Influence of ingesting a carbohydrate-electrolyte solution before and during a 1-hour run in fed endurance-trained runners
Deutscher übersetzter Titel: | Der Einfluss der Aufnahme einer Kohlenhydrat-Elektrolyt-Lösung vor und während eines einstündigen Laufs bei ausdauertrainierten Läufern nach einer Mahlzeit |
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Autor: | Rollo, Ian; Williams, Clyde |
Erschienen in: | Journal of sports sciences |
Veröffentlicht: | 28 (2010), 6, S. 593-601, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0264-0414, 1466-447X |
DOI: | 10.1080/02640410903582784 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201104003369 |
Quelle: | BISp |
Abstract des Autors
The aim of this study was to determine whether the ingestion of a carbohydrate-electrolyte solution would improve 1-h running performance in runners who had consumed a meal 3 h before exercise. Ten endurance-trained male runners completed two trials that required them to run as far as possible in 1 h on an automated treadmill that allowed changes in running speed without manual input. Following the consumption of the pre-exercise meal, which provided 2.5 g carbohydrate per kilogram body mass (BM), runners ingested either a 6.4% carbohydrate-electrolyte solution or placebo solution (i.e. 8 ml · kg BM-1) 30 min before and 2 ml · kg BM-1 at 15-min intervals throughout the 1-h run. There were no differences in total distance covered (placebo: 13,680 m, s = 1525; carbohydrate: 13,589 m, s = 1635) (P > 0.05). Blood glucose and lactate concentration, respiratory exchange ratio, and carbohydrate oxidation during exercise were not different between trials (P > 0.05). There were also no differences in ratings of perceived exertion, felt arousal or pleasure-displeasure between trials (P > 0.05). In conclusion, the ingestion of a 6.4% carbohydrate-electrolyte solution did not improve 1-h running performance when a high carbohydrate meal was consumed 3 h before exercise. Verf.-Referat