November 24, 2010
Dual-Threat Training A Boost For Diabetes Patients
(Ivanhoe Newswire) -- A combination of aerobic exercise and resistance training was associated with improved glycemic levels among patients with type 2 diabetes, compared to patients who did not exercise, according to a new study. Bottom line : this level of improvement was not seen among patients who performed either aerobic exercise or resistance training alone.
Although it is generally accepted that regular exercise provides substantial health benefits for individuals with type 2 diabetes, the exact exercise type (aerobic vs. resistance vs. both) has been unclear. "Given that the 2008 Federal Physical Activity Guidelines recommend aerobic exercise in combination with resistance training, the unanswered question as to whether for a given amount of time the combination of aerobic and resistance exercise is better than either alone has significant clinical and public health importance," the authors are quoted as saying.
The individuals were enrolled in the 9-month exercise program between April 2007 and August 2009. Forty-one participants were assigned to the nonexercise control group; 73 to resistance training sessions; 72 to aerobic exercise sessions; and 76 to combined aerobic and resistance training.
The researchers found that the absolute change in HbA1c in the combination training group vs. the control group was -0.34 percent. In neither the resistance training (-0.16 percent) nor the aerobic (-0.24 percent) groups were changes in HbA1c significant compared with those in the control group. The prevalence of increases in hypoglycemic medications were 39 percent in the control, 32 percent in the resistance training, 22 percent in the aerobic, and 18 percent in the combination training groups.
"Only the combination exercise group improved maximum oxygen consumption compared with the control group. All exercise groups reduced waist circumference from [-.75 to -1.1 inches] compared with the control group," the authors wrote. The resistance training group lost an average of 3.1 lbs. fat mass and the combination training group lost an average of 3.7 lbs., compared with the control group.
SOURCE : JAMA, November 2010