Marianna Karachaliou1, Vaggelis Georgiou2, Theano Roumeliotaki2, Georgia Chalkiadaki2, Vasiliki Daraki3, Stella Koinaki2, Eirini Dermitzaki4, Katerina Sarri2, Maria Vassilaki2, Manolis Kogevinas5, Emily Oken6, Leda Chatzi2. 1. Department of Social Medicine, Faculty of Medicine, University of Crete, Crete, Greece. Electronic address: m.karachaliou@med.uoc.gr. 2. Department of Social Medicine, Faculty of Medicine, University of Crete, Crete, Greece. 3. Department of Social Medicine, Faculty of Medicine, University of Crete, Crete, Greece; Department of Endocrinology, Diabetes Mellitus, and Metabolic Disorders, Faculty of Medicine, University of Crete, Crete, Greece. 4. Department of Clinical Chemistry and Biochemistry, Faculty of Medicine, University of Crete, Crete, Greece. 5. National School of Public Health, Athens, Greece; Center for Research in Environmental Epidemiology, Municipal Institute of Medical Research, and CIBER Epidemiologia y Salud Pública, Barcelona, Spain. 6. Obesity Prevention Program, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA.
Abstract
OBJECTIVE: The purpose of this study was to investigate the association of trimester-specific gestational weight gain with offspring fetal growth, obesity risk, and cardiometabolic health outcomes from birth to 4 years of age. STUDY DESIGN: We conducted the present study with 977 mother-child pairs of the pregnancy cohort "Rhea" study in Crete, Greece. We measured birthweight, body mass index from 6 months to 4 years of age, waist circumference, skinfold thickness, blood pressure, and blood levels of lipids, C-reactive protein, and adipose tissue hormones at 4 years of age. We used multiple linear and log Poisson regression models to examine the association of exposure with continuous or binary outcomes, respectively. RESULTS: Greater rate of gestational weight gain in the first trimester of pregnancy (per 200 g/wk) was associated with increased risk of overweight/obesity from 2 years (relative risk [RR], 1.25; 95% confidence interval [CI], 1.09-1.42) to 4 years of age (RR, 1.15; 95% CI, 1.05-1.25), but not with birth size. Each 200 g/wk of weight gain in the first trimester of pregnancy was also associated with greater risk of high waist circumference (RR, 1.13; 95% CI, 1.04-1.23), high sum of skinfold thickness (RR, 1.15; 95% CI, 1.02-1.29), and higher diastolic blood pressure at 4 years of age (β, 0.43 mm Hg; 95% CI, 0.00-0.86). Greater rate of gestational weight gain during the second and third trimesters of pregnancy (per 200 g/wk) was associated with greater risk of large-for-gestational-age neonates (RR, 1.22; 95% CI, 1.02, 1.45) and higher levels of cord blood leptin (ratio of geometric means, 1.08; 95% CI, 1.00-1.17), but not with child anthropometry at later ages. CONCLUSION: Timing of gestational weight gain may influence childhood cardiometabolic outcomes differentially.
OBJECTIVE: The purpose of this study was to investigate the association of trimester-specific gestational weight gain with offspring fetal growth, obesity risk, and cardiometabolic health outcomes from birth to 4 years of age. STUDY DESIGN: We conducted the present study with 977 mother-child pairs of the pregnancy cohort "Rhea" study in Crete, Greece. We measured birthweight, body mass index from 6 months to 4 years of age, waist circumference, skinfold thickness, blood pressure, and blood levels of lipids, C-reactive protein, and adipose tissue hormones at 4 years of age. We used multiple linear and log Poisson regression models to examine the association of exposure with continuous or binary outcomes, respectively. RESULTS: Greater rate of gestational weight gain in the first trimester of pregnancy (per 200 g/wk) was associated with increased risk of overweight/obesity from 2 years (relative risk [RR], 1.25; 95% confidence interval [CI], 1.09-1.42) to 4 years of age (RR, 1.15; 95% CI, 1.05-1.25), but not with birth size. Each 200 g/wk of weight gain in the first trimester of pregnancy was also associated with greater risk of high waist circumference (RR, 1.13; 95% CI, 1.04-1.23), high sum of skinfold thickness (RR, 1.15; 95% CI, 1.02-1.29), and higher diastolic blood pressure at 4 years of age (β, 0.43 mm Hg; 95% CI, 0.00-0.86). Greater rate of gestational weight gain during the second and third trimesters of pregnancy (per 200 g/wk) was associated with greater risk of large-for-gestational-age neonates (RR, 1.22; 95% CI, 1.02, 1.45) and higher levels of cord blood leptin (ratio of geometric means, 1.08; 95% CI, 1.00-1.17), but not with child anthropometry at later ages. CONCLUSION: Timing of gestational weight gain may influence childhood cardiometabolic outcomes differentially.
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