Effects of nitrate on the power-duration relationship for severe-intensity exercise.

  title={Effects of nitrate on the power-duration relationship for severe-intensity exercise.},
  author={James F. Kelly and Anni Vanhatalo and Daryl P. Wilkerson and Lee J. Wylie and Andrew M. Jones},
  journal={Medicine and science in sports and exercise},
  volume={45 9},
PURPOSE The power asymptote (critical power [CP]) and curvature constant (W') of the power-duration relationship dictate the tolerance to severe-intensity exercise. We tested the hypothesis that dietary nitrate supplementation would increase the CP and/or the W' during cycling exercise. METHODS In a double-blind, randomized, crossover study, nine recreationally active male subjects supplemented their diet with either nitrate-rich concentrated beetroot juice (BR; 2 × 250 mL·d, ∼8.2 mmol·d… 

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