The effects of a pre-exercise feeding with or without fungal carbohydrases (Carbogen) on blood parameters and exercise performance in elite cyclists: a preliminary study
| Autor: | Charles P. Lambert, Janine T. Baer, Mark L. Anderson, Laura Lewis Frank |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Adult
Blood Glucose Male medicine.medical_specialty Meal replacement Glycoside Hydrolases medicine.medical_treatment Physical Exertion Medicine (miscellaneous) Blood sugar Carbohydrate metabolism Placebo chemistry.chemical_compound Double-Blind Method Carbogen Internal medicine medicine Dietary Carbohydrates Humans Insulin Orthopedics and Sports Medicine Exercise Analysis of Variance Nutrition and Dietetics business.industry General Medicine Lactic acid Bicycling Endocrinology chemistry Exercise Test Lactates business Cycling Energy Metabolism |
| Zdroj: | International journal of sport nutrition and exercise metabolism. 12(3) |
| ISSN: | 1526-484X |
| Popis: | The effect of fungal carbohydrases (Carbogen™ [C]) consumed with a meal replacement bar (MBR) on glucose metabolism and exercise performance was determined in 5 male competitive cyclists. After a 12-hour fast, subjects performed two 60-min cycling bouts at 80% V̇O2max followed by a time-to-exhaustion (TE) ride at 100% V̇O2max. One hour prior to each cycling bout, subjects ingested a MRB + 160-mg C or 160-mg CaCO3 placebo (PL) in a double-blind, counterbalanced fashion. Blood was drawn for determination of glucose, insulin, and lactate at: fasting, 1 hour post-feeding, minutes 30 and 60 of exercise, and after TE. Two-way ANOVA revealed a significant (p < .05) treatment and time effect for glucose, with C being higher than PL. Interaction effects were ob-· served for insulin and lactate. An increase in TE (min) at 100% V̇O2max was observed in the C versus PL trial (6.3 ± 3.4 vs. 4.4 ± 2.9, p < .001). A MRB+C may benefit cyclists due to increased BG and improved exercise performance. |
| Databáze: | OpenAIRE |
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