Effect of glucose polymer ingestion on energy and fluid balance during exercise
B Kingwell, MJ McKenna, ER Sandstrom, M Hargreaves
JOURNAL OF SPORTS SCIENCES | TAYLOR & FRANCIS LTD | Published : 1989
Nine male triathletes were studied during 160 min of exercise at 65% VO2 max on two occasions to examine the effect of glucose polymer ingestion on energy and fluid balance. During one trial they received 200 ml of a 10% glucose polymer solution at 20 min intervals during exercise (CHO), while in the other they received an equal volume of a sweet placebo (CON). On average, blood glucose levels (CON = 4.2 +/- 0.2 mmol l-1, CHO = 4.8 +/- 0.1, mean +/- S.E.) and respiratory exchange ratios (CON = 0.84 +/- 0.01, CHO = 0.87 +/- 0.01) during exercise were higher (P less than 0.05) as a result of the glucose polymer ingestion. There were no differences between trials, however, in the estimated plas..View full abstract
We appreciate the assistance of Dr S.L. Skinner. This study was supported, in part, by a grant from Abbott, Australasia. M.H. was supported by the National Health and Medical Research Council of Australia.