Physical fitness and throwing speed in U13 versus U15 male handball players

Table 2 Descriptive variables of handball players according to their age

	U13	U15	Age	Effect size
Age (years)	13.0 ± 0.6	14.9 ± 0.5	288.4 (< 0.001)	3.42 (4.02; 2.83)
Body height (cm)	162.0 ± 7.8	172.2 ± 7.1	43.1 (< 0.001)	1.32 (1.76; 0.89)
Body mass (kg)	54.9 ± 11.7	63.6 ± 10.9	14.0 (< 0.001)	0.75 (1.16; 0.34)
APHV (years)	14.0 ± 0.6	14.4 ± 0.6	9.2 (0.003)	0.61 (1.02; 0.21)
MO (years)	− 1.0 ± 0.7	0.6 ± 0.8	104.8 (< 0.001)	2.06 (2.54; 1.59)

One-way independent measures ANOVAs with Age as between subject factor
ANOVA main effects (Age) are presented as F values (p). Effect sizes were calculated as Hedge’s g. Positive effect sizes denote that U15 showed better performances than U13. Effect sizes were presented as means (95% confidence intervals)
U13 = under 13 years; U15 = under 15 years; APHV = age at peak height velocity; MO = maturity offset; cm = centimeters; kg = kilograms

ISSN: 2052-1847