Influence of acute exercise on hyperglycemia in insulin-treated type 2 diabetes
Praet, Stephan F × Manders, Ralph Lieverse, A. G Kuipers, Harm Stehouwer, Coen D Keizer, Hans A Van Loon, Luc J #
American College of Sports Medicine
Medicine and Science in Sports and Exercise vol:38 issue:12 pages:2037-2044
Introduction: The impact of exercise on blood glucose homeostasis has not been assessed in long-standing type 2 diabetes patients receiving exogenous insulin treatment. Purpose: To study the effects of an acute bout of exercise on the subsequent 24-h blood glucose excursions under free-living conditions in insulin-treated type 2 diabetes patients. Methods: Eleven male type 2 diabetes patients (59 2 yr) performed an acute bout of exercise. One day before the exercise bout, a continuous glucose monitoring system (GlucoDay (R), A. Menarini Diagnostics) was inserted subcutaneously in the periumbilical region. The glucose sensor continuously measured glucose concentrations in the dialysate during a 48-h period. Results: The prevalence of hyperglycemic glucose excursions was reduced by 39% during a 24-h period (equivalent to 3 h) after an acute bout of exercise (P < 0.05). Average glucose concentrations 24 h before and after the exercise bout did not differ (NS). Mean dialysate glucose concentrations and the prevalence of hyperglycemic periods correlated strongly with baseline blood HbA(1)c concentrations (Pearson's R = 0.69, P < 0.05). Conclusion: An acute bout of exercise effectively reduces the prevalence of hyperglycemia during a 24-h period under free-living conditions in long-standing type 2 diabetes patients on exogenous insulin therapy.