Table 3: Vertical ground reaction forces at the walk-to-run transition speed, during marching and running, for three parts of the sole of the boot.

Participants (n = 12)

Average

Min-max

SD

vGRF on the forefoot while marching (N)

978.2

840-1099

85.9

vGRF on the forefoot while running (N)

1005.4

665-1144

176.2

vGRF on the midfoot while marching (N)

427.9

349-591

101.3

vGRF on the midfoot while running (N)

507.3

228-841

174.4

vGRF on the heel while marching (N)

849.8*

757-1057

98.1

vGRF on the heel while running (N)

619.2*

288-768

138.1

Note: * the mean forces on the heel are significantly lower while running than while marching.
*p = 0.00; a significant difference between factors indicated.
n: number; Min: Minimum; Max: maximum; SD: standard deviation; vGRF: vertical Ground Reaction Forces; N: Newton