Beetroot Juice for Sprint Power: What the Evidence Shows

Beetroot juice may help you reach peak sprint power faster. It probably will not raise that peak.

That distinction gets lost when supplements meet marketing. For recreationally active adults completing 30-second cycling sprints, the best sprint-specific pooled evidence found a statistically significant, small improvement in time to peak power. It did not find significant pooled improvements in peak, mean, or minimum power output.

So beetroot juice has a narrow case as a sprint aid: it may slightly shorten the time needed to hit your best output. That could matter in some events. It is not evidence that a beet shot turns every sprint into a bigger wattage number.

The main evidence comes from Tan et al.'s 2024 systematic review and meta-analysis. The review was preregistered, followed PRISMA methods, used random-effects models and Hedges' g, and focused only on recreationally active adults doing 30-second high-intensity cycling sprints. Of four sprint outcomes, only time to peak power reached statistical significance; the authors described the effect as small. Peak power, mean power, and minimum power did not.

The available publication text does not provide extractable per-metric effect sizes or 95% confidence intervals. That prevents a more precise estimate of how much faster athletes reached peak power. It does not change the pattern of the results: the positive finding was selective, not a global increase in sprint performance.

Why nitrate could affect a sprint at all

Beetroot juice supplies dietary nitrate. Oral bacteria convert nitrate to nitrite, and the body can then form nitric oxide. Nitric oxide has plausible effects on muscle function, including type II muscle fibers, which contribute heavily during hard, brief efforts. A 2021 HIIT meta-analysis by Wong et al. reported small positive effects across several high-intensity interval outcomes and discussed calcium handling in type II fibers as one possible explanation.

Plausible biology is not proof of the exact mechanism in a 30-second maximal sprint. The sprint-specific explanation remains unsettled: nitric-oxide signaling and calcium sensitization are candidates, but much of the mechanistic evidence comes from animal work, submaximal exercise, or other contexts. A biochemical pathway can explain a result; it cannot rescue a result that has not replicated.

An isotonic beet drink produced a different result

A small trial raises an interesting practical question: can the drink's formulation change the response? In a 2024 double-blind, randomized crossover trial by Wong et al., 23 physically active adults (17 men and six women; mean age 26 years) consumed either an isotonic beetroot drink or standard beetroot juice three hours before exercise. Both drinks supplied 12.9 mmol of nitrate and 6.1 g of carbohydrate per 100 mL. The isotonic drink measured 315 mOsm/kg, versus 420 mOsm/kg for standard juice.

Peak power was 3.9% higher after the isotonic drink: 11.4 ± 2.5 versus 11.0 ± 2.3 W/kg, with p=0.04. Salivary NOx was also higher with the isotonic drink. Yet time to peak power did not differ (p=0.62), and neither did mean power (p=0.37).

That result points in the opposite direction from the sprint meta-analysis. The pooled analysis found a small benefit for time to peak power, while this trial found its only positive result for peak power. The difference may reflect formulation and bioavailability, but it may also reflect ordinary uncertainty in a 23-person study.

Most importantly, the trial did not include a nitrate-depleted placebo. It compared two nitrate-containing drinks. It therefore cannot tell us whether the result came from nitrate itself, a lower-osmolality effect on nitrate availability, carbohydrate-related effects, or chance. The p=0.04 result is statistically significant by conventional standards, but it is borderline and needs replication. Do not pay a large premium for an isotonic beetroot product on this evidence alone.

Who is most likely to respond?

Training status appears to matter more than label design. A 2022 systematic review with meta-analyses and meta-regressions by Silva et al. identified training status, dose, and biological sex as moderators of nitrate's exercise effects. Trained participants showed smaller or absent responses. A 2025 umbrella review by Tian et al. reached the same broad conclusion: beetroot juice more consistently improves performance in recreationally active people than in professional athletes.

One proposed reason is that highly trained athletes already have stronger endogenous nitric oxide synthase activity and better muscle oxygen extraction, leaving less room for supplemental nitrate to add anything measurable. That is a reasonable explanation, not a measured cutoff. No study has established the training level at which nitrate stops helping.

Sport also matters. The cycling-sprint meta-analysis cannot settle whether beetroot improves a combat athlete's repeated bursts, a soccer player's late-game sprint, or a lifter's bar speed. A 2023 systematic review of combat-sport trials concluded that the available evidence could not support firm conclusions. Different sports impose different effort durations, technical demands, and training histories.

Women should not be treated as a footnote

The strongest pooled sprint evidence came largely from male participants, and the isotonic trial did not report sex-stratified results. That matters because sex appears to modify the nitrate response. A 2025 systematic review and meta-analysis focused on females found that nitrate did not produce uniform improvements in strength, power, and sprint outcomes.

In a 2024 randomized, double-blind, placebo-controlled crossover trial in women, different acute doses of nitrate-rich beetroot juice produced dose-dependent null results below a threshold during high-intensity interval exercise. The study does not establish a universal female dose, but it does show why a mixed-sex average can hide different responses. Older women may differ again: an experimental study in 18 women aged about 70 found age- and sex-specific effects of acute nitrate on muscle fatigue and recovery.

What to do with the evidence

If you are recreationally active and want to test beetroot juice before short cycling sprints, an acute dose of roughly 6.4 to 13 mmol of nitrate, taken about two to three hours before exercise, matches the range used in current research. A 2025 crossover trial in physically active adults also reported benefits for strength, fatigue, and recovery with short-term supplementation, although those outcomes are not interchangeable with a 30-second sprint result.

• Use the upper end of the studied range cautiously if you are a woman, since lower doses produced null responses in the female HIIT trial.
• Avoid antiseptic mouthwash around supplementation. Oral bacteria drive nitrate-to-nitrite conversion, and variation in oral microbiota, recent antibiotics, diet, and mouthwash use likely contributes to mixed trial results.
• Test it in training first. Individual response varies, and the average effect on time to peak power was small.
• If you are trained or elite, expect little. The current evidence does not support a reliable ergogenic effect in that group.

Timing may also affect nitrate metabolism because salivary flow and oral pH influence bacterial nitrate reduction. A 2024 timing study in young men supports the idea that the ingestion window can change nitrate handling, though it does not prove a particular timing strategy improves sprint power in everyone.

Beetroot juice earns a modest, specific claim for recreational sprint cyclists: it may help them reach peak power a little sooner. Current pooled evidence does not show that it raises peak, average, or minimum sprint power.

The next useful study would compare isotonic and standard beetroot drinks with a placebo, enroll enough participants to analyze women and men separately, and control oral-microbiota variables under a standardized Wingate protocol. Until then, beetroot juice is a reasonable experiment for recreational athletes who care about a small timing effect—not a reliable shortcut to bigger sprint power.