Table 2. Comparison between light and heavy weight balls in angular velocities (degree/sec).

		Light weight ball	Heavy weight ball	p-value
Stride foot contact
	Elbow extension	−204.1 ± 208.1	−208.6 ± 217.8	0.893
	Shoulder abduction	133.4 ± 143.9	134.8 ± 150.3	0.929
	Shoulder horizontal adduction	138.8 ± 186.0	142.3 ± 189.5	0.016*
	Shoulder external rotation	752.4 ± 293.1	762.1 ± 265.3	0.771
	Trunk rotation	96.2 ± 98.8	87.2 ± 105.9	0.496
	Trunk forward tilt	91.6 ± 55.5	96.5 ± 57.3	0.258
	Trunk lateral tilt	−148.4 ± 64.2	−151.1 ± 62.0	0.636
Maximum external rotation
	Elbow extension	1,212.1 ± 362.7	1,176.5 ± 393.7	0.400
	Shoulder abduction	−82.1 ± 141.0	−84.9 ± 147.7	0.867
	Shoulder horizontal adduction	205.2 ± 116.2	198.0 ± 123.7	0.896
	Shoulder external rotation	−4.8 ± 22.0	−5.1 ± 25.8	0.961
	Trunk rotation	−468.1 ± 136.0	−488.7 ± 128.1	0.097
	Trunk forward tilt	242.4 ± 50.4	240.0 ± 55.3	0.635
	Trunk lateral tilt	−159.4 ± 80.0	−157.0 ± 78.2	0.586
Ball release
	Elbow extension	960.4 ± 472.6	1,056.1 ± 484.7	0.186
	Shoulder abduction	109.9 ± 166.2	96.9 ± 161.1	0.281
	Shoulder horizontal adduction	−7.8 ± 196.9	−19.1 ± 195.4	0.443
	Shoulder external rotation	−4,051.0 ± 1,032.6	−3,800.2 ± 1046.4	0.036*
	Trunk rotation	−116.6 ± 117.8	−74.8 ± 167.0	0.269
	Trunk forward tilt	217.5 ± 55.1	233.3 ± 101.2	0.448
	Trunk lateral tilt	−193.9 ± 55.7	−204.8 ± 78.4	0.269
Maximum value
	Elbow extension	2,042.9 ± 281.1	2,012.6 ± 269.2	0.280
	Shoulder abduction	373.4 ± 165.7	384.4 ± 172.7	0.429
	Shoulder horizontal adduction	433.3 ± 115.5	440.8 ± 215.9	0.650
	Shoulder external rotation	−4,634.5 ± 1,032.6	−4,517.5 ± 124.4	0.195
	Trunk rotation	−504.5 ± 136.6	−530.7 ± 119.7	0.028*
	Trunk forward tilt	259.7 ± 52.1	277.2 ± 93.7	0.397
	Trunk lateral tilt	−219.2 ± 59.8	−229.1 ± 76.2	0.306

*p<0.05; data are mean ± SD.