‘Bursts’ of Exercise Improve HbA1c, Lipids in Type 2 Diabetes

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‘Bursts’ of Exercise Improve HbA1c, Lipids in Type 2 Diabetes


Short bursts of high-intensity exercise resulted in a significant improvement of cardiometabolic risk factors when compared with a traditional sustained-exercise program in a small group of patients with type 2 diabetes, a new study shows.
Presenting the results here at the 2015 Canadian Cardiovascular Congress (CCC), investigators, including senior researcher Dr Paul Poirier (Université Laval, Quebec City, QC), report that diabetic patients who engaged in “burst exercise” had significantly larger reductions in HbA1c, LDL cholesterol, and triglyceride levels, as well as larger increases in HDL cholesterol, compared with those who participated in a sustained-exercise program.
“Quite frankly, the reduction in HbA1c was as good as adding a drug,” Poirier stated. “From a class effect, when you have one antihyperglycemic drug, you’re treating only diabetes, but with the burst exercise, you’re treating diabetes and you’re also treating lipids.”
Notably, adherence to the burst-exercise program was significantly better than the conventional recommendation of 30 minutes of sustained exercise (460 minutes vs 362 minutes; P=0.006). Given the differences in the amount of exercise, the researchers performed an analysis restricted to individuals with equivalent amounts of exercise time and still observed a significant decrease in HbA1c with burst exercise, as well as an improvement in the other cardiometabolic risk factors, when contrasted with sustained activity.
Patients in the study were all newly diagnosed with diabetes, noted Poirier. The reason is that investigators had to be cautious about silent ischemia, which exists in 20% to 30% of patients with long-term diabetes, he said. The current study did not include screening with exercise testing.
Pandey AK, Clarus S, Poirier P. The comparative effects of burst exercise versus sustained exercise on the cardiometabolic status of newly diagnosed diabetic patients. 2015 Canadian Cardiovascular Congress; October 24, 2015–October 27, 2015. Toronto, Ontario. Abstract 390

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