Is Self-Administered Rating Scale for Pubertal Development a Predictor of Countermovement Jump in Young Soccer Players?

Table 5: Stepwise multiple linear regression analyses for the assessment of determinants of CMJ performance.

Model (subjects)	R	Adj R²	p	Predictors’ coefficients
All	0.653	0.409	<0.001	constant = 20.165 sub-catecory = 1.269 PDS = 1.921%BF = -0.183
Giovanissimi	0.489	0.213	<0.001	constant = 22.297 sub-category = 2.236%BF = -0.210
Allievi	0.458	0.184	0.007	constant = 18.229 PDS = 3.848
Juniores	0.236	-0.012	0.383	constant = 33.648%BF = -0.165

Note: % BF = percentage of body fat PDS = pubertal development scale
Sub-category = 3 of Giovanissimi (“A”, “B” and “ C”) and 2 of Allievi (“A” and “B”)