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Table 2 Background characteristics of the sample (N = 314)a

From: Aerobic and strength exercises for youngsters aged 12 to 15: what do parents think?

  Parent Child
M (sd) M (sd)
Gender (Female:Male) 137:177 152:162
Age in years (SD) 45.8 (4.7) 13.4 (1.0)
Education level   
 Low (%) 70 (22.3) -
 Medium (%) 142 (45.2) -
 High (%) 102 (32.5) -
BMI (z) (SD)b 26.65 (4.51) −0.05 (1.32)
 Underweight (%) 4 (1.3) 36 (12.0)
 Normal-weight (%) 119 (37.9) 199 (66.3)
 Overweight (%) 128 (40.8) 36 (12.0)
 Obese (%) 63 (20.1) 29 (9.7)
Physical activity in min/week (SD) 168.5 (272.4) 319.1 (401.9)
 Aerobic exercise (%) 74 (38.5) 56 (24.1)
 Mostly aerobic (%) 70 (36.5) 102 (44.0)
 Both aerobic and strength (%) 38 (19.8) 62 (26.7)
 Mostly strength (%) 9 (4.7) 11 (4.7)
 Strength exercises (%) 1 (0.5) 1 (0.4)
 No physical activity (%) 122 (38.9) 82 (26.1)
  1. Note. 12 children had missing values for BMI/weight status; 2 children had an unrealistic BMI z-score (< −5) and were removed as advised by the WHO [28]
  2. Type of physical activity behaviour (ranging from aerobic exercise to strength exercise); percentages for type of exercise were calculated after removing the children that were not physically active (no sport); percentage from total sample was calculated for children that were not physically active (no sport)
  3. aAll values are N’s, unless otherwise indicated. b a BMI score was calculated for the parents; a BMI z-score was calculated for the youngsters