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International Journal of Endocrinology
Volume 2012, Article ID 293821, 9 pages
Research Article

Impact of Maternal Physical Activity and Infant Feeding Practices on Infant Weight Gain and Adiposity

1The Hospital for Sick Children, Department of Pediatrics, University of Toronto, 555 University Avenue, Toronto, ON, Canada M5G 1X8
2Leadership Sinai Centre for Diabetes, Mount Sinai Hospital, Joseph and Wolf Lebovic Health Complex, 60 Murray Street, Toronto, ON, Canada M5T 3L9
3Division of Endocrinology, University of Toronto, Toronto, ON, Canada
4Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Joseph and Wolf Lebovic Health Complex, 600 University Avenue, Toronto, ON, Canada M5G 1X5
5Department of Nutritional Sciences, University of Toronto, FitzGerald Building, 150 College Street, Toronto, ON, Canada M5S 3E2

Received 9 March 2012; Revised 25 June 2012; Accepted 11 July 2012

Academic Editor: Jack R. Wall

Copyright © 2012 Lisa Chu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Increasing evidence supports the contribution of intrauterine environmental exposures on obesity risk in offspring. Few studies have included maternal and infant lifestyle factors. Our objective was to study the impact of maternal physical activity, infant feeding, and screen time on offspring weight gain and adiposity. In a prospective cohort study, 246 mothers underwent testing during pregnancy to assess glucose tolerance status and insulin sensitivity. Anthropometry and questionnaires on physical activity, infant feeding, and screen time were completed. Multiple-linear regression was performed to examine the impact of maternal and infant factors on infant weight gain and weight-for-length z-score at 1 year. Infant weight outcomes were negatively predicted by maternal pregravid vigorous/sport index and exclusive breastfeeding duration. After adjustment, each unit increase in maternal pregravid vigorous/sport index decreased infant weight gain by 218.6 g ( , ) and weight-for-length z-score by 0.20 ( , ). Each month of exclusive breastfeeding reduced infant weight gain by 116.4 g ( , ) and weight-for-length z-score by 0.08 ( , ). Maternal pregravid physical activity and exclusive breastfeeding duration are associated with weight gain and adiposity as early as 1 year of age.