Table 1.

Descriptive characteristics of 457 participants included in the final analyses

Demographic characteristics	All N = 457	Boys N = 218	Girls N = 262	p
Age (years) Mean (SD)	14.3 (0.3)	14.3 (0.3)	14.3 (0.3)	0.11
BMI Z-score (kg · m-2) Mean (SD)	0.37 (1.2)	0.29 (1.19)	0.43 (1.22)	0.25
Weight status N (% overweight / obese)	96 (21.0)	38 (18.3)	58 (23.3)	0.19
Parent education N (%)				0.04
Low	179 (39.2)	71 (34.1)	108 (43.4)
High	278 (60.8)	137 (65.9)	141 (56.6)
Objective physical activity	All N = 410	Boys N = 192	Girls N = 218	p
MVPA (min · d-1) Mean (SD)	62.8 (24.7)	67.3 (25.6)	58.8 (23.2)	<0.001
Meeting PA Guidelines N (% meeting guideline)	248 (54.3)	126 (60.6)	122 (49.0)	0.013

Students T-test of chi-squared tests used to assess sex differences.

MVPA moderate and vigorous physical activity.

Meeting PA Guidelines defined as ≥ 60 minutes per day of MVPA (≥2000 accelerometry counts per minute).