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?

Table 3 Correlation coefficients (r or r_s) for correlation between duration of time spent on sleeping, selected categories of activities, daily energy expenditure (DEE) and BMI-for-age

	Girls (n = 227)	Boys (n = 238)
Sleeping duration (hours/day)	0.02	0.01
Sedentary and sport activities during school period
Screen time viewing (hours/week)	0.01	0.06
-Watching TV (hours/week)	0.01	0.09
-Videogames/Internet (hours/week)	−0.03	−0.03
Listening to music/reading (hours/week)	−0.04	0.01
Sport activities (hours/week)	0.02	−0.09
Sedentary and sport activities during vacation period
Screen time viewing (hours/week)	0.06	0.07
-Watching TV (hours/week)	0.07	0.09
-Videogames/Internet (hours/week)	0.04	0.03
Listening to music/reading (hours/week)	0.06	0.02
Sport activities (hours/week)	0.03	−0.03
DEE during school period per kg body weight (kcal/kg.day)	0.04	−0.14*
DEE during vacation period per kg body weight (kcal/kg.day)	0.04	−0.06
DEE total year per kg body weight (kcal/kg.day)	0.04	−0.11

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