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Table 1 Descriptive characteristics and weight status of the study sample

From: Is adherence to the 24-hour movement guidelines associated with a reduced risk of adiposity among children and adolescents?

  Total
N = 679
Children
n = 355
Adolescents
n = 324
p-valuec
Mean SD Mean SD Mean SD
Age (years) 13.9 2.8 11.7 1.6 16.3 1.3 < 0.001
Height (cm) 160.5 14.1 151.6 12.0 170.2 8.8 < 0.001
Weight (kg) 52.9 15.0 43.6 11.3 63.0 11.6 < 0.001
BMI z-score 0.22 1.06 0.24 1.13 0.20 0.99 0.587
Fat mass (%) 20.0 8.7 19.3 8.3 20.7 9.1 0.035
Visceral adipose tissue (cm2) 48.5 31.1 42.7 28.1 54.9 32.9 < 0.001
Weight statusa (% of n)
 Underweight 1.3   2.0   0.6   0.112
 Normal weight 76.3   73.5   79.3   0.076
 Overweight 17.1   17.2   17.0   0.945
 Obese 5.3   7.3   3.1   0.015
MVPA (min/day)b 49.1 23.9 58.1 24.3 39.3 19.1 < 0.001
ST (h/day) 3.0 2.0 3.0 1.8 2.8 2.1 0.206
SL (h/day)b 8.1 0.9 8.6 0.7 7.5 0.8 < 0.001
  1. BMI – body mass index, MVPA – moderate-to-vigorous physical activity, ST – screen time, SL – sleep
  2. aBased on the BMI z-score
  3. bAdjusted to 24 h
  4. cThe differences between age categories were analyzed with the independent t-test for continuous variables and the chi-square test for categorical variables