Physical activity and the risk of gestational diabetes mellitus: a systematic review and dose-response meta-analysis of epidemiological studies.

Discussion In this meta-analysis higher leisure-time physical activity before and during pregnancy was associated with a marginally significant 22 % reduction and 20 % reduction in the relative risk of gestational diabetes mellitus, respectively.

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We also conducted sensitivity analyses excluding one study at a time in the analyses of leisure-time physical activity, and although the summary relative risks did not vary substantially exclusion of some studies made the borderline significant associations statistically significant (Supplementary Figures 5, 6).

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