, first toe; M1, first metatarsal head; M2, second metatarsal head; and HL, heel