Associations between objective ly measured total sedentary time and indicators of adiposity and motor development were predominantly null .
Associations between screen time and indicators of adiposity , motor or cognitive development , and psychosocial health were primarily unfavourable or null .
Associations between time spent seated ( e.g. , in car seats or strollers ) or in the supine position , and indicators of adiposity and motor development , were primarily unfavourable or null .
Conclusions These findings continue to support the importance of minimizing screen time for disease prevention and health promotion in the early years , but also highlight the potential cognitive benefits of interactive non-screen-based sedentary behaviours such as reading and storytelling .
Background The purpose of this systematic review was to examine the relationships between  sedentary behaviour ( SB ) and health indicators in children aged 0 to 4 years , and to determine what doses of SB ( i.e. , duration , patterns [ frequency , interruptions ] , and type ) were associated with health indicators .
Early life risk factors for obesity in childhood: cohort study
Abstract Objective To identify risk factors in early life ( up to 3 years of age ) for obesity in children in the United Kingdom . Design Prospect i ve cohort study . Setting Avon longitudinal study of parents and children , United Kingdom . Participants 8234 children in cohort aged 7 years and a sub sample of 909 children ( children in focus ) with data on additional early growth related risk factors for obesity . Main outcome measures Obesity at age 7 years , defined as a body mass index 3 95th centile relative to reference data for the UK population in 1990 . Results Eight of 25 putative risk factors were associated with a risk of obesity in the final models : parental obesity ( both parents : adjusted odds ratio , 10.44 , 95 % confidence interval 5.11 to 21.32 ) , very early ( by 43 months ) body mass index or adiposity rebound ( 15.00 , 5.32 to 42.30 ) , more than eight hours spent watching television per week at age 3 years ( 1.55 , 1.13 to 2.12 ) , catch-up growth ( 2.60 , 1.09 to 6.16 ) , st and ard deviation score for weight at age 8 months ( 3.13 , 1.43 to 6.85 ) and 18 months ( 2.65 , 1.25 to 5.59 ) ; weight gain in first year ( 1.06 , 1.02 to 1.10 per 100 g increase ) ; birth weight , per 100 g ( 1.05 , 1.03 to 1.07 ) ; and short ( < 10.5 hours ) sleep duration at age 3 years ( 1.45 , 1.10 to 1.89 ) . Conclusion Eight factors in early life are associated with an increased risk of obesity in childhood
Associations between objective ly measured total sedentary time and indicators of adiposity and motor development were predominantly null .
Associations between screen time and indicators of adiposity , motor or cognitive development , and psychosocial health were primarily unfavourable or null .
Associations between time spent seated ( e.g. , in car seats or strollers ) or in the supine position , and indicators of adiposity and motor development , were primarily unfavourable or null .
Conclusions These findings continue to support the importance of minimizing screen time for disease prevention and health promotion in the early years , but also highlight the potential cognitive benefits of interactive non-screen-based sedentary behaviours such as reading and storytelling .
Background The purpose of this systematic review was to examine the relationships between  sedentary behaviour ( SB ) and health indicators in children aged 0 to 4 years , and to determine what doses of SB ( i.e. , duration , patterns [ frequency , interruptions ] , and type ) were associated with health indicators .