Table 2. The z-values in the vertical (VT), anteroposterior (AP), and mediolateral (ML) directions for each speed conditions.

Z values		Very low	Low	Preferred	Fast	Very fast
Head	VT	2.75 (0.19)	2.51 (0.21)	2.51 (0.29)	2.31 (0.29)	2.28 (0.24)
	AP	1.80 (0.65)	1.74 (0.60)	1.79 (0.66)	1.78 (0.60)	1.66 (0.67)
	ML	1.58 (0.37)	1.30 (0.31)	1.53 (0.31)	1.42 (0.30)	1.41 (0.35)
Lumbar	VT	2.76 (0.23)	2.41 (0.21)	2.53 (0.24)	2.40 (0.20)	2.32 (0.20)
	AP	1.62 (0.27)	1.33 (0.25)	1.56 (0.37)	1.48 (0.24)	1.43 (0.30)
	ML	1.10 (0.23)	0.95 (0.18)	1.13 (0.30)	1.13 (0.26)	1.10 (0.23)
Rt. Hip	VT	2.51 (0.24)	2.27 (0.22)	2.32 (0.19)	2.23 (0.32)	2.15 (0.23)
	AP	1.29 (0.28)	1.07 (0.34)	1.36 (0.25)	1.28 (0.37)	1.27 (0.24)
	ML	2.04 (0.49)	1.79 (0.49)	2.01 (0.60)	1.91 (0.56)	1.88 (0.70)
Rt. Thigh	VT	2.45 (0.29)	2.16 (0.22)	2.25 (0.22)	2.22 (0.26)	2.11 (0.27)
	AP	1.36 (0.24)	1.12 (0.26)	1.39 (0.28)	1.49 (0.30)	1.44 (0.25)
	ML	1.40 (0.40)	1.22 (0.35)	1.37 (0.33)	1.46 (0.27)	1.42 (0.29)
Rt. Shank	VT	2.27 (0.27)	2.02 (0.22)	2.29 (0.20)	2.18 (0.21)	2.05 (0.20)
	AP	1.27 (0.21)	1.14 (0.22)	1.54 (0.21)	1.52 (0.22)	1.52 (0.25)
	ML	1.13 (0.15)	1.03 (0.15)	1.27 (0.18)	1.21 (0.18)	1.24 (0.19)
Lt. Hip	VT	2.48 (0.19)	2.22 (0.24)	2.37 (0.35)	2.35 (0.26)	2.32 (0.33)
	AP	1.19 (0.25)	1.05 (0.22)	1.33 (0.30)	1.29 (0.31)	1.25 (0.32)
	ML	1.66 (0.55)	1.46 (0.39)	1.59 (0.50)	1.56 (0.37)	1.45 (0.46)
Lt. Thigh	VT	2.36 (0.20)	2.20 (0.24)	2.24 (0.33)	2.15 (0.30)	2.18 (0.29)
	AP	1.28 (0.21)	1.19 (0.21)	1.45 (0.24)	1.39 (0.32)	1.52 (0.26)
	ML	1.45 (0.20)	1.35 (0.23)	1.43 (0.25)	1.40 (0.23)	1.53 (0.23)
Lt. Shank	VT	2.29 (0.25)	2.06 (0.21)	2.31 (0.27)	2.21 (0.33)	2.08 (0.29)
	AP	1.31 (0.21)	1.17 (0.21)	1.55 (0.25)	1.57 (0.30)	1.57 (0.28)
	ML	1.36 (0.24)	1.23 (0.20)	1.38 (0.22)	1.33 (0.24)	1.31 (0.22)

Values are shown as mean (SD).