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Longitudinal analysis of sleep in relation to BMI and body fat in children: the FLAME study

唐唐添加于 2011-5-31 05:06 | 1388 次阅读 | 0 个评论

作者
Carter PJ, Taylor BJ, Williams SM, Taylor RW
摘要
Objectives To determine whether reduced sleep is associated with differences in body composition and the risk of becoming overweightin young children.Design Longitudinal study with repeated annual measurements.Setting Dunedin, New Zealand.Participants 244 children recruited from a birth cohort and followed from age 3 to 7.Main outcome measures Body mass index (BMI), fat mass (kg), and fat free mass (kg) measured with bioelectrical impedance; dual energy x ray absorptiometry;physical activity and sleep duration measured with accelerometry; dietary intake (fruit and vegetables, non-core foods), televisionviewing, and family factors (maternal BMI and education, birth weight, smoking during pregnancy) measured with questionnaire.Results After adjustment for multiple confounders, each additional hour of sleep at ages 3-5 was associated with a reduction in BMI of 0.48 (95% confidence interval 0.01 to 0.96) and a reduced risk of being overweight (BMI ≥85th centile) of 0.39 (0.24 to 0.63) at age 7. Further adjustment for BMI at age 3 strengthened these relations. These differences in BMI were explained by differences in fat mass index (?0.43, ?0.82 to ?0.03) more than by differences in fat free mass index (?0.21, ?0.41 to ?0.00).Conclusions Young children who do not get enough sleep are at increased risk of becoming overweight, even after adjustment for initialweight status and multiple confounding factors. This weight gain is a result of increased fat deposition in both sexes ratherthan additional accumulation of fat free mass.
详细资料
- 文献种类:期刊
- 期刊名称: BMJ
- 期刊缩写: BMJ
- 期卷页: 2011年第342卷第may26 2期 d2712-d2712页
- ISBN: 0959-8138
所属群组

生物综合 医学综合
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