Early Postpartum Sleep and Substantial Postpartum Weight Retention in Women with Gestational Diabetes Mellitus [21A]

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Abstract

INTRODUCTION:

In adults, sleep duration has been linked to obesity, coronary artery disease, and type 2 diabetes. Less sleep at 6 months postpartum has been linked with higher weight retention. This study evaluates postpartum sleep and 1-yr weight retention among women with gestational diabetes mellitus (GDM).

METHODS:

Prospective cohort study of 1,035 women with GDM who delivered a singleton, live birth in northern California and enrolled in the Study of Women, Infant Feeding and Type 2 Diabetes after GDM (SWIFT) that involved in-person visits at 6–9 wks postpartum and annually to evaluate postpartum oral glucose tolerance, anthropometry, infant feeding, sleep, and other behaviors. Of these, 904 were classified into categories of sleep per 24 hours at 6–9 weeks postpartum, and into substantial postpartum weight retention (SPPWR), or not. Logistic regression models estimated odds ratios of SPPWR for sleep categories controlling for sociodemographics, breastfeeding, weight gain, BMI, glucose tolerance, depression, and lifestyle behaviors.

RESULTS:

168 (19%) participants were classified with SPPWR. Distributions of sleep duration were: 227 (25%) ≤5 hrs, 236 (26%) 6 hrs, 218 (24%) 7 hrs and 223 (25%) ≥8 hrs per 24 hrs. Fully adjusted odds ratios (95% CI) for SPPWR were 1.55 (0.87–2.78) for ≤5 hrs, 1.70 (0.96–3.00) for 6 hrs and 2.26 (1.37–4.03) for ≥8 hrs versus 7 hrs.

CONCLUSION:

Sleeping more than 8 hrs at 6–9 weeks postpartum more than doubled the risk of SPPWR among women with recent GDM. Characteristics of women with longer sleep duration in the early postpartum period and their relationship to weight retention require further investigation.

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