Journal article

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

Abstract

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..

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Grants

Funding Acknowledgements

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.