Based on 88 eligible observational studies , level of evidence grading and quantitative meta-analyses indicated that there is limited available evidence that the total volume or patterns of sedentary behaviour are associated with health in children and adolescents when accounting for moderate-intensity to vigorous-intensity physical activity or focusing on studies with low risk of bias .
Quality evidence from studies with robust design s and methods , objective measures of sitting , examining associations for various health outcomes , is needed to better underst and if the overall volume or patterns of sedentary behaviour are independent determinants of health in children and adolescents
Sedentary behaviour has emerged as a unique determinant of health in adults .
Studies in children and adolescents have been less consistent .
We review ed the evidence to determine if the total volume and patterns ( i.e. breaks and bouts ) of objective ly measured sedentary  behaviour  were associated with adverse health outcomes in young people , independent of moderate-intensity to vigorous-intensity physical activity .
The prevalence of sedentary behavior and physical activity in leisure time: A study of Scottish adolescents using ecological momentary assessment.
OBJECTIVE To report time and prevalence of leisure time sedentary and active behaviors in adolescents . METHOD Cross-sectional , stratified , r and om sample from schools in 14 districts in Scotl and , 2002 - 03 , using ecological momentary assessment ( n=385 boys , 606 girls ; mean age 14.1 years ; range 12.6 - 16.7 years ) . This is a method of capturing current behavioral episodes . We used 15 min time intervals . RESULTS  Television viewing  occupied the most leisure time . The five most time consuming sedentary activities occupied 228 min per weekday and 396 min per weekend day for boys , and 244 min per weekday and 400 min per weekend day for girls , with TV occupying one-third to one-half of this time . In contrast , 62 min was occupied by active transport and sports/exercise per weekday and 91 min per weekend day for boys , with 55 min per weekday and 47 min per weekend day for girls . A minority watched more than 4 h of TV per day , with more at weekends . Other main sedentary behaviors for boys were homework , playing computer/video games , and motorised transport and , for girls , homework , motorised transport , and sitting and talking . CONCLUSION Scottish adolescents engage in a variety of sedentary and active behaviors . Research into sedentary behavior must assess multiple behaviors and not rely solely on TV viewing
Based on 88 eligible observational studies , level of evidence grading and quantitative meta-analyses indicated that there is limited available evidence that the total volume or patterns of sedentary behaviour are associated with health in children and adolescents when accounting for moderate-intensity to vigorous-intensity physical activity or focusing on studies with low risk of bias .
Quality evidence from studies with robust design s and methods , objective measures of sitting , examining associations for various health outcomes , is needed to better underst and if the overall volume or patterns of sedentary behaviour are independent determinants of health in children and adolescents
Sedentary behaviour has emerged as a unique determinant of health in adults .
Studies in children and adolescents have been less consistent .
We review ed the evidence to determine if the total volume and patterns ( i.e. breaks and bouts ) of objective ly measured sedentary  behaviour  were associated with adverse health outcomes in young people , independent of moderate-intensity to vigorous-intensity physical activity .