TABLE 2.

COMPARISON OF INDEPENDENT VARIABLES BY THE TYPES OF CHEST PROTECTOR (N = 15)

CP types	Height (m)	Foot speed (m·s−1)	Hip flexion (°)	Shoulder ROM (°)	Shoulder speed (m·s−1)
Front axe kick
CPno	1.76 ± 0.052	7.91 ± 1.102	146.98 ± 34.502	71.83 ± 16.182	2.70 ± 0.78
CPe	1.72 ± 0.051,3	7.22 ± 0.831,3	140.01 ± 32.521,3	60.45 ± 21.161,3	2.35 ± 0.40
CPn	1.75 ± 0.052	7.84 ± 0.982	145.11 ± 32.912	69.67 ± 22.542	2.63 ± 0.51
p	<0.001	<0.001	0.003	0.010	0.080
F	10.417	17.818	7.413	5.512	3.082
effect size	0.427	0.733	0.346	0.282	-
In-out axe kick
CPno	1.74 ± 0.052	7.72 ± 0.572	150.95 ± 34.502	71.45 ± 16.222	3.00 ± 0.83
CPe	1.69 ± 0.061,3	7.24 ± 0.691,3	140.12 ± 33.111,3	63.24 ± 15.811,3	2.57 ± 0.573
CPn	1.73 ± 0.052	7.70 ± 0.842	146.81 ± 32.282	69.36 ± 19.692	2.94 ± 0.652
p	<0.001	<0.001	<0.001	0.014	0.010
F	36.220	17.546	15.298	5.022	6.715
effect size	0.721	0.556	0.522	0.264	0.508
Out-in axe kick
CPno	1.72 ± 0.052	7.41 ± 0.732	145.55 ± 32.402	68.93 ± 23.952	2.93 ± 0.562
CPe	1.69 ± 0.061,3	6.87 ± 0.581,3	135.75 ± 33.671,3	57.75 ± 25.301,3	2.44 ± 0.401,3
CPn	1.71 ± 0.052	7.34 ± 0.742	143.94 ± 32.022	68.39 ± 24.102	2.87 ± 0.512
p	<0.001	<0.001	0.003	<0.001	0.006
F	12.270	13.460	9.765	12.189	7.891
effect size	0.467	0.490	0.600	0.465	0.548

Note: CP = chest protector; CP_no = no chest protector; CP_e = existing chest protector; CP_n = novel chest protector; Height = maximum vertical height of the toe; Foot speed = maximum downward kicking foot speed; Shoulder ROM = ipsilateral shoulder flexion-extension range of motion; Shoulder speed = ipsilateral shoulder extension pulling speed.

¹Significantly different compared with CP_no

²Significantly different compared with CP_e

³Significantly different compared with CP_n