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Dietary nitrate and O₂ consumption during exercise

, : Dietary nitrate and O₂ consumption during exercise. Medicine and Sport Science 59: 29-35

Recent studies have investigated the influence of dietary nitrate supplementation on the physiological responses to exercise. Specifically, it has been reported that enhancing nitric oxide (NO) bioavailability through supplementation of the diet with nitrate salts or nitrate-rich beetroot juice reduces the O(2) cost of exercise and improves exercise performance. The lower O(2) cost for a given sub-maximal work rate following nitrate ingestion indicates that muscle efficiency is enhanced either as a consequence of a reduced energy cost of contraction or enhanced mitochondrial efficiency. The positive effects of nitrate supplementation on the O(2) cost of sub-maximal exercise can be manifested acutely (i.e. 2.5 h following ingestion) and maintained for at least 15 days if supplementation is continued. Most recently, the influence of dietary nitrate supplementation on time trial performance in competitive cyclists has been investigated. Studies have shown a 1-2% reduction in the time to complete time trial distances between 4 and 16 km. The dose of nitrate that has been shown to improve exercise efficiency can readily be achieved through the consumption of 0.5 litre of beetroot juice or an equivalent high-nitrate foodstuff. Following a 5- to 6-mmol bolus of nitrate, plasma [nitrite] typically peaks within 2-3 h and remains elevated for a further 6-9 h before declining towards baseline. Therefore, consuming nitrate approximately 3 h prior to competition or training is recommended if athletes wish to explore the ergogenic potential of nitrate supplementation.


PMID: 23075552

DOI: 10.1159/000342062

Other references

Bauer, M.; Hussl, H.; Anderl, H.; Wilflingseder, P., 1974: Principles, methods and results of treatment of frontal bone defects. Der Chirurg; Zeitschrift für Alle Gebiete der Operativen Medizen 45(11): 514-518

Sinclair, David-Patrick, 2000: Two new genera of Tessaratomidae (Hemiptera: Heteroptera: Pentatomoidea). Two new genera of the shield bug family Tessaratomidae are described and illustrated. Tibiospina gen. nov., with the type species T. darlingtoni sp. nov., is from several higher altitude rainforest localities in the Wet Tropics region of north Que...

Huba, G.J.; Lawlor, W.G.; Stallone, F.; Fieve, R.R., 1976: The use of autocorrelation analysis in the longitudinal study of mood patterns in depressed patients. The statistical method of autocorrelation, commonly used in econometrics and engineering, was applied to the daily mood scores of ten depressive hospital in-patients. The analyses made possible the quantification of two aspects of the longitudinal...

Halwer, M.; Nutting, G.C.; Brice, B.A., 1951: Molecular weight of lactoglobulin, ovalbumin, lysozyme and serum albumin by light scattering. The molecular weight of beta -lactoglobulin was 35, 700 when calculated from light scattering measurements made with a photoelectric turbidimeter.

Hillarp, N.A.; Olivecrona, H., 2011: The rôle played by the axon and the Schwann cells in the degree of myelination of the peripheral nerve fibre. Acta Anatomica 2(1): 17-32

McCullagh, K.G.; Goodship, A.E.; Silver, I.A., 1979: Tendon injuries and their treatment in the horse. Predisposing factors and the pathology of tendon injuries are described. Various treatments from firing and counterirritants to tendon-splitting, transplants, and the use of Teflon or carbon fibres are discussed. The prime importance of prolonged...

Kopec, B., 1961: The current state of production in the Western Provinces of Poland. This article shows the developmental tendencies and agricultural efficiency of the Western Provinces. After a discussion on the conditions of agricultural production i.e. soil, climate, population and agrarian structure, the author gives an analys...

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Getahun Aberra; Reed Mark H., 1993: Chemical composition variations in zoned alteration in the Summitville acid-sulfate system. Abstracts with Programs - Geological Society of America 25(5): 41

Chen, H.; Jimbow, K., 1996: Involvement of phosphatidylinositol 3-kinase activity in the sorting and transport of newly synthesized tyrosinase-related protein-1 in melanogenesis. Pigment Cell Research 0(SUPPL 5): 30