Table 1.

Some of the characteristics of the sample population, separated by sex

	All (n = 596)	Boys (n = 308)	Girls (n = 288)	p-value
Anthropometric Measurements
Age (years)	13.1 ± 1.3	13.1 ± 1.3	13.0 ± 1.3	0.498
Weight (kg)	54.6 ± 17.8	55.0 ± 20.0	54.2 ± 15.0	0.561
Height (m)	1.57 ± 0.09	1.58 ± 0.10	1.55 ± 0.64	0.038
BMI z-score	0.50 ± 1.33	0.35 ± 1.47	0.66 ± 1.15	0.005
Waist circumference (cm)	72.5 ± 11.6	73.5 ± 12.0	71.5 ± 10.9	0.029
Waist-hip ratio	0.81 ± 0.06	0.83 ± 0.05	0.78 ± 0.06	< 0.001
Blood Pressure and Biochemical Measurements
Systolic blood pressure (mmHg)	114.9 ± 16.6	118.1 ± 19.3	111.5 ± 12.3	< 0.001
Diastolic blood pressure (mmHg)	72.0 ± 14.0	72.6 ± 16.3	71.4 ± 11.0	0.281
Glucose (mmol/L)	5.2 ± 0.4	5.24 ± 0.39	5.16 ± 0.43	0.021
Triglycerides (mmol/L)	0.79 ± 0.38	0.79 ± 0.42	0.78 ± 0.32	0.926
Cholesterol (mmol/L)	4.1 ± 0.7	4.0 ± 0.7	4.1 ± 0.7	0.122
HDL (mmol/L)	1.23 ± 0.29	1.21 ± 0.30	1.25 ± 0.28	0.111
LDL (mmol/L)	2.66 ± 0.64	2.64 ± 0.65	2.69 ± 0.62	0.357

Values are reported as the mean ± SD

T-tests were performed to detect differences in means between boys and girls. Significance was set at a p-value < 0.05