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Preparation of Rat Skeletal Muscle Homogenates for Nitrate and Nitrite Measurements
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Dietary nitrate supplementation and exercise performance.

Andrew M Jones1

  • 1Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, St. Luke's Campus, Exeter, EX1 2LU, UK, a.m.jones@exeter.ac.uk.

Sports Medicine (Auckland, N.Z.)
|May 6, 2014
PubMed
Summary
This summary is machine-generated.

Dietary nitrate, found in vegetables like beetroot, can improve exercise performance. Supplementation increases nitrite levels, reducing the oxygen needed for exercise and enhancing tolerance.

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Area of Science:

  • Sports nutrition
  • Exercise physiology
  • Nutritional biochemistry

Background:

  • Dietary nitrate is increasingly popular as a sports supplement.
  • Found abundantly in green leafy vegetables and beetroot.
  • Inorganic nitrate converts to nitrite, then nitric oxide, impacting vascular and metabolic functions.

Purpose of the Study:

  • To review the evidence for inorganic nitrate's effect on sports and exercise performance.
  • To explore the mechanisms behind nitrate supplementation's benefits.
  • To provide guidelines for safe and effective nitrate supplementation.

Main Methods:

  • Review of existing scientific literature on dietary nitrate and exercise.
  • Analysis of studies measuring plasma nitrite, blood pressure, and exercise parameters.
  • Examination of physiological mechanisms related to nitric oxide production.

Main Results:

  • Dietary nitrate supplementation increases plasma nitrite levels.
  • Supplementation reduces resting blood pressure.
  • Nitrate intake reduces the oxygen cost of submaximal exercise and can enhance performance.

Conclusions:

  • Dietary nitrate shows potential for enhancing exercise performance and tolerance.
  • The conversion to nitric oxide is a key mechanism.
  • Practical guidelines are needed for safe and effective supplementation.