Predictors of change in physical activity during and after pregnancy - Project viva
Predictors of change in physical activity during and after pregnancy - Project viva
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DOI：
10.1016/j.amepre.2006.12.017
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发表时间：
2007-04-01
影响因子：
5.5
通讯作者：
Gillman, Matthew W.
中科院分区：
文献类型：
--
作者：
Pereira, Mark A.;Rifas-Shiman, Sheryl L.;Gillman, Matthew W.
背景：很少有研究记录从孕前到产后体力活动的纵向变化。方法：这项研究估计了1442名妇女在孕前、中期和产后6个月自报的闲暇体力活动的变化。结果：平均年龄(SD)为32.5(4.5)岁，34%的女性孕前超重或肥胖(体重指数等于或大于25 kg/m(2))，76%为白人。孕前平均每周休闲体育活动时间为9.6小时。报告称，从怀孕前到产后6个月，总活动量减少了-1.4(95%CI=-1.0至-1.9)小时，原因是中等强度和剧烈的体力活动减少，但步行不减少。不够活跃的生活方式(每周总活动量少于150分钟)的流行率从怀孕前的12.6%上升到产后的21.7%。在至少有一个孩子的妇女中，与没有孩子的妇女相比，在怀孕期间变得不够活跃的OR是1.58(95%CI=1.07-2.32)。产后活动不足的预测因素包括产后体重滞留(OR=1.31；每增加5公斤，95%CI=1.05~1.58)；妊娠早期工作时间较长(OR=5.12；95%CI=1.96~13.4，45+vs 0小时)；以及报告称，缺乏育儿是体力活动的障碍(OR=1.73；95%CI=0.99~3.02)。结论：妊娠期间妇女中等强度和剧烈的体力活动减少，并持续到产后6个月。步行的水平并没有下降。在家中有孩子、工作时间较长以及缺乏儿童看护是怀孕期间或怀孕后变得不够活跃的预测因素。
Background: Few studies document longitudinal changes in physical activity from prepregnancy to the postpartum period.Methods: This study estimated change in self-reported leisure-time physical activity in 1442 women before pregnancy, during the second trimester, and at 6 months postpartum. In addition, it also examined predictors of becoming insufficiently active during or after pregnancy.Results: The mean (SD) age was 32.5 (4.5) years, 34% of the women were overweight or obese prepregnancy (body mass index equal to or greater than 25 kg/m(2)), and 76% were white. Before pregnancy, the mean total leisure physical activity was 9.6 hours per week. The reported decrease in total activity between prepregnancy and 6 months postpartum was -1.4 (95% CI=-1.0 to -1.9) hours per week, accounted for by decreases in moderate and vigorous physical activity but not walking. Prevalence of insufficiently active lifestyle (less than 150 minutes per week of total activity) increased from 12.6% before pregnancy to 21.7% during the postpartum period. The OR for becoming insufficiently active during pregnancy was 1.58 (95% CI=1.07-2.32) in women with at least one child compared with no children. Predictors of becoming insufficiently active postpartum included postpartum weight retention (OR=1.31; 95% CI=1.05-1.58 for each 5-kg increment); working longer hours in the first trimester (e.g., OR=5.12; 95% CI=1.96-13.4 for 45+ vs 0 hours); and reporting that lack of child care was a barrier to physical activity (OR=1.73; 95% CI=0.99-3.02).Conclusions: Women reported decreases in moderate and vigorous physical activity during pregnancy that persisted at 6 months postpartum. Levels of walking did not decline. Children in the home, longer work hours, and lack of child care were predictors of becoming insufficiently active during or after pregnancy.