“Beet-ing” the mountain : a review of the physiological and performance effects of dietary nitrate supplementation at simulated and terrestrial altitude

Gespeichert in:
Bibliographische Detailangaben
Deutscher übersetzter Titel:“Bewältigen eines Berges” : eine Literaturübersicht der physiologischen und Leistungseffekte der Nahrungsergänzung mit Nitrat bei simulierter und terrestrischer Höhe
Autor:Shannon, Oliver Michael; McGawley, Kerry; Nybäck, Linn; Duckworth, Lauren C.; Barlow, Matthew John; Woods, David; Siervo, Mario; O’Hara, John Paul
Erschienen in:Sports medicine
Veröffentlicht:47 (2017), 11, S. 2155-2169, Lit.
Format: Literatur (SPOLIT)
Publikationstyp: Zeitschriftenartikel
Medienart: Elektronische Ressource (online) Gedruckte Ressource
Sprache:Englisch
ISSN:0112-1642, 1179-2035
DOI:10.1007/s40279-017-0744-9
Schlagworte:
Online Zugang:
Erfassungsnummer:PU201801000070
Quelle:BISp

Abstract des Autors

Exposure to altitude results in multiple physiological consequences. These include, but are not limited to, a reduced maximal oxygen consumption, drop in arterial oxygen saturation, and increase in muscle metabolic perturbations at a fixed sub-maximal work rate. Exercise capacity during fixed work rate or incremental exercise and time-trial performance are also impaired at altitude relative to sea level. Recently, dietary nitrate (NO3−) supplementation has attracted considerable interest as a nutritional aid during altitude exposure. In this review, we summarise and critically evaluate the physiological and performance effects of dietary NO3− supplementation during exposure to simulated and terrestrial altitude. Previous investigations at simulated altitude indicate that NO3− supplementation may reduce the oxygen cost of exercise, elevate arterial and tissue oxygen saturation, improve muscle metabolic function, and enhance exercise capacity/performance. Conversely, current evidence suggests that NO3− supplementation does not augment the training response at simulated altitude. Few studies have evaluated the effects of NO3− at terrestrial altitude. Current evidence indicates potential improvements in endothelial function at terrestrial altitude following NO3− supplementation. No effects of NO3− supplementation have been observed on oxygen consumption or arterial oxygen saturation at terrestrial altitude, although further research is warranted. Limitations of the present body of literature are discussed, and directions for future research are provided.