Research explores why interval walking training is better than continuous walking training: For glucose metabolism in people with diabetes

Traditionally, high-intensity exercise has not been recommended for individuals with type 2 diabetes due to a fear of inducing injuries and discouraging patients from continuing with the exercise program. Nevertheless, high-intensity exercise improves glycemic control more than low-intensity exercise.

New research published in Diabetologia (the journal of the European Association for the Study of Diabetes) suggests that training with alternating levels of walking intensity (interval training) could be better than walking at a constant speed to help manage blood sugar in people with type 2 diabetes. The research is by Dr Thomas Solomon, University of Copenhagen, Denmark, and colleagues.

helps people with type 2 diabetes control their blood sugar levels. Although high-intensity exercise offers the prospect of better control, doctors often warn against that approach, due to the risk of injury and the likelihood someone will not stay with it.

The authors conclude:  The most important finding of this study is that IWT, but not CWT, increased insulin sensitivity without a compensatory decrease in insulin secretion, thus improving the overall impact of insulin on blood sugar in these patients.

They add: Whether these beneficial effects of IWT continue and result in better health outcomes in the long term must be determined in order to justify the clinical utility of interval training for people with type 2 diabetes.

Free-living walking training is feasible in type 2 diabetic patients. Continuous walking offsets the deterioration in glycemia seen in the control group, and interval walking is superior to energy expenditure-matched continuous walking for improving physical fitness, body composition, and glycemic control.

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