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Selected Lifestyle Practices in Urban African American Women—Relationships to Pregnancy Outcome, Dietary Intakes and Anthropometric Measurements¹

Dept. of Nutritional Sciences, College of Allied Health Sciences ^* Dept. of Human Development, School of Education ^** Dept. of Obstetrics and Gynecology, College of Medicine ^*** Nutrition Program Project, Howard University ^**** Dept. of Obstetrics, District of Columbia General Hospital, and Howard University Hospital, Washington, D.C. 20059

The relationships of selected lifestyle factors (cigarette smoking, consumption of alcoholic beverages, recreational drug use, and exercise during pregnancy), all self-reported, to pregnancy outcomes, dietary intake during pregnancy, and maternal anthropometric measurements, were investigated in a group of urban African American pregnant women. The 234 subjects were aged 16–35 years and were free of diabetes and abnormal hemoglobins. The lifestyle data were collected by trained interviewers during the subjects' prenatal clinic visits, and the dietary data by monthly, quantitative 24-hour food recalls conducted during these same visits. Maternal anthropometric measurements were obtained from the subjects' hospital records, and pregnancy outcome data during physical examinations of the newborn infants. Both cigarette smoking and drug use were associated with significantly lower mean birth weight, length, and head circumference, while exercise was associated with a significantly higher mean birth weight, and head circumference (P < 0.05). Drug use during pregnancy was associated with a significantly higher intake of vitamin C, and a significantly lower intake of iron; while women reporting drug use before pregnancy had significantly higher mean intakes of food energy, protein, total and saturated fat, and zinc. Prepregnancy weight, percent ideal prepregnancy body weight, prepregnancy body mass index, and delivery weight were significantly lower among those reporting drug use before pregnancy. Multiple regression analyses indicated that smoking explained a relatively small proportion of the variance in infant birth weight compared with delivery weight and percent of ideal prepregnancy body weight.

KEY WORDS: • smoking • alcohol • illicit drug use • exercise • pregnancy

¹ The investigations reported in this paper were made as part of the program project "Nutrition, Other Factors and the Outcome of Pregnancy," supported by the National Institute of Child Health and Human Development, National Institutes of Health, through a grant in 1985 to the Department of Human Nutrition and Food, School of Human Ecology, Howard University. Guest Editor for this supplement volume to The Journal of Nutrition was Cecile H. Edwards, Department of Nutritional Sciences, College of Allied Health Sciences, Howard University, Washington, D. C. 20059. Tapes of the data are available at cost by sending a written request to the Guest Editor at the above address. Supported by Grant 3 PO1 HD17104-05, ENG, NICHD, NIH.

² To whom correspondence should be addressed: Department of Nutritional Sciences, College of Allied Health Sciences Howard University, Washington, D.C. 20059.

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