Fig. 6
From: Effects of walking speeds and durations on the plantar pressure gradient and pressure gradient angle
The scatter plots show the relationships among the PPP, PPG, and PGA in three walking durations at two walking durations. A PPP versus PPG at 10 min walking duration. B PPP versus PGA at 10 min walking duration. C PPG versus PGA at 10 min walking duration. D PPP versus PPG at 20 min walking duration. E PPP versus PGA at 20 min walking duration. F PPG versus PGA at 20 min walking duration. PPP, peak plantar pressure; PPG, peak pressure gradient; PGA, pressure gradient angle; T1, first toe; M1, first metatarsal head; M2, second metatarsal head; and HL, heel. *, a significant correlation (p < 0.05); **, a significant correlation (p < 0.01)