Glutamine and carbohydrate supplements reduce ammonemia increase during endurance field exercise
Deutscher übersetzter Titel: | Glutamin- und Kohlenhydratergänzungspräparate reduzieren die Zunahme der Blut-Ammoniakkonzentration während Ausdauerbelastungen |
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Autor: | Carvalho-Peixoto, Jacqueline; Alves, Robson Cardilo; Cameron, Luiz-Cláudio |
Erschienen in: | Applied physiology, nutrition, and metabolism |
Veröffentlicht: | 32 (2007), 6, S. 1186-1190, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 1715-5312, 1715-5320 |
DOI: | 10.1139/H07-091 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201802000948 |
Quelle: | BISp |
Abstract des Autors
Blood ammonia concentration increases during endurance exercise and has been proposed as a cause for both peripheral and central fatigue. We examined the impact of glutamine and (or) carbohydrate supplementation on ammonemia in high-level runners. Fifteen men in pre-competitive training ran 120 min (~34 km) outdoors on 4 occasions. On the first day, the 15 athletes ran without the use of supplements and blood samples were taken every 30 min. After that, each day for 4 d before the next 3 exercise trials, we supplemented the athletes’ normal diets in bolus with carbohydrate (1 g•kg–1•d–1), glutamine (70 mg•kg–1•d–1), or a combination of both in a double-blind study. Blood ammonia level was determined before the run and every 30 min during the run. During the control trial ammonia increased progressively to approximately 70% above rest concentration. Following supplementation, independent of treatment, ammonia was not different (p > 0.05) for the first 60 min, but for the second hour it was lower than in the control (p < 0.05). Supplementation in high-level, endurance athletes reduced the accumulation of blood ammonia during prolonged, strenuous exercise in a field situation.