Carbohydrate Metabolism In U.s. Navy Submarine Personnel,

Abstract

One- and two-hour postprandial glucose and insulin values were measured in 58 submariners with 5 or more FBM patrols and in 58 non-submariners. An interrelationship between serum glucose and insulin for classifying defects in carbohydrate metabolism indicated that 55% of the submariners and 45% of the nonsubmariners exhibited some type of defects. Exercise appears to play an important role in the maintenance of normal carbohydrate metabolism in these subjects. Non-submariners reported engaging significantly more exercise than did submariners. Negative correlation between amount of exercise vs one- and two-hour glucose and two-hour insulin was significant for all subjects. An inverse relationship was observed between amount of exercise and the severity of carbohydrate metabolic defects in submariners and non-submariners as well as in normal weight and obese individuals. No statistical differences were found between the submariner and non-submariner groups with respect to age, % body fat, fatness (normal or obese), glycosylated hemoglobin, or family history of diabetes. Keywords include: Glucose metabolism; Carbohydrate metabolic defects; Insulin; Exercise; Submarine environments.