Prepregnancy body mass index influences lipid oxidation rate during pregnancy

• DOI: 10.1111/aogs.13058
• Publication Date: 2016-11-16T18:55:10Z
• Authors: Fernando Bugatto; Rocío Quintero‐Prado; José M. Vilar‐Sán...; Germán Perdomo; Rafael Torrejón; José L. Bartha
• Keywords: Respiratory quotient; Resting energy expenditure

The influence of maternal body mass index (BMI) on respiratory quotient during pregnancy is not clear. We aim to evaluate longitudinal changes in energy expenditure, quotient, and substrate oxidation rates normal overweight women with uncomplicated pregnancies. hypothesized that the threshold period switching from a predominantly carbohydrate lipid metabolism may be different women.Forty healthy pregnant were recruited for prospective cohort study. They divided into two groups, (BMI <25 kg/m2 or ≥25 ). Comparisons indirect calorimetry data performed monthly throughout pregnancy. relationships between variables BMI also analyzed.There was significant increase oxygen consumption (Vo2 ), carbon dioxide production (Vco2 ) resting expenditure both women. In weight group, decreased second trimester increased last trimester. Respiratory lower group trimester; between-group differences being at 20 36 weeks (0.85 ± 0.06 vs. 0.81 0.01, p = 0.009; 0.87 0.05 0.80 0.03, respectively). Lipid significantly higher (36.8 19.7% 55.2 5.6%, 0.003 33.6 18.2% 59.6 12.7%, 0.007, respectively).Prepregnancy influences rate