Dencker M, Thorsson O, Karlsson M K, Lindén C, Eiberg S, Wollmer P, Andersen L B
Department of Clinical Sciences, Malmö, Lund University, Sweden.
J Pediatr. 2006 Jul;149(1):38-42. doi: 10.1016/j.jpeds.2006.02.002.
To evaluate the association between objectively measured daily physical activity and body fat.
Cross-sectional, observational, study of 248 children aged 7.9 to 11.1 years. Abdominal fat mass and total body fat mass were measured by dual-energy X-ray absorptiometry. Daily physical activity was assessed by accelerometers for 4 days.
Total body fat expressed as a percentage of body mass was inversely related to minutes of vigorous physical activity per day, for all children r = -0.38 (P < .05). Children, both boys and girls, in the highest quartile of body fat performed on average 12 minutes less vigorous activity per day compared with their counterparts in the lowest quartile. Multiple regression analysis revealed that independent factors for body fat were number of minutes of vigorous activity per day and sex.
Low physical activity can be a contributing factor in childhood obesity. Only longitudinal studies, however, can give more definitive information about the relation between daily physical activity and obesity.
评估客观测量的日常身体活动与体脂之间的关联。
对248名年龄在7.9至11.1岁的儿童进行横断面观察性研究。通过双能X线吸收法测量腹部脂肪量和全身脂肪量。使用加速度计评估4天的日常身体活动。
以体重百分比表示的全身脂肪与每天剧烈身体活动的分钟数呈负相关，所有儿童的r = -0.38（P <.05）。与体脂最低四分位数的儿童相比，体脂最高四分位数的儿童（无论男孩还是女孩）平均每天的剧烈活动时间少12分钟。多元回归分析显示，体脂的独立影响因素是每天剧烈活动的分钟数和性别。
身体活动不足可能是儿童肥胖的一个促成因素。然而，只有纵向研究才能提供关于日常身体活动与肥胖之间关系的更确切信息。
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