Table 2.

Variables of Ground Reaction Force, mean (SD), N=16

	straight-ahead running			45° sidestep cutting
	SO	MO	HO	SO	MO	HO
Contact time (s)	0.166	0.164	0.163	0.213	0.210	0.209
	(0.045)	(0.025)	(0.037)	(0.016)	(0.008)	(0.013)
Peak vertical ground	2.57	2.60	2.58	2.77	2.75	2.74
reaction force (BW)	(0.17)	(0.27)	(0.29)	(0.033)	(0.023)	(0.026)
Vertical average loading	\	\	\	90.3	92.4	94.5
rate (BW-s⋅1)				(6.7)*	(5.8)	(7.1)

BW = body weight; SO = soft outsole; MO = medium hardness outsole; HO = hard outsole.

^*Significant difference between SO and HO turf shoes, p < 0.05.