Hypoglycemia During Exercise

Preventing hypoglycemia (low blood glucose) is an essential part of a complete workout for people with type 1 diabetes. Hypoglycemia can occur during and immediately after physical activity, as well as over the next 24-48 hours. Monitoring blood glucose and becoming familiar with your responses to exercise can help prevent immediate and delayed hypoglycemia.

The best defense against exercise-related hypoglycemia is to prepare with some carbohydrates. How much varies by person, insulin regimen, and current blood glucose level, as well as the activity’s type, timing, intensity, and duration. At least 10-15 grams of fast-acting carbohydrates are recommended, but this is highly individual. Carefully follow blood glucose levels before, during, and after exercise and be prepared to treat.