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 .
Screen time, cardiorespiratory fitness and adiposity among school-age children from Monteria, Colombia.
OBJECTIVES To explore the association between electronic media exposure ( television viewing time , personal computer/video game use , total screen time ) , and waist circumference and body mass index , and study whether this association is independent of cardiorespiratory fitness , in a representative sample of adolescents from Montería , Colombia . DESIGN Cross-sectional study analyzing data from 546 students aged 11 - 18 years , from fourteen r and omly selected schools .  Z-scores for WC and BMI were calculated . METHODS The physical activity module of the Global School Health Survey 2007 was used to determine EME , and the shuttle run test was used to assess CRF . Linear regression models adjusted by age , school location , physical activity level , type of institution ( public or private ) , consumption of sweetened beverages , fast food , and fried food were used . RESULTS Among boys , independently of cardiorespiratory fitness , high television viewing time ( ≥ 2 h/day ) ( β=+0.22 ; p<0.02 ) , was positively associated with waist circumference . High total screen time ( > 3h/day ) was positively associated with waist circumference ( β=+0.34 ; p<0.01 ) , and body mass index ( β=+0.39 ; p<0.01 ) . Among girls , sedentary behavior was not associated with adiposity , but cardiorespiratory fitness ( β=-0.04 ; p<0.02 ) was negatively associated with body mass index . CONCLUSIONS These findings support the evidence on the negative impact of excessive electronic media exposure and low cardiorespiratory fitness , and highlight the need for interventions and prevention strategies
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 .