Table 1. Greater torque generation at the back foot in metal spike shoe. Data are means (±SD).

	Back foot			Front foot
	Tz max (Nm)	Tz range (Nm)	COFxy	Tz max (Nm)	Tz range (Nm)	COFxy
Metal Spike	7.8 (1.6)	14.8 (1.8) *	.654 (.135)	20.8 (3.7)	38.1 (5.9)	.634 (.097)
Alternative spike	7.2 (1.6)	14.3 (1.9)	.631 (.078)	20.4 (4.3)	38.9 (5.5)	.631 (.085)
Flat sole	7.2 (1.5)	13.2 (2.0) *	.607 (.090)	19.7 (4.0)	39.2 (4.2)	.608 (.061)

* p < 0.05.