英国儿童的身体活动、久坐行为与肥胖
Physical activity, sedentary behavior, and adiposity in English children.
机构信息
Human Nutrition Research Centre, Newcastle University, Newcastle upon Tyne, UK.
出版信息
Am J Prev Med. 2012 May;42(5):445-51. doi: 10.1016/j.amepre.2012.01.007.
BACKGROUND
The importance of variation in total volume of physical activity or moderate- to vigorous-intensity physical activity (MVPA) to development of body fatness in childhood is unclear, and it is unclear if physical activity has a greater influence on adiposity in boys than girls.
PURPOSE
To assess relationships between 2-year changes in objectively measured physical activity, sedentary behavior, and adiposity in English children.
METHODS
Prospective cohort study, set in Northeast England, of a socioeconomically representative sample of 403 children. Measures were change in accelerometer-determined physical activity and sedentary behavior from age 7 to 9 years (data collected 2006/2007 and 2008/2009; analyzed in 2010) and concurrent change in adiposity (fat mass index derived from bioelectric impedance) and change in BMI Z-score.
RESULTS
Decline in MVPA was associated with a greater increase in fat mass index in boys but not girls. Declining MVPA was associated with increased BMI Z-score in boys but not girls. Increased sedentary behavior was not associated with increased BMI Z-score in either gender.
CONCLUSIONS
Avoiding mid-late childhood reductions in MVPA may reduce excessive fat gain, although such strategies may have greater impact on boys than girls.
背景
在儿童时期，总活动量或中等到剧烈强度的身体活动（MVPA）的变化对体脂肪积累的重要性尚不清楚，也不清楚身体活动对男孩和女孩的肥胖程度的影响是否更大。
目的
评估英国儿童身体活动、久坐行为和肥胖程度在 2 年内的变化关系。
方法
这是一项在英格兰东北部进行的前瞻性队列研究，对社会经济代表性的 403 名儿童进行了研究。测量指标为从 7 岁到 9 岁之间通过加速度计确定的身体活动和久坐行为的变化（数据于 2006/2007 年和 2008/2009 年收集，于 2010 年进行分析），以及同时发生的肥胖变化（身体阻抗法得出的脂肪质量指数）和 BMI Z 分数的变化。
结果
MVPA 的下降与男孩的脂肪质量指数增加更大有关，但与女孩无关。MVPA 的下降与男孩的 BMI Z 分数增加有关，但与女孩无关。久坐行为的增加与男孩和女孩的 BMI Z 分数增加均无关。
结论
避免中晚期儿童 MVPA 的减少可能会减少过多的脂肪增加，尽管这些策略对男孩的影响可能大于女孩。
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