科研之友
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摘要
Background: The effects of regular physical activity on energy intake in obese adolescents are unknown. Objective: The objective is to determine how physical activity interventions affect energy and macronutrient intake in overweight/obese youth. Data sources: Databases were searched from December 2014 to December 2015 for studies that measured energy and/or macronutrient consumption in response to physical activity intervention in overweight/obese youth. Data selection: The review comprises primary source articles published in English in peer-reviewed journals. Articles that presented data on energy and/or macronutrient intake before and after a physical activity intervention (without dietary restriction) in overweight or obese children and teenagers (up to 18 years old) were included. Of the initial 307 references found, nine were included. Results: The nine included studies analysed the effect of 15 different physical activity interventions. Nine showed a decrease and six unchanged energy intakes. The effect size for total energy intake ranged from -2.108 to -0.207 (n=14). Results of the meta-analysis revealed a mean effect of physical intervention to reduce intake of -1.003 (95% confidence interval=-1.261 to -0.745, p<0.001). Results for heterogeneity among these studies were I-2=67.421; Q=39.903; d(f)=13, p<0.001. The mean energy intake reduction was -323-286 kcal. Macronutrient intake was assessed in 11 interventions. Protein intake was found decreased in five (reduction of -26.8-19.2 g), seven reported fat decrease (reduction of -26.4-17.8 g) and five a decrease in CHO (reduction of -72.5-22.8 g). The meta-analysis revealed significant decreases of each macronutrient (p<0.001). Conclusion: Structured physical activity interventions favour decreased daily energy intake in obese adolescents.
- 出版日期2017-6
