Table 3. Comparison between light and heavy weight balls in kinetic parameters.

	Light weight ball	Heavy weight ball	p-value
Ball reaction force (N)	42.77 ± 6.42	52.00 ± 8.60	<0.001**
Elbow varus torque (Nm)	42.72 ± 10.42	42.92 ± 10.44	0.801
Shoulder internal rotation torque (Nm)	47.22 ± 10.60	46.27 ± 10.79	0.245
Elbow varus torque efficiency (Nm/ball speed)	1.35 ± 0.23	1.41 ± 0.24	<0.001**
Shoulder internal rotation torque efficiency (Nm/ball speed)	1.49 ± 0.22	1.53 ± 0.22	0.032*

*p<0.05, **p<0.01; data are mean ± SD.