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December 19, 2001

Exercise and Glycemic Control in Diabetes

Author Affiliations

Stephen J.LurieMD, PhD, Senior EditorIndividualAuthorJody W.ZylkeMD, Contributing EditorIndividualAuthor

JAMA. 2001;286(23):2941-2942. doi:10.1001/jama.286.23.2940

To the Editor: The results of the meta-analysis by Mr Boulé and colleagues1 support a widely held assumption that exercise improves glycemic control in patients with diabetes. The main outcome of the meta-analysis was a 0.66% reduction in glycosylated hemoglobin (HbA1c) in the exercise group. This effect is much smaller than the nearly 2-fold reduction in all-cause mortality observed by Wei et al.2 Potential reporting flaws in the original data may have led Boulé et al to underestimate the effect.

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