Blood Glucose Regulation in an Insulin-Dependent Diabetic Backpacker

In brief: Glucose regulation in an insulin-dependent diabetic man during a six-day backpacking trip was compared to six days at home, where he ran about 5 miles daily. The energy expenditure of backpacking was estimated from an equation based on total weight (body plus pack), and the energy cost of running was determined from heart rate-oxygen uptake relationship. Insulin dosage was the same throughout, and food intake was altered to match the additional energy expenditure. Blood glucose values taken four times each day fluctuated less at home than in the mountains, but most mean values were consistent with recommended criteria for good diabetic control.