Screen time and childhood overweight/obesity: A systematic review and meta‐analysis

2019 ◽  
Vol 45 (5) ◽  
pp. 744-753 ◽  
Author(s):  
Kehong Fang ◽  
Min Mu ◽  
Kai Liu ◽  
Yuna He
2016 ◽  
Vol 52 (5) ◽  
pp. 314-321 ◽  
Author(s):  
Katherine L Downing ◽  
Jill A Hnatiuk ◽  
Trina Hinkley ◽  
Jo Salmon ◽  
Kylie D Hesketh

Aim or objectiveTo evaluate the effectiveness of behavioural interventions that report sedentary behaviour outcomes during early childhood.DesignSystematic review and meta-analysis.Data sourcesAcademic Search Complete, CINAHL Complete, Global Health, MEDLINE Complete, PsycINFO, SPORTDiscus with Full Text and EMBASE electronic databases were searched in March 2016.Eligibility criteria for selecting studiesInclusion criteria were: (1) published in a peer-reviewed English language journal; (2) sedentary behaviour outcomes reported; (3) randomised controlled trial (RCT) study design; and (4) participants were children with a mean age of ≤5.9 years and not yet attending primary/elementary school at postintervention.Results31 studies were included in the systematic review and 17 studies in the meta-analysis. The overall mean difference in screen time outcomes between groups was −17.12 (95% CI −28.82 to −5.42) min/day with a significant overall intervention effect (Z=2.87, p=0.004). The overall mean difference in sedentary time between groups was −18.91 (95% CI −33.31 to −4.51) min/day with a significant overall intervention effect (Z=2.57, p=0.01). Subgroup analyses suggest that for screen time, interventions of ≥6 months duration and those conducted in a community-based setting are most effective. For sedentary time, interventions targeting physical activity (and reporting changes in sedentary time) are more effective than those directly targeting sedentary time.Summary/conclusionsDespite heterogeneity in study methods and results, overall interventions to reduce sedentary behaviour in early childhood show significant reductions, suggesting that this may be an opportune time to intervene.Trial registration numberCRD42015017090.


2019 ◽  
Vol 95 (2) ◽  
pp. 155-165
Author(s):  
Camila W. Schaan ◽  
Felipe V. Cureau ◽  
Mariana Sbaraini ◽  
Karen Sparrenberger ◽  
Harold W. Kohl III ◽  
...  

Author(s):  
Chao Li ◽  
Gang Cheng ◽  
Tingting Sha ◽  
Wenwei Cheng ◽  
Yan Yan

Evidence suggests that excessive screen time in early childhood is related to children’s physical and mental health. This study aimed to review the relationships between screen media use and several health indicators in infants, toddlers, and preschoolers. A systematic search was conducted by two independent reviewers on PubMed, Web of Science, Embase, and Cochrane Library to identify the eligible studies, with an end date of 13 August 2019. Included studies (published in English) were peer-reviewed and met the determinate population (children aged 0–7 years with screen media exposure and related health outcomes). The AHRQ, NOS, and the Cochrane Handbook were used to evaluate the cross-sectional study, cohort study, and RCT, respectively. A meta-analysis and narrative syntheses were employed separately. Eighty studies (23 studies for meta-analysis) met the inclusion criteria for the systematic review. Strong evidence of the meta-analysis suggested that excessive screen time was associated with overweight/obesity and shorter sleep duration among toddlers and preschoolers. Excessive screen use was associated with various health indicators in physical, behavioral, and psychosocial aspects. Better-quality research on newer media devices, on various kinds of contents in young children, and on dose–response relationships between excessive screen use and health indicators are needed to update recommendations of screen use.


2012 ◽  
Vol 97 (12) ◽  
pp. 1019-1026 ◽  
Author(s):  
Stephen Franklin Weng ◽  
Sarah A Redsell ◽  
Judy A Swift ◽  
Min Yang ◽  
Cristine P Glazebrook

ObjectiveTo determine risk factors for childhood overweight that can be identified during the first year of life to facilitate early identification and targeted intervention.DesignSystematic review and meta-analysis.Search strategyElectronic database search of MEDLINE, EMBASE, PubMed and CAB Abstracts.Eligibility criteriaProspective observational studies following up children from birth for at least 2 years.ResultsThirty prospective studies were identified. Significant and strong independent associations with childhood overweight were identified for maternal pre-pregnancy overweight, high infant birth weight and rapid weight gain during the first year of life. Meta-analysis comparing breastfed with non-breastfed infants found a 15% decrease (95% CI 0.74 to 0.99; I2=73.3%; n=10) in the odds of childhood overweight. For children of mothers smoking during pregnancy there was a 47% increase (95% CI 1.26 to 1.73; I2=47.5%; n=7) in the odds of childhood overweight. There was some evidence associating early introduction of solid foods and childhood overweight. There was conflicting evidence for duration of breastfeeding, socioeconomic status at birth, parity and maternal marital status at birth. No association with childhood overweight was found for maternal age or education at birth, maternal depression or infant ethnicity. There was inconclusive evidence for delivery type, gestational weight gain, maternal postpartum weight loss and ‘fussy’ infant temperament due to the limited number of studies.ConclusionsSeveral risk factors for both overweight and obesity in childhood are identifiable during infancy. Future research needs to focus on whether it is clinically feasible for healthcare professionals to identify infants at greatest risk.


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