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Maternal growth, diet and reproductive history during adolescent pregnancy: Effects on infant birth weight
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ABSTRACTS OF PAPERS PRESENTED
JOURNAL OF ADOLESCENT HEALTH Vol. 13, No. 1
MATERNAL GROWTH, DIET AND REPRODUCTIVE HISTORY DURING ADOLESCENT PREGNANCY: FFFECTS ON INFANT BIRTH WEIGHT. Theresa 0. Scholl, Ph.D., M.P.H., Mary L. Hediger, Ph.D., Chor-San Khoo, Ph.D., and Richard L. Fischer, M.D. UMDNJ-SOM and Campbell Institute of Research Technology, Camden, New Jersey 08103 Maternal growth by knee height during adolescent pregnancy is prevalent joint effects parity, prior poor and (approximately intakes maternal growth have studied in our study more than 1,200 girls women. Growth during pregnancy been assessed in than 200 teenagers from cohort. uning the Dietary over pregnancy were Height Measuring (KRMD). eetimated using three 24-hour (entry to levels of circulating microcare, 36 weeks' gestation), nutrients were meaeured at 28 weeks' gestation. Reproductive hiatory was abstracted from medical charts. Nultiaravid adolescents who arew in knee height during the index pregnancy were-more likely to have had a prior poor outcome (15.89) compared with those who did not grow by KHRD (8.6%). The dietary intakes of growing teenagers were not different than those of nongrowing adolescents or mature women, but level6 of serum ferritin, folate, and red cell folate were lower (pc.05) in the third trimester among growing for confounding, maternal growth, coupled with adolescents. After control a poor diet (42/3 RDA for age and pregnancy), wae associated with a reduced infant birth weight of -269 g (pc.Ol), better intakes in the presence of maternal growth resultod in a -134 g decrement (p<.O5), but poor caloric intake without maternal growth had little effect (+27 g). Growth, along with a prior poor outcome , reduced birth weight in the current pregnancy by -500 g (pc.Ol), and with a good prior outcome by -170 g (pc.01). When all three factor8 were present simultaneously (maternal growth, poor intake, prior poor outcome), the birth weight reduction exceeded -765 g (pc.05). When the mother did not grow but the other two rick factore were present, the decrement warn much smaller (-183 g). Thus, consintent with the hypothesis that a growing mother may compete with her fetus for nutrients, we observed lower levels of circulating micro-nutrients in the third trimeeter at comparable intakes, lower birth weights in infants born to growing adolescents, and that low caloric intake exacerbates the influence of maternal growth on birth weight.
ABSTRACTS OF PAPERS PRESENTED
JOURNAL OF ADOLESCENT HEALTH Vol. 13, No. 1
MATERNAL GROWTH, DIET AND REPRODUCTIVE HISTORY DURING ADOLESCENT PREGNANCY: FFFECTS ON INFANT BIRTH WEIGHT. Theresa 0. Scholl, Ph.D., M.P.H., Mary L. Hediger, Ph.D., Chor-San Khoo, Ph.D., and Richard L. Fischer, M.D. UMDNJ-SOM and Campbell Institute of Research Technology, Camden, New Jersey 08103 Maternal growth by knee height during adolescent pregnancy is prevalent joint effects parity, prior poor and (approximately intakes maternal growth have studied in our study more than 1,200 girls women. Growth during pregnancy been assessed in than 200 teenagers from cohort. uning the Dietary over pregnancy were Height Measuring (KRMD). eetimated using three 24-hour (entry to levels of circulating microcare, 36 weeks' gestation), nutrients were meaeured at 28 weeks' gestation. Reproductive hiatory was abstracted from medical charts. Nultiaravid adolescents who arew in knee height during the index pregnancy were-more likely to have had a prior poor outcome (15.89) compared with those who did not grow by KHRD (8.6%). The dietary intakes of growing teenagers were not different than those of nongrowing adolescents or mature women, but level6 of serum ferritin, folate, and red cell folate were lower (pc.05) in the third trimester among growing for confounding, maternal growth, coupled with adolescents. After control a poor diet (42/3 RDA for age and pregnancy), wae associated with a reduced infant birth weight of -269 g (pc.Ol), better intakes in the presence of maternal growth resultod in a -134 g decrement (p<.O5), but poor caloric intake without maternal growth had little effect (+27 g). Growth, along with a prior poor outcome , reduced birth weight in the current pregnancy by -500 g (pc.Ol), and with a good prior outcome by -170 g (pc.01). When all three factor8 were present simultaneously (maternal growth, poor intake, prior poor outcome), the birth weight reduction exceeded -765 g (pc.05). When the mother did not grow but the other two rick factore were present, the decrement warn much smaller (-183 g). Thus, consintent with the hypothesis that a growing mother may compete with her fetus for nutrients, we observed lower levels of circulating micro-nutrients in the third trimeeter at comparable intakes, lower birth weights in infants born to growing adolescents, and that low caloric intake exacerbates the influence of maternal growth on birth weight.