There is a large body of evidence from all study design s which suggests that decreasing any type of sedentary time is associated with lower health risk in youth aged 5 - 17 years .
In particular , the evidence suggests that daily TV viewing in excess of 2 hours is associated with reduced physical and psychosocial health , and that lowering sedentary time leads to reductions in BMI
Accumulating evidence suggests that , independent of physical activity levels , sedentary behaviours are associated with increased risk of cardio-metabolic disease , all-cause mortality , and a variety of physiological and psychological problems .
Therefore , the purpose of this systematic review is to determine the relationship between sedentary behaviour and health indicators in school-aged children and youth aged 5 - 17 years .
Overweight and obesity related to activities in Portuguese children, 7-9 years.
BACKGROUND The purpose of the study was to explore the association among the following variables : physical activity , TV , videogames , and obesity . The study included a Portuguese r and om nationally representative sample of 3365 children ( 1610 girls and 1755 boys ) 7 - 9 year olds . METHODS A general question naire was completed by the parents of participating children to provide information about the hours spent per week watching television , computer use and electronic games , and the participation in physical education .  Overweight and obesity were calculated by using the body mass index ( BMI ) assessment and the cut-off points for overweight ( 25 kg/m(2 ) ) and obesity ( 30 kg/m(2 ) ) . RESULTS The data from the association between BMI and the independent variables ( analysis of variance ) were only significant for time playing electronic games for boys and girls ( P < 0.001 ; P < 0.029 ) . The association between hours of watching TV and BMI was significant only for boys ( P < 0.016 ) . The results from the logistic regression were only significant for electronic games both for boys and girls ( P < 0.000 ; P < 0.000 ) . CONCLUSIONS The results of this study suggest that the time spent playing electronic games is associated with obesity . Reducing childhood obesity calls for the reduction in sedentary behaviours , and the promotion of a more active lifestyle
There is a large body of evidence from all study design s which suggests that decreasing any type of sedentary time is associated with lower health risk in youth aged 5 - 17 years .
In particular , the evidence suggests that daily TV viewing in excess of 2 hours is associated with reduced physical and psychosocial health , and that lowering sedentary time leads to reductions in BMI
Accumulating evidence suggests that , independent of physical activity levels , sedentary behaviours are associated with increased risk of cardio-metabolic disease , all-cause mortality , and a variety of physiological and psychological problems .
Therefore , the purpose of this systematic review is to determine the relationship between sedentary behaviour and health indicators in school-aged children and youth aged 5 - 17 years .