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Exercise-induced improvements in glycemic control and type 2 diabetes

Date:
July 1, 2013
Source:
American Medical Association (AMA)
Summary:
Exercise-induced improvements in glycemic control are dependent on the pre-training glycemic level, and although moderate-intensity aerobic exercise can improve glycemic control, individuals with ambient hyperglycemia (high blood glucose) are more likely to be nonresponders, according to new research.
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Exercise-induced improvements in glycemic control are dependent on the pre-training glycemic level, and although moderate-intensity aerobic exercise can improve glycemic control, individuals with ambient hyperglycemia (high blood glucose) are more likely to be nonresponders, according to a research letter by Thomas P. J. Solomon, Ph.D. of the Centre of Inflammation and Metabolism, Copenhagen, Denmark, and colleagues.

A total of 105 older (average age 61 years), overweight or obese individuals with impaired glucose tolerance or type 2 diabetes mellitus (T2DM) participated in a 12-to 16-week period of aerobic exercise training. Researchers measured the participants' body composition, aerobic fitness, and glycemic control, and assessed the relationships between pre-intervention variables and intervention-induced changes.

Average change in body weight, whole-body fat, fasting plasma glucose and 2-hour oral glucose tolerance test (OGTT) were significantly improved following exercise training. However, researchers found that aerobic exercise-induced improvements in glycemic control were reduced by ambient hyperglycemia, particularly in participants with T2DM.

"The clinical relevance of these new findings is paramount and highlights the need to understand the metabolic "nonresponder." Because chronic hyperglycemia…potentially predicts a poor therapeutic effect of aerobic exercise on glycemic control and fitness, using exercise to treat patients with poorly controlled T2DM may have limited chances of a successful outcome," the study concludes.


Story Source:

The above story is based on materials provided by American Medical Association (AMA). Note: Materials may be edited for content and length.


Journal Reference:

  1. Thomas P. J. Solomon, Steven K. Malin, Kristian Karstoft, Jacob M. Haus, John P. Kirwan. The Influence of Hyperglycemia on the Therapeutic Effect of Exercise on Glycemic Control in Patients With Type 2 Diabetes Mellitus. JAMA Internal Medicine, 2013 DOI: 10.1001/jamainternmed.2013.7783

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American Medical Association (AMA). "Exercise-induced improvements in glycemic control and type 2 diabetes." ScienceDaily. ScienceDaily, 1 July 2013. <www.sciencedaily.com/releases/2013/07/130701163728.htm>.
American Medical Association (AMA). (2013, July 1). Exercise-induced improvements in glycemic control and type 2 diabetes. ScienceDaily. Retrieved April 28, 2015 from www.sciencedaily.com/releases/2013/07/130701163728.htm
American Medical Association (AMA). "Exercise-induced improvements in glycemic control and type 2 diabetes." ScienceDaily. www.sciencedaily.com/releases/2013/07/130701163728.htm (accessed April 28, 2015).

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