Physical activity and changes in weight and waist circumference in midlife women: Findings from the study of women's health across the nation
Physical activity and changes in weight and waist circumference in midlife women: Findings from the study of women's health across the nation
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DOI：
10.1093/aje/kwh299
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发表时间：
2004-11-01
影响因子：
5
通讯作者：
Sowers, M
中科院分区：
文献类型：
--
作者：
Sternfeld, B;Wang, H;Sowers, M
关于年龄、绝经状态和/或生活方式行为在多大程度上导致中年妇女体重、脂肪量和中心性肥胖存在争议。为了解决这个问题，作者纵向检查了3064名参加全国妇女健康研究（SWAN）的42-52岁不同种族/民族的妇女的年龄、更年期状态和体力活动与体重和腰围的关系，这是一项绝经期过渡的观察性研究。经过3年的随访（1996-1997至1999-2000），平均体重增加了2.1 kg（标准偏差（SD）， 4.8）或3.0% (SD, 6.5)，平均腰围增加了2.2 cm （SD, 5.4）或2.8% （SD, 6.3）。绝经状态的改变与体重增加无关，也与腰围增加无关。报告的运动/锻炼水平每增加一个单位（在1-5的范围内），纵向上与体重减少0.32 kg （p < 0.0001）和腰围减少0.10 cm（无显著性）相关。在日常体育活动（骑自行车和步行等交通工具和少看电视）中也观察到类似的反比关系。这些发现表明，尽管随着时间的推移，中年女性的体重和腰围往往会增加，但保持或增加定期体育活动的参与有助于预防或减缓这些增长。
Controversy exists regarding the extent to which age, menopausal status, and/or lifestyle behaviors account for the increased weight, fat mass, and central adiposity experienced by midlife women. To address this question, the authors longitudinally examined the relations of aging, menopausal status, and physical activity to weight and waist circumference in 3,064 racially/ethnically diverse women aged 42-52 years at baseline who were participating in the Study of Women's Health Across the Nation (SWAN), an observational study of the menopausal transition. Over 3 years of follow-up (1996-1997 to 1999-2000), mean weight increased by 2.1 kg (standard deviation (SD), 4.8) or 3.0% (SD, 6.5) and mean waist circumference increased by 2.2 cm (SD, 5.4) or 2.8% (SD, 6.3). Change in menopausal status was not associated with weight gain or significantly associated with increases in waist circumference. A one-unit increase in reported level of sports/exercise (on a scale of 1-5) was longitudinally related to decreases of 0.32 kg in weight (p < 0.0001) and 0.10 cm in waist circumference (not significant). Similar inverse relations were observed for daily routine physical activity (biking and walking for transportation and less television viewing). These findings suggest that, although midlife women tend to experience increases in weight and waist circumference over time, maintaining or increasing participation in regular physical activity contributes to prevention or attenuation of those gains.