Sedentary behaviour continues to be associated with unhealthy diet in young people in mostly cross-sectional studies .
BACKGROUND Sedentary behaviour and its association with dietary intake in young people and adults are important topics and were systematic ally review ed in 2011 .
There is a need to up date this evidence given the changing nature of sedentary behaviour and continued interest in this field .
This review aims to assist research ers in better interpreting the diversity of findings concerning sedentary behaviour and weight status .
OBJECTIVE To provide an up date of the associations between sedentary behaviour and dietary intake across the lifespan .
Association of dietary habits with levels of physical activity and screen time among adolescents living in Saudi Arabia.
BACKGROUND Underst and ing the inter-relationships between lifestyle factors in youth is important with respect to the development of effective promotional programmes for healthy eating and active living . The present study aim ed to explore the associations of dietary habits ( DH ) with physical activity ( PA ) and screen time ( ST )  among Saudi adolescents aged between 15 and 19 years of age relative to gender . METHODS Data were obtained from the Arab Teens Lifestyle Study , a school-based multicentre lifestyle study conducted in 2009/2010 in three major cities in Saudi Arabia . A multistage stratified cluster r and om sampling technique was used . The number of participants with complete data for  DH  and  PA  was 2886 and the respective number for DH and ST was 2822 . Assessment included weight , height , body mass index , total daily ST ( television viewing , video/computer games and Internet use ) , PA and DH using self-reported question naires . RESULTS Females were significantly more sedentary and less active than males ( P < 0.001 ) . Two-way analysis of covariance , controlling for age , showed significant ( P < 0.05 ) gender by PA and gender by ST interactions for several DH . Logistic regression analyses revealed significant associations of higher PA with a higher consumption of fruit , vegetables , milk , French fries/potato chips and energy drinks , whereas higher ST was significantly associated with a higher consumption of sugar-sweetened drinks , fast foods , cake/doughnuts and energy drinks . CONCLUSIONS Healthful dietary habits were associated mostly with  PA  , whereas sedentary behaviours , independent of PA , negatively impacted upon eating behaviours . The low PA levels and high sedentary levels of Saudi females represent a great concern . The results reported in the present study have important implication s for both youth public health policies and intervention programmes
Sedentary behaviour continues to be associated with unhealthy diet in young people in mostly cross-sectional studies .
BACKGROUND Sedentary behaviour and its association with dietary intake in young people and adults are important topics and were systematic ally review ed in 2011 .
There is a need to up date this evidence given the changing nature of sedentary behaviour and continued interest in this field .
This review aims to assist research ers in better interpreting the diversity of findings concerning sedentary behaviour and weight status .
OBJECTIVE To provide an up date of the associations between sedentary behaviour and dietary intake across the lifespan .