Table 3.

Motion of the Dominant and Nondominant Glenohumeral Joint by Biological Age

Motion, °	Side	APHV Group, Mean ± SD
		4a	3b	2c
Internal range of motion	Dominant	78 ± 9d,e	69 ± 9	66 ± 9
	Nondominantf	81 ± 9	76 ± 9	74 ± 11
External range of motion	Dominant	84 ± 9	85 ± 10	83 ± 10
	Nondominantg	83 ± 6	83 ± 11	79 ± 12
Total arc of motion	Dominant	161 ± 13h	153 ± 15	149 ± 16
	Nondominantf	163 ± 13	158 ± 15	154 ± 17
Internal range of motion side-to-side asymmetry		5 ± 11	8 ± 9	8 ± 10

Abbreviation: APHV, age at peak height velocity.

^aAPHV-4 consisted of players who were more than 4 years from their APHV.

^bAPHV-3 consisted of players who were between 3 and 4 years from their APHV.

^cAPHV-2 consisted of players who were close to 2 years from their APHV.

^dDifference between APHV-4 and APHV-3 groups (P ≤ .01).

^eDifference between APHV-4 and APHV-2 groups (P ≤ .001).

^fBilateral difference (P ≤ .001).

^gBilateral difference (P ≤ .05).

^hDifference between groups APHV-4 and APHV-2 (P ≤ .01).