The effect of free glutamine and peptide ingestion on the rate of muscle glycogen resynthesis in man
Deutscher übersetzter Titel: | Auswirkung der Einnahme von freiem Glutamin und Peptiden auf das Ausmass der Glykogenresynthese beim Menschen |
---|---|
Autor: | Hall, G. van; Saris, W.H.M.; Schoor, P.A.I. van de; Wagenmakers, Anton J.M. |
Erschienen in: | International journal of sports medicine |
Veröffentlicht: | 21 (2000), 1, S. 25-30, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 0172-4622, 1439-3964 |
DOI: | 10.1055/s-2000-10688 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199912404374 |
Quelle: | BISp |
Abstract des Autors
The present study investigated previous claims that ingestion of glutamine and of protein-carbohydrate mixtures may increase the rate of glycogen resynthesis following intense exercise. Eight trained subjects were studied during 3 h of recovery while consuming one of four drinks in random order. Drinks were ingested in three 500 ml boluses, immediately after exercise and then after 1 and 2 h of recovery. Each bolus of the control drink contained 0.8 g/kg body weight of glucose. The other drinks contained the same amount of glucose and 0.3 g/kg body weight of 1) glutamine, 2) a wheat hydrolysate (26% glutamine) and 3) a whey hydrolysate (6.6% glutamine). Plasma glutamine decreased by approximately 20% during recovery with ingestion of the control drink, no changes with ingestion of the protein hydrolysates drinks, and a 2-fold increase with ingestion of the free glutamine drinks. The rate of glycogen resynthesis was not significantly different in the four tests: 28+/-5, 26+/-6, 33+/-4, and 34+/-3 mmol glucosyl units/kg dry weight muscle/h for the control, glutamine, wheat- and whey hydrolysate ingestion, respectively. It is concluded that ingestion of a glutamine/carbohydrate mixture does not increase the rate of glycogen resynthesis in muscle. Glycogen resynthesis rates were higher, although not statistically significant, after ingestion of the drink, containing the wheat (21+/-8%) and whey protein hydrolysate (20+/-6%) compared to ingestion of the control and free glutamine drinks, implying that further research is needed on the potential protein effect. Verf.-Referat