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Beetroot

ENERGIZE INGREDIENT

Beetroot

ENERGIZE INGREDIENT

INGREDIENT RESEARCH

Endurance

Endurance

Increased Bloodflow

Increased Bloodflow

Nitrate Rich

Nitrate Rich

WHAT SCIENCE SAYS:

Dietary nitrate in beetroot improves oxygen delivery to working muscles that increases endurance.

Dietary nitrate in beetroot improves oxygen delivery to working muscles that increases endurance.

FUN FACT

The biggest beet in the world was grown by a Dutchman. It weighed over 156 pounds.

The biggest beet in the world was grown by a Dutchman. It weighed over 156 pounds.

Evidence Based Facts

Acute dietary nitrate supplementation improves cycling time trial performance

Katherine E Lansley 1 , Paul G Winyard, Stephen J Bailey, Anni Vanhatalo, Daryl P Wilkerson, Jamie R Blackwell, Mark Gilchrist, Nigel Benjamin, Andrew M Jones


PURPOSE:

Dietary nitrate supplementation has been shown to reduce the O2 cost of submaximal exercise and to improve high-intensity exercise tolerance. However, it is presently unknown whether it may enhance performance during simulated competition. The present study investigated the effects of acute dietary nitrate supplementation on power output (PO), VO2, and performance during 4- and 16.1-km cycling time trials (TT).


METHODS:

After familiarization, nine club-level competitive male cyclists were assigned in a randomized, crossover design to consume 0.5 L of beetroot juice (BR; containing ∼ 6.2 mmol of nitrate) or 0.5 L of nitrate-depleted BR (placebo, PL; containing ∼ 0.0047 mmol of nitrate), ∼ 2.5 h before the completion of a 4- and a 16.1-km TT.


RESULTS:

BR supplementation elevated plasma [nitrite] (PL = 241 ± 125 vs BR = 575 ± 199 nM, P < 0.05). The VO2 values during the TT were not significantly different between the BR and PL conditions at any elapsed distance (P > 0.05), but BR significantly increased mean PO during the 4-km (PL = 279 ± 51 vs BR = 292 ± 44 W, P < 0.05) and 16.1-km TT (PL = 233 ± 43 vs BR = 247 ± 44 W, P < 0.01). Consequently, BR improved 4-km performance by 2.8% (PL = 6.45 ± 0.42 vs BR = 6.27 ± 0.35 min, P < 0.05) and 16.1-km performance by 2.7% (PL = 27.7 ± 2.1 vs BR = 26.9 ± 1.8 min, P < 0.01).


CONCLUSIONS:

These results suggest that acute dietary nitrate supplementation with 0.5 L of BR improves cycling economy, as demonstrated by a higher PO for the same VO2 and enhances both 4- and 16.1-km cycling TT performance.

* These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.

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