What is it about?
For people living with type 1 diabetes who manage their diabetes using an insulin pump, exercise can still cause low blood sugar (hypoglycemia) unless changes are made to insulin delivery. He we show that morning fasted exercise can be performed for up to at least 2 hours without the need for carbohydrate intake as long as the basal rate is lowered by 80% ninety minutes before the onset of exercise. If basal rates are not reduced, or are only reduced when the exercise starts, then some carbohydrate feeding is needed to help prevent hypoglycemia.
Photo by Free To Use Sounds on Unsplash
Why is it important?
This work is particularly important for those people living with type 1 diabetes on pump therapy who want to exercise in a fasted state for weight loss. By turning down basal rates to 20% of the usual rate (or an 80% reduction in basal rate), then carbohydrate intake needs are minimized and ketone levels are still maintained in a safe range. This strategy also appears to increase the body's reliance on lipid as a fuel source for exercise in people living with type 1 diabetes.
Read the Original
This page is a summary of: Carbohydrate Requirements for Prolonged, Fasted Exercise With and Without Basal Rate Reductions in Adults With Type 1 Diabetes on Continuous Subcutaneous Insulin Infusion, Diabetes Care, December 2020, American Diabetes Association, DOI: 10.2337/dc20-1554.
You can read the full text:
Fine Tuning Exercise in Diabetes
On the podcast, Dr. Riddell discussed: How an emerging technology could sense when the body is initiating increased activity or exercise, and respond accordingly to keep insulin at the appropriate level Why eating a large carbohydrate-rich meal prior to exercise has different effects in people who have type I diabetes versus type II diabetes How tailoring the intensity of an exercise regimen could be safer and have beneficial effects on people with diabetes
The following have contributed to this page