. 2021 May 14;9:641353. doi: 10.3389/fped.2021.641353

Table 2.

Correlations and partial correlations between skeletal age, chronological age, and body size, physical fitness in children aged 3–6 years old.

	SA		CA		Height (cm)	Weight (kg)	BMI (kg/m²)
	r	r_partial-H&W	r	r_partial-H&W
Male (n = 509)
Height (cm)	0.735^**	–	0.777^**	–	–	–	–
Weight (kg)	0.629^**	–	0.621^**	–	0.778^**	–	–
BMI (kg/m²)	0.096^*	0.078	−0.046	0.112^*	0.069	0.672^**	–
Sit and reach (cm)	−0.0193^**	0.012	−0.244^**	−0.063	−0.259^**	−0.138^**	0.084
2 × 10 m SRT (s)	−0.427^**	−0.062	−0.640^**	−0.419^**	−0.514^**	−0.341^**	0.047
Standing long jump (cm)	0.508^**	0.137^**	0.641^**	0.405^**	0.553^**	0.363^**	−0.057
Tennis ball throw (m)	0.382^**	−0.006	0.580^**	0.287^**	0.524^**	0.411^**	0.044
5 m jump on both feet (s)	−0.306^**	−0.033	−0.513^**	−0.306^**	−0.368^**	−0.288^**	−0.035
Balance beam walk (s)	−0.266^**	−0.039	−0.479^**	−0.303^**	−0.319^**	−0.209^**	0.034
Female (n = 436)
Height (cm)	0.668^**	–	0.801^**	–	–	–	–
Weight (kg)	0.606^**	–	0.652^**	–	0.764^**	–	–
BMI (kg/m²)	0.153^*	0.04	0.016	0.129^*	0.014	0.651^**	–
Sit and reach (cm)	−0.013	−0.065	0.043	0.002	0.026	0.05	0.050
2 × 10 m SRT (s)	−0.486^**	−0.118^*	−0.622^**	−0.348^**	−0.565^**	−0.419^**	0.002
Standing long jump (cm)	0.458^**	0.125^**	0.645^**	0.416^**	0.576^**	0.396^**	−0.047
Tennis ball throw (m)	0.428^**	−0.011	0.659^**	0.345^**	0.579^**	0.457^**	0.031
5 m jump on both feet (s)	−0.225^**	0.000	−0.405^**	−0.232^**	−0.305^**	−0.239^**	−0.010
Balance beam walk (s)	−0.269^**	−0.027	−0.467^**	−0.220^**	−0.310^**	−0.248^**	−0.013

CA, chronological age; SA, skeletal age; BMI, body mass index; SRT, shuttle run test; partial-H&W, partial-Height & Weight.

p < 0.05,

^**

p < 0.01.