Prepregnancy Physical Activity in relation to Offspring Birth Weight: A Prospective Population-Based Study in Norway—The HUNT Study

Department of Human Movement Science, Norwegian University of Science and Technology, 7491 Trondheim, Norway.
Journal of pregnancy 01/2013; 2013:780180. DOI: 10.1155/2013/780180
Source: PubMed


Background. The objective was to examine the association between prepregnancy physical exercise and offspring birth weight and to assess the combined association of pre-pregnancy body mass index (BMI) and physical exercise on birth weight. Methods. The study included 2,026 women aged 20-39 years participating in the Norwegian HUNT study and linked with the Medical Birth Registry. We calculated mean differences in birth weight and odds ratios (ORs) for a macrosomic infant (i.e., birth weight >4000 g) using linear and logistic regression analysis. Results. There was no clear association between leisure time physical exercise and mean birth weight. Women who reported no exercise had reduced risk of a macrosomic infant (OR, 0.6; 95% confidence interval (CI), 0.4-0.9) compared to women with a high exercise level. Overweight (BMI ≥ 25.0 kg/m(2)) was associated with an OR of 1.9 (95% CI, 1.2-2.9) for a macrosomic infant among women who reported low exercise levels, whereas the OR was 1.2 (95% CI, 0.8-1.8) among women with higher exercise levels. Conclusion. There was some evidence that women who reported no exercise before pregnancy had lower risk for a macrosomic infant than women who exercised. Pre-pregnancy BMI was positively associated with birth weight and risk of macrosomia but only among the least active women.

Download full-text


Available from: Sigríður Lára Guðmundsdóttir, Mar 27, 2014
1 Follower
25 Reads
  • [Show abstract] [Hide abstract]
    ABSTRACT: This opinionated evidence-based selective review addresses flawed concepts related to “obesity”, bariatric surgery and approaches to treatment and prevention of a dysmetabolic syndrome of overnutrition and underactivity from the perspective of developmental origins of diseases prevalent in mid-life and beyond. Innovations focus on methods affecting appetite regulation and energy expenditure applicable throughout the life-cycle on the individual level but with transgenerational population-wide implications. Readers can expect new knowledge and enhanced understanding of a global health problem: “diabesity”.
    Maturitas 01/2013; 77(3). DOI:10.1016/j.maturitas.2013.12.004 · 2.94 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Recommendations for preconception care usually include optimal nutrition and physical activity, but these have not been tested extensively for their relationship with birth outcomes such as low birth weight and preterm birth. Data from Waves I, II, and IV of the National Longitudinal Study of Adolescent Health (Add Health) contractual dataset were used. In Wave I in-home interview, participants were asked to recall their frequency of having 5 types of food on the previous day, including milk, fruit, vegetables, grains, and sweets. At Wave II, participants reported the previous day's intake of 55 items, and results were categorized into high-calorie sweet, high-calorie nonsweet, and low-calorie food. At Wave I in-home interview, participants were also asked how many times in a week or during the past week they were involved in types of physical activity. At Wave IV, female participants reported pregnancies and birth outcomes. Multivariable linear regression analysis with survey weighting was used to predict birth weight and gestational age. There were no associations between reported food intake and birth outcomes. Girls who engaged in more episodes of active behavior had higher birth weights (P < .01), but hours of sedentary behavior was not associated with birth weight. Multivariable analysis also indicated a U-shaped association between BMI and birth weight (P for quadratic term = .01). Adolescents who are more physically active before pregnancy have more positive birth outcomes as represented by birth weight. Copyright © 2015 North American Society for Pediatric and Adolescent Gynecology. Published by Elsevier Inc. All rights reserved.
    Journal of Pediatric and Adolescent Gynecology 01/2015; DOI:10.1016/j.jpag.2015.01.004 · 1.68 Impact Factor