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Dietary nitrate improves sprint performance and cognitive function during prolonged intermittent exercise.

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Summary
This summary is machine-generated.

Dietary nitrate supplementation improved exercise performance and cognitive function in athletes. Beetroot juice, rich in nitrate, enhanced sprint work and reaction time during intermittent exercise.

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Area of Science:

  • Sports Science
  • Nutritional Science
  • Exercise Physiology

Background:

  • Dietary nitrate (NO3(-)) may enhance physical and cognitive performance.
  • This effect is potentially mediated by improved blood flow and cellular energetics.

Purpose of the Study:

  • To examine the impact of dietary nitrate supplementation on exercise performance.
  • To assess the effects on cognitive function during a simulated team sport intermittent sprint test (IST).

Main Methods:

  • A double-blind, randomized crossover study involving 16 male team-sport players.
  • Participants consumed nitrate-rich (BR) or nitrate-depleted (PL) beetroot juice for 7 days.
  • On day 7, subjects performed an intermittent sprint test with simultaneous cognitive tasks.

Main Results:

  • Total work completed during sprints was significantly higher with nitrate-rich beetroot juice (BR) compared to placebo (PL).
  • Reaction time to cognitive tasks improved in the second half of the IST with BR supplementation.
  • No significant difference in cognitive task response accuracy was observed between groups.

Conclusions:

  • Dietary nitrate supplementation enhances repeated sprint performance in team-sport athletes.
  • Nitrate supplementation may help maintain cognitive function, specifically reaction time, during prolonged intermittent exercise.