No Improvement of Repeated-Sprint Performance With Dietary Nitrate

Abstract

These findings suggest that dietary nitrate is not beneficial for improving repeated-sprint performance, at least when such sprints are near-maximal and frequent in nature. The lack of an effect of nitrate at near-maximal oxygen uptake supports the suggestion that at greater exercise intensities nitrate does not have an ergogenic effect.

Acute Dose of Beet Root Juice Does Not Improve Endurance Performance in Elite Triathletes

“…The lack of performance improvement post-NO 3 -supplementation in the current study is consistent with research conducted in trained cyclists and other trained athletes [4,13,14,15,18], although contrary to research in recreationally active/moderately trained individuals demonstrating improved exercise economy and performance [5,7,8,13,28]. When examining the group as a whole we did, however, observe that the distance and PO improved by 1.9% and 2.1% respectively, after consuming BRJ.…”

“…However, the majority of researches reporting exercise benefits of NO3 -supplementation have been conducted on moderately/recreationally active subjects, while findings are less clear in populations of elite athleticism [11]. The majority of studies in trained athletes have reported no exercise benefits in response to NO 3 -supplementation [4,[12][13][14][15], while several studies have reported benefits [3,4,16,17]. It has been speculated that exercise benefits in trained athletes may be blunted with NO 3 -supplementation since these individuals may have no need for further enhancement of their cardiovascular system as it is nearing physiological capacity [18].…”

Effects of Natural Nutritional Beverages on Anaerobic Exercise Performance

“…The beet juice group completed ~3.5% greater work than the placebo group (123 ± 19 kJ vs. 119 ± 17 kJ) across all sprints in the 80 min of exercise. As seen in other studies (Aucouturier et al, 2015;Martin, Smee, Thompson & Rattray, 2014;Thompson et al, 2015), the improved total work was not accompanied by any differences in mean total V̇O2 between the conditions (Thompson et al, 2015). vs. 15 ± 6), and less total work completed (49.2 ± 24.2 kJ vs. 57.8 ± 34 kJ).…”

“…(measured during the first 5 sprints only) was no different between the groups (Martin et al, 2014). Some trends emerge in the studies investigating NO3-'s effects on intermittent high intensity exercise.…”

Nitric oxide and hypoxia at adaptation to muscular work (brief review)

“…Поскольку по мере приближения нагрузки к VO 2max в условиях добавленного в диету нитрата не только улучшаются показатели утилизации кислорода, ко-торые происходят в медленных МВ, но и рекрутиру-ются БМВ-II с анаэробным механизмом энергопро-изводства, то K. Martin et al [64] сделали попытку изучения часто повторяющегося спринтерского упражнения в условиях воздействия нитрата (0,3 г NO 3 -в 70 мл СС). Их данные показывают, что диети-ческий нитрат не выгоден для усовершенствования выполнения повторного спринта в тех случаях, если эти спринтерские нагрузки по своей природе близки к максимуму по интенсивности и частоте предъяв-ления.…”