Physical Activity Changes Predict Abdominal Fat Change in Midlife Women
Physical Activity Changes Predict Abdominal Fat Change in Midlife Women
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DOI：
10.1123/jpah.7.3.316
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发表时间：
2010-05-01
影响因子：
3.1
通讯作者：
Peterson, Travis
中科院分区：
文献类型：
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作者：
Davidson, Lance E.;Tucker, Larry;Peterson, Travis
背景资料：身体活动（PA）变化对中年女性腹部脂肪增加风险的影响尚未使用客观测量和控制潜在的混杂变量进行研究。研究方法：在233名中年（40 +/- 3岁）、非肥胖、非吸烟、主要是白人女性的前瞻性队列中，使用加速度计评估PA的变化，在基线时连续佩戴7天，并在20个月随访时再次佩戴。在同期完成称重摄食量日记。Bod Pod评估全身脂肪。腹部脂肪通过脐部腹围测量。结果：PA降低的女性在20个月内腹部脂肪增加，而PA增加的女性（F = 4.82，P = 0.009）没有增加。在调整了潜在的混杂因素（包括全身脂肪和总能量摄入的变化）后，PA的变化仍然是腹部脂肪变化的独立预测因素。与维持或减少PA的女性相比，增加PA的女性增加腹部脂肪的风险约为一半（RR = 0.52，95% CI：0.27，0.98）。结论：增加日常体力活动可能会降低中年女性腹部脂肪增加的风险，而与全身脂肪或能量摄入的变化无关。
Background: The influence of physical activity (PA) changes on risk of abdominal fat gain in midlife women has not been studied using objective measures and controlling for potentially confounding variables. Methods: Changes in PA were assessed within a prospective cohort of 233 middle-age (40 +/- 3 years), nonobese, nonsmoking, primarily Caucasian women by using accelerometers, worn continuously for 7 consecutive days at baseline and again at a 20 month follow-up. Weighed food intake diaries were completed on concurrent days. Bod Pod assessed total body fat. Abdominal fat was measured by abdominal circumference at the umbilicus. Results: Women who decreased PA gained abdominal fat across 20 months, while women who increased PA (F = 4.82, P = .009) did not. Change in PA remained an independent predictor of abdominal fat change after adjusting for potential confounders, including changes in total body fat and total energy intake. Compared with women who maintained or decreased PA, women who increased PA had approximately half the risk (RR = 0.52, 95% CI: 0.27, 0.98) of gaining abdominal fat. Conclusions: Increasing daily physical activity may attenuate risk of abdominal fat gain in middle-age women independent of changes in total body fat or energy intake.