Table 1.

Participants' characteristics (mean ± SD) and physical activity levels (%).

Variables	All (n = 866)	Female (n = 412)	Male (n = 454)	p value
Age (years)	14.4 ± 1.8	14.3 ± 1.7	14.6 ± 1.8	0.010
Body mass (kg)	55.6 ± 12.8	53.3 ± 11.0	57.6 ± 14.0	< 0.001
Stature (m)	1.61 ± 0.1	1.57 ± 0.7	1.64 ± 0.1	< 0.01
Body mass index (kg/m2)	21.3 ± 3.7	21.4 ± 3.8	21.2 ± 3.7	N.S.
Sedentary	4.4%	6%	3%	< 0.001
Low active	37.8%	47%	29%
Moderate active	47.1%	42%	52%
Very active	10.7%	5%	16%