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Without prolonged fasting, healthy individuals maintain blood glucose levels above 3.5 mM due to a well-adapted neuroendocrine counterregulatory system that effectively prevents acute hypoglycemia, a potentially life-threatening condition. The primary clinical scenarios for hypoglycemia encompass diabetes treatment, inappropriate production of endogenous insulin or insulin-like substances by tumors, and the use of glucose-lowering agents in non-diabetic individuals. Notably, hypoglycemia in the...
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Exercise-induced hypoglycaemia in type 1 diabetes.

E J Cockcroft1, P Narendran2,3, R C Andrews1,4

  • 1University of Exeter Medical School, Exeter, UK.

Experimental Physiology
|December 1, 2019
PubMed
Summary

Exercise is crucial for type 1 diabetes management, but fear of hypoglycemia is a barrier. This review offers evidence-based strategies to prevent and manage exercise-induced hypoglycemia in type 1 diabetes (T1D) for improved physical activity.

Keywords:
exercisehypoglycaemiatype 1 diabetes

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Area of Science:

  • Endocrinology
  • Sports Medicine
  • Diabetes Management

Background:

  • Exercise offers significant health benefits for individuals with type 1 diabetes mellitus (T1D), including reduced cardiovascular risk and improved quality of life.
  • Despite recommendations, many with T1D do not meet physical activity targets due to fear of hypoglycemia.
  • Hypoglycemia during exercise can limit athletic performance and lead individuals with T1D to avoid physical activity.

Purpose of the Study:

  • To present evidence-based strategies for preventing and managing exercise-induced hypoglycemia in T1D.
  • To increase understanding of approaches that mitigate hypoglycemia risk during physical activity.
  • To support individuals with T1D and their clinicians in developing personalized exercise plans.

Main Methods:

  • This review synthesizes existing evidence on exercise-related hypoglycemia in T1D.
  • It examines strategies applicable before, during, and after exercise.
  • Key areas include timing, type of exercise, insulin and carbohydrate adjustments, technology, and education.

Main Results:

  • Strategies to mitigate hypoglycemia risk can be implemented across the exercise continuum.
  • Adjustments in insulin, carbohydrate intake, and exercise timing are critical.
  • Novel technologies and patient education play a role in managing exercise-induced hypoglycemia.

Conclusions:

  • Effective management of exercise-induced hypoglycemia is vital for increasing physical activity in T1D.
  • Individualized approaches combining physiological understanding and practical strategies are essential.
  • This knowledge empowers individuals with T1D and clinicians to optimize exercise participation and outcomes.