Copyright © 2004 by the Johns Hopkins Bloomberg School of Public Health
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Work, Leisure-Time Physical Activity, and Risk of Preeclampsia and Gestational Hypertension
1 Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA.
2 Department of Biostatistics, College of Public Health, University of Iowa, Iowa City, IA.
3 Department of Biometry and Epidemiology, Medical University of South Carolina, Charleston, SC.
4 Yale Center for Perinatal, Pediatric, and Environmental Epidemiology, Yale School of Public Health, New Haven, CT.
Few studies of preeclampsia have assessed physical activity level, yet recent evidence suggests that the pathologic mechanisms in preeclampsia are similar to those in cardiovascular disease, for which physical activity is shown to be protective. The authors assessed the independent and combined effects of work and regular leisure-time physical activity (LTPA) during early pregnancy on risk of de novo preeclampsia (n = 44) and gestational hypertension (n = 172) among women recruited from 13 obstetric practices in the New Haven, Connecticut, area between 1988 and 1991. Control subjects were normotensive throughout pregnancy (n = 2,422). Information on time at work spent sitting, standing, and walking and on LTPA before and during pregnancy was collected via face-to-face interviews. Logistic regression analyses suggested that women who engaged in any regular LTPA regardless of caloric expenditure (adjusted odds ratio (aOR) = 0.66, 95% confidence interval (CI): 0.35, 1.22), were unemployed (aOR = 0.64, 95% CI: 0.21, 2.00), or had nonsedentary jobs (aOR = 0.71, 95% CI: 0.37, 1.36) were at decreased risk of preeclampsia. Analyses of gestational hypertension showed no indication of a protective effect of workplace activity, LTPA, or unemployment. Consistent with other studies, these data suggest that regular physical activity during pregnancy may reduce preeclampsia risk.
employment; exercise; hypertension; motor activity; pre-eclampsia; pregnancy
Abbreviations: Abbreviations: aOR, adjusted odds ratio; CI, confidence interval; LTPA, leisure-time physical activity.
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