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Table 2 Descriptive statistics of duration of time spent by high school students on selected activities and their daily energy expenditure (DEE)

From: Are physical activity, sedentary behaviors and sleep duration associated with body mass index-for-age and health-related quality of life among high school boys and girls?

  Girls
(n = 227)
Boys
(n = 238)
P value
Sleeping (hours/day) 8.16 ± 1.27* 7.73 ± 1.22 <0.001**
Sedentary and sport activities during school period  
Screen time viewing (hours/week) 10.44 ± 6.5 12.87 ± 6.35 <0.001**
-Watching TV (hours/week) 7.39 ± 4.45 8.36 ± 4.14 0.015**
-Videogames/Internet (hours/week) 1.5(0.5-3.8) 3.5(1.0-6.4) <0.001**
Listening to music/reading (hours/week) 9.62 ± 6.49 8.58 ± 6.62 0.087
Sport (hours/week) 1.0(0–2.3) 3.0(1.0-5.0) <0.001**
Sedentary and sport activities during vacation period  
Screen time viewing (hours/week) 15.87 ± 7.63 17.95 ± 7.32 0.003**
-Watching TV (hours/week) 10.5(6.0-14.0) 10.5(7.0-14.0) 0.789
-Videogames/Internet (hours/week) 6.26 ± 5.11 8.18 ± 4.96 <0.001**
Listening to music/reading (hours/week) 13.02 ± 6.65 8.86 ± 6.48 <0.001**
Sport (hours/week) 3.74 ± 3.77 5.86 ± 4.30 <0.001**
Daily energy expenditure  
DEE during school period (kcal/day) 1853(1543–2252) 2280(1863–2880) <0.001**
DEE during vacation period (kcal/day) 1244(995–1660) 1594(1219–2199) <0.001**
DEE total year (kcal/day) 1660(1402–2061) 2113(1673–2710) <0.001**
DEE during school period per kg body weight (kcal/kg.day) 31.0(28.1-35.3) 31.8(28.2-40.9) 0.020**
DEE during vacation period per kg body weight (kcal/kg.day) 20.8(17.8-26.1) 23.1(17.7-32.3) 0.037**
DEE total year per kg body weight (kcal/kg.day) 28.0(25.1-32.6) 29.1(25.4-38.0) 0.003**
  1. *Data are presented as mean ± sd or median (IQR)
  2. **p < 0.05