Table 1.

Descriptive characteristics of the study sample.

		All		Boys		Girls
	N	Mean ± SD	N	Mean ± SD	N	Mean ± SD
Age (years)	173	9.7 ± 0.3	86	9.7 ± 0.3	87	9.6 ± 0.3
Weight (kg)	173	33.2 ± 6.6	86	33.2 ± 7.1	87	33.2 ± 6.1
Height (cm)	173	137.7 ± 5.6	86	137.9 ± 5.8	87	137.4 ± 5.4
Body mass index (kg/m2)	173	17.4 ± 2.6	86	17.3 ± 2.7	87	17.5 ± 2.6
Body fat percentage (%)	173	18.7 ± 7.3	86	16.1 ± 5.1	87	21.3 ± 8.2
Fat-free mass (kg)	172	59.4 ± 5.8	85	61.3 ± 3.8	87	57.5 ± 6.8
Weight status (%) *:
Normal weight	126	72.8%	63	73.3%	63	72.4%
Overweight/Obese	47	27.2%	23	26.7%	24	27.6%
Diet:
Mediterranean dietary pattern	130	5.9 ± 1.6	63	6.1 ±1.6	67	5.8 ±1.7
Breakfast quality index	175	3.9 ± 1.1	86	3.9 ± 1.2	89	3.8 ± 1.0
Physical fitness:
Cardiorespiratory fitness (laps)	172	39.5 ± 20.3	84	48.5 ± 21.6	88	31.1 ± 14.6
Upper-limbs muscular strength (kg)	173	15.1 ± 3.0	85	15.7 ± 3.4	88	14.6 ± 2.5
Lower-limbs muscular strength (cm)	172	134.5 ± 19.8	84	141.0 ± 19.4	88	128.2 ± 18.6
Speed–agility (sec)	172	12.3 ± 0.8	84	12.0 ± 0.7	88	12.6 ± 0.8
Physical activity (min/day) †:
Moderate-to-vigorous physical activity	161	117.6 ± 28.8	79	121.0 ± 27.5	82	114.9 ± 29.6
Wearing time (awake)	161	828.3 ± 41.6	79	831.3 ± 43.1	82	825.2 ± 40.4

SD = Standard deviation. Weight status was presented as frequency and percentage. The rest of the sections were presented as mean ± standard deviation. * Classified according to Cole et al. [17]. ^† Classified according to Chandler et al. [24] cut-off points for non-dominant wrist.