Exercise performance as a function of semi-solid and liquid carbohydrate feedings during prolonged exercise
Deutscher übersetzter Titel: | Koerperliche Leistung als Funktion halbfester oder fluessiger Kohlenhydratkost waehrend Ausdauerbelastung |
---|---|
Autor: | Peters, H.P.F.; Schelven, W.F. van; Verstappen, P.A.; Boer, R.W. de; Bol, E.; Erich, W.B.M.; Togt, C.R. van der; Vries, W.R. de |
Erschienen in: | International journal of sports medicine |
Veröffentlicht: | 16 (1995), 2, S. 105-113, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 0172-4622, 1439-3964 |
DOI: | 10.1055/s-2007-972974 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199509102842 |
Quelle: | BISp |
Abstract des Autors
Aim of this study was to examine the effects of a semi-solid and a liquid carbohydrate feeding on exercise performance. Thirty-two male triathletes performed three exercise trials (3 hours maximal at 75% VO2max) with either a semi-solid feeding (S), an iso-caloric liquid feeding (F) or a liquid placebo (P). Exercise consisted of cycling (bout 1 and 3) and running (bout 2 and 4). Survival analysis revealed that the median maximum test time (MTT) with F, S and P was 180, 126 and 120 min, respectively. Median MTT was longer with F than with S (sign-test; p<0.05) or P (p<0.001), with no difference between S and P. Mean power output during supra-maximal tests after bout 2 (W1) and at the end of exercise (W-end) were 371, 365, and 362 and 334, 332, 321 W with F, S and P, respectively. Differences between F and P were significant (p<0.01). Regression analysis identified five variables that were associated with 93% of the variance in MTT. The variance in W1 was explained for 83% by three variables. W-end was explained (90%) by three variables. A significant dietary contribution to MTT and W-end was found, but not to W1. This suggests that the influence of the feedings on performance is different among performance tests. Verf.-Referat