Beetroot juice supplementation does not modify the 3-km running performance in untrained women

Castro, Talitha Fernandes de; Manoel, Francisco de Assis; Machado, Fabiana Andrade

doi:10.1016/j.scispo.2018.01.010

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…− supplementation on running TT performance in males has been addressed in several studies [32][33][34][35]38], and while some previous studies have assessed running performance in female subjects [30,36,37], independent effects in males and females were not reported in the latter group of studies, which has thwarted understanding of potential sex-specific effects of NO 3 − supplementation on performance. Moreover, the only study to assess the effects of BJ supplementation on performance in recreational female runners did not observe an improvement in 3 km TT performance [42]. However, the interpretation of this finding is confounded by the fact that the authors administered an acute BJ dose 30 min prior to the TT, which was insufficient time to allow plasma [NO 2 − ] to peak after NO 3…”

Section: Discussionmentioning

confidence: 96%

“…However, females present with a more oxidative skeletal muscle phenotype compared to males [41], which could blunt NO 2 − reduction to NO and the improvement in performance after NO 3 − supplementation. Although de Castro et al [42] reported no effect of acute NO 3 − supplementation on 3 km running TT performance in untrained women, the NO 3 − supplement was ingested 30 min prior to exercise such that plasma [NO 2 − ] would not have peaked until after the TT had been completed [43]. Therefore, further research is required to assess the potential for sex-specific effects on the efficacy of NO 3 − supplementation to improve running TT performance.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Sex and Acute Beetroot Juice Supplementation on 2 KM Running Performance

et al. 2021

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Purpose: To assess the effect of acute nitrate-rich (BJ) and nitrate-depleted (PL) beetroot juice ingestion on 2 km running performance in amateur runners, and to what extent the ergogenic effect of BJ supplementation would be influenced by the sex of the participants; Methods: Twenty-four amateur long-distance runners (14 males and 10 females) performed a 2 km time trial (TT) on an outdoor athletics track 2.5 h after ingesting either 140 mL of BJ (~12.8 mmol NO3−) or PL. After the tests, blood [lactate] and ratings of perceived exertion (RPE) related to the leg muscles (RPEmuscular), cardiovascular system (RPEcardio) and general overall RPE (RPEgeneral) were assessed; Results: Compared to PL, BJ supplementation improved 2 km TT performance in both males (p < 0.05) with no supplement × sex interaction effect (p > 0.05). This improvement in 2 km running performance was a function of improved performance in the second 1 km split time in both males and females (p < 0.05). Supplementation with BJ did not alter post-exercise blood [lactate] (p > 0.05) but lowered RPEgeneral (p < 0.05); Conclusions: acute BJ supplementation improves 2 km running performance in amateur runners by enhancing performance over the second half of the TT and lowering RPEgeneral by a comparable magnitude in males and females.

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Section: Discussionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Influence of Sex and Acute Beetroot Juice Supplementation on 2 KM Running Performance

et al. 2021

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“…More recently, inorganic nitrate (NO 3 − ) ingestion, often administered as concentrated NO 3 − -rich beetroot juice (BR), has been reported to confer ergogenic effects in various exercise modalities [35], including running [36][37][38][39][40][41][42][43][44][45][46][47], rowing [48,49], kayaking [50], knee extensions [37,51] and cycling [52][53][54][55][56][57][58][59][60][61][62][63][64]. Although an ergogenic effect of NO 3 − supplementation appears less likely in endurance-trained individuals, i.e., [65][66][67][68][69][70][71][72][73][74], recent systematic reviews support its efficacy as an ergogenic aid during continuous endurance-type exercise [75][76][77] and high-intensity intermittent-type exercise [78]. Dietary NO 3 − supplementation has been observed to elevate nitric oxide (NO) bioavailability via the reduction...…”

Section: Introductionmentioning

confidence: 99%

Effects of Dietary Nitrate Supplementation on Weightlifting Exercise Performance in Healthy Adults: A Systematic Review

et al. 2020

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Dietary nitrate (NO3−) supplementation has been evidenced to induce an ergogenic effect in endurance and sprint-type exercise, which may be underpinned by enhanced muscle contractility and perfusion, particularly in type II muscle fibers. However, limited data are available to evaluate the ergogenic potential of NO3− supplementation during other exercise modalities that mandate type II fiber recruitment, such as weightlifting exercise (i.e., resistance exercise). In this systematic review, we examine the existing evidence basis for NO3− supplementation to improve muscular power, velocity of contraction, and muscular endurance during weightlifting exercise in healthy adults. We also discuss the potential mechanistic bases for any positive effects of NO3− supplementation on resistance exercise performance. Dialnet, Directory of Open Access Journals, Medline, Pubmed, Scielo, Scopus and SPORT Discus databases were searched for articles using the keywords: nitrate or beetroot and supplement or nut*r or diet and strength or “resistance exercise” or “resistance training” or “muscular power”. Four articles fulfilling the inclusion criteria were identified. Two of the four studies indicated that NO3− supplementation could increase aspects of upper body weightlifting exercise (i.e., bench press) performance (increases in mean power/velocity of contraction/number of repetitions to failure), whereas another study observed an increase in the number of repetitions to failure during lower limb weightlifting exercise (i.e., back squat). Although these preliminary observations are encouraging, further research is required for the ergogenic potential of NO3− supplementation on weightlifting exercise performance to be determined.

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Acute effects of various doses of nitrate-rich beetroot juice on high-intensity interval exercise responses in women: a randomized, double-blinded, placebo-controlled, crossover trial

Jiaqi,

Zihan,

Heung-Sang Wong

et al. 2024

Journal of the International Society of Sports Nutrition

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Beetroot juice supplementation does not modify the 3-km running performance in untrained women

Cited by 5 publications

References 6 publications

Influence of Sex and Acute Beetroot Juice Supplementation on 2 KM Running Performance

Influence of Sex and Acute Beetroot Juice Supplementation on 2 KM Running Performance

Effects of Dietary Nitrate Supplementation on Weightlifting Exercise Performance in Healthy Adults: A Systematic Review

Acute effects of various doses of nitrate-rich beetroot juice on high-intensity interval exercise responses in women: a randomized, double-blinded, placebo-controlled, crossover trial

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