Metabolic studies in physically outstanding elderly men.
Forty-seven elderly men engaged in regular and vigorous exercise had significantly lower plasma insulin levels during oral glucose tolerance tests than their controls. Pasma-glucose and growth-hormone levels showed no difference. However, when the glucose tolerance test was extended to four hours follow up, for which 19 subjects of each group volunteered, the control subjects showed a blunted post-suppression recovery of growth-hormone secretion in comparison to the athletic group. This difference could be explained by differences in hypothalamic control of the pituitary.
D000368:Aged; D001786:Blood Glucose / Q000032:analysis; D001827:Body Height; D001835:Body Weight; D050260:Carbohydrate Metabolism; D005951:Glucose Tolerance Test; D013006:Growth Hormone / Q000097:blood / Q000378:metabolism; D006801:Humans; D007328:Insulin / Q000097:blood; D008297:Male; D005082:Physical Exertion; D010809:Physical Fitness; D012923:Social Class; D013177:Sports; D013178:Sports Medicine; D013550:Swimming
D001786:Blood Glucose; D007328:Insulin; D013006:Growth Hormone