# Strength and Aerobic Exercise for Type 2 Diabetes

Results from HART-D study looking at effects of exercise in people with type 2 diabetes reports that a combination of resistance and aerobic exercise provides better outcome than  resistance or aerobic exercise alone.

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## Effects of Aerobic and Resistance Training on Hemoglobin A1c Levels in Patients With Type 2 Diabetes

Context  Exercise guidelines for individuals with diabetes include both aerobic and resistance training although few studies have directly examined this exercise combination.

Objective  To examine the benefits of aerobic training alone, resistance training alone, and a combination of both on hemoglobin A1c (HbA1c) in individuals with type 2 diabetes.

Design, Setting, and Participants  A randomized controlled trial in which 262 sedentary men and women in Louisiana with type 2 diabetes and HbA1c levels of 6.5% or higher were enrolled in the 9-month exercise program between April 2007 and August 2009.

Intervention  Forty-one participants were assigned to the nonexercise control group, 73 to resistance training 3 days a week, 72 to aerobic exercise in which they expended 12 kcal/kg per week; and 76 to combined aerobic and resistance training in which they expended 10 kcal/kg per week and engaged in resistance training twice a week.

Conclusions  Among patients with type 2 diabetes mellitus, a combination of aerobic and resistance training compared with the nonexercise control group improved HbA1c levels. This was not achieved by aerobic or resistance training alone.