No significant associations between screen time with blood pressure and cholesterol were reported .
Sedentary behaviour appears to be associated with  adiposity in adolescents , irrespective of dietary intake .
Screen time , but not overall sedentary behaviour , is consistently related to cardiometabolic health in adolescents .
Because of the associations screen time has with dietary intake , diet may be an important factor in the screen time and health relationship ; however , evidence has not previously been synthesized .
Thus , the aim of this systematic review was to explore whether the associations between various sedentary behaviours and cardiometabolic risk markers are independent of dietary intake in adolescents .
Energy intake and expenditure during sedentary screen time and motion-controlled video gaming.
BACKGROUND Television watching and playing of video games ( VGs ) are associated with higher energy intakes . Motion-controlled video games ( MC ) may be a healthier alternative to sedentary screen-based activities because of higher energy expenditures , but little is known about the effects of these games on energy intakes . OBJECTIVE Energy intake , expenditure , and surplus ( intake - expenditure ) were compared during sedentary ( television and VG ) and active ( MC ) screen-time use . DESIGN Young adults ( n = 120 ; 60 women ) were r and omly assigned to the following 3 groups : television watching , playing traditional VGs , or playing MCs for 1 h while snacks and beverages were provided .  Energy intakes , energy expenditures , and appetites were measured . RESULTS Intakes across these 3 groups showed a trend toward a significant difference ( P = 0.065 ) . The energy expenditure ( P < 0.001 ) was higher , and the energy surplus ( P = 0.038 ) was lower , in MC than in television or VG groups . All conditions produced a mean ( ±SD ) energy surplus as follows : 638 ± 408 kcal in television , 655 ± 533 kcal in VG , and 376 ± 487 kcal in MC groups . The OR for consuming ≥500 kcal in the television compared with the MC group was 3.2 ( 95 % CI : 1.2 , 8.4 ) . Secondary analyses , in which the 2 sedentary conditions were collapsed , showed an intake that was 178 kcal ( 95 % CI : 8 , 349 kcal ) lower in the MC condition than in the sedentary groups ( television and VG ) . CONCLUSION MCs may be a healthier alternative to sedentary screen time because of a lower energy surplus , but the playing of these games still result ed in a positive energy balance . This trial was registered at clinical trials.gov as NCT01523795
No significant associations between screen time with blood pressure and cholesterol were reported .
Sedentary behaviour appears to be associated with  adiposity in adolescents , irrespective of dietary intake .
Screen time , but not overall sedentary behaviour , is consistently related to cardiometabolic health in adolescents .
Because of the associations screen time has with dietary intake , diet may be an important factor in the screen time and health relationship ; however , evidence has not previously been synthesized .
Thus , the aim of this systematic review was to explore whether the associations between various sedentary behaviours and cardiometabolic risk markers are independent of dietary intake in adolescents .