The effects of ingesting a carbohydrate-electrolyte beverage 15 minutes prior to high-intensity exercise performance

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Deutscher übersetzter Titel:Die Wirkung der Aufnahme eines Kohlenhydrat-Elektrolyt-Getränks 15 Minuten vor einer hochintensiven Belastung auf die Leistung
Autor:Davison, G.W.; McClean, C.; Brown, J.; Madigan, S.; Gamble, D.; Trinick, T.; Duly, E.
Erschienen in:Research in sports medicine
Veröffentlicht:16 (2008), 3, S. 155-166, Lit.
Format: Literatur (SPOLIT)
Publikationstyp: Zeitschriftenartikel
Medienart: Gedruckte Ressource Elektronische Ressource (online)
Sprache:Englisch
ISSN:1543-8627, 1543-8635
DOI:10.1080/15438620802103155
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Erfassungsnummer:PU200903001200
Quelle:BISp

Abstract des Autors

The aim of this study was to examine the effect of ingesting a commercially available carbohydrate-electrolyte (CHO-E) solution on strenuous exercise performance. Ten apparently healthy male volunteers (Mean +/- SD; age 20 +/- 2 yrs; height 178 +/- 7 cm; body mass 77 +/- 10 kg; estimated VO2max 56 +/- 3 ml/kg/min) completed three experimental trials in random order separated by a minimum of 7 days. For each trial, subjects consumed (8 ml/kg body mass) either a CHO-E solution (6% carbohydrate, 50 mg Na/500 ml), a non-CHO-E placebo, or no fluid, 15 minutes prior to exercise. The exercise involved intermittent shuttle (20 m apart) running for 1 hr followed by an incremental shuttle running test to exhaustion. Subjects displayed longer exercise times when the CHO-E solution was ingested compared with placebo or no fluid groups (exercise time to exhaustion - CHO-E 649 +/- 95 s, vs. placebo 601 +/- 83 s, vs. no fluid 593 +/- 107 s, P<0.05). There was a main effect for time for specific gravity of urine (P<0.05 vs. postexercise, pooled data) and body mass (P<0.05 vs. postexercise, pooled data). The main finding from this investigation indicates that drinking a CHO-E solution 15 minutes prior to exercise improves performance. This study has practical implications for those sports where drinking during activity is restricted. Verf.-Referat