Fig. 7
From: Effects of walking speeds and durations on the plantar pressure gradient and pressure gradient angle
Illustration of relationships among the PPP, PPG, and PGA in three walking speeds and two walking duration. The Overlaps indicated a significant correlation. A 1.8 mph at 10 min. B 3.6 mph at 10 min. C 5.4 mph at 10 min. D 1.8 mph at 20 min. E 3.6 mph at 20 min. F 5.4 mph at 20 min. PPP, peak plantar pressure; PPG, peak pressure gradient; PGA, pressure gradient angle; ▥ parallel-line, a significant correlation (p < 0.05); ▦ cross-line, a significant correlation (p < 0.01)