Carbohydrate-loading and exercise performance

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Bibliographische Detailangaben
Deutscher übersetzter Titel:Kohlenhydratspeicherung und sportliche Leistung
Autor:Hawley, J.A.; Schabort, E.J.; Noakes, T.D.; Dennis, S.C.
Erschienen in:Sports medicine
Veröffentlicht:24 (1997), 2, S. 73-81, Lit.
Format: Literatur (SPOLIT)
Publikationstyp: Zeitschriftenartikel
Medienart: Gedruckte Ressource Elektronische Ressource (online)
Sprache:Englisch
ISSN:0112-1642, 1179-2035
DOI:10.2165/00007256-199724020-00001
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Erfassungsnummer:PU199709207352
Quelle:BISp

Abstract des Autors

This review suggests that there is little or no effect of elevating pre-exercise muscle glycogen contents above normal resting values on a single exhaustive bout of high-intensity exercise lasting less than 5 minutes. Nor is there any benefit of increasing starting muscle glycogen content on moderate-intensity running or cycling lasting 60 to 90 minutes. In such exercise substantial quantities of glycogen remain in the working muscles at the end of exercise. However, elevated starting muscle glycogen content will postpone fatigue by ca. 20% in endurance events lasting more than 90 minutes. During this type of exercise, exhaustion usually coincides with critically low (25 mmol/kg wet weight) muscle glycogen contents, suggesting the supply of energy from glycogen utilisation cannot be replaced by an increased oxidation of blood glucose. Glycogen supercompensation may also improve endurance performance in which a set distance is covered as quickly as possible. In such exercise, high carbohydrate diets have been reported to improve performance by 2 to 3%. Verf.-Referat