Table 1.

Within-group correlation between anthropometrics and sprint/agility performance in 10- to 12-, 13- to 14-, and 15- to 16-year-old male soccer players (Pearson’s r [R²])

Anthropometry	Sprint/agility	10–12 years	13–14 years	15–16 years
Body height	10 m	0.04 (0.00)	0.50 (0.25)**	0.24 (0.06)
	20 m	0.13 (0.02)	0.52 (0.27)**	0.38 (0.14)*
	10–20 m	0.23 (0.05)	0.50 (0.25)**	0.45 (0.20)**
	Agility	0.27 (0.07)	0.28 (0.10)*	0.11 (0.01)
Body mass	10 m	0.06 (0.00)	0.35 (0.12)*	0.25 (0.06)
	20 m	0.12 (0.01)	0.27 (0.07)	0.33 (0.11)*
	10–20 m	0.30 (0.09)*	0.15 (0.02)	0.35 (0.12)*
	Agility	0.25 (0.06)	0.00 (0.01)	0.06 (0.00)

Notes:

^*Correlation is significant at the 0.05 level (two-tailed);

^**correlation is significant at the 0.01 level (two-tailed).