Fig. 4
Mean (SD) of average PVGRF changes for treadmill running over time. “*” Statistically significant main effect of average PVGRF from 0–1 min to 14–15 min (P < 0.05). “#” Indicates a significant difference from 0–1 min (P < 0.05). “δ” Indicates a significant difference from 5–6 min (P < 0.05). “λ” indicates a significant difference from 9–10 min (P < 0.05)