The Link Between Walking And Diabetes

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It is now suggested that training with alternating levels of walking intensity may be better than walking at a constant speed to help manage blood sugar in people with type 2 diabetes. The effects of exercise on blood sugar control in individuals with type 2 diabetes have been well documented but the optimal exercise intensity and type remains to be defined. 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 glycaemic control more than low-intensity exercise. 

Other research by the same authors revealed that interval-walking training or IWT where the intensity of the training alternates more favorably improves glycaemic control in people with type 2 diabetes when compared to continuous-walking training or CWT matched to have the same overall energy expenditure.

For the new study - conducted by Dr. Thomas Solomon and colleagues at the University of Copenhagen in Denmark, and published in Diabetologia, the journal of the European Association for the Study of Diabetes - the authors analyzed the potential mechanisms behind the effect. Individuals with type 2 diabetes were randomized into three groups:

A control group (CON)

An IWT group

An energy-expenditure-matched CWT group

Training groups were prescribed highly standardized but free-living and unsupervised training for five, 60-minute sessions per week. A hyperglycaemic clamp was used to measure insulin secretion a standard method whereby glucose is infused at a constant rate and then used to work out how much insulin is being produced. Glucose isotope tracers were infused to measure glucose metabolism and skeletal muscle biopsies were taken to assess insulin signaling. These variables were measured before and after a four-month intervention.

The Findings

The researchers found that:

Improved blood sugar control was only evident in the IWT group. This was likely to be caused by IWT-induced increases in insulin sensitivity and increased peripheral glucose disposal, which is indicative of improved glucose metabolism.

No changes occurred in the CWT or CON groups and only IWT improved insulin signaling in skeletal muscle.

The Conclusions

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.

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.

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Reviewed By:

Founder Ray Spotts has a passion for all things natural and has made a life study of nature as it relates to health and well-being. Ray became a forerunner bringing products to market that are extraordinarily effective and free from potentially harmful chemicals and additives. For this reason Ray formed Trusted Health Products, a company you can trust for clean, effective, and healthy products. Ray is an organic gardener, likes fishing, hiking, and teaching and mentoring people to start new businesses. You can get his book for free, “How To Succeed In Business Based On God’s Word,” at www.rayspotts.com.


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