Habitual Dietary Nitrate Intake in Highly Trained Athletes

Kristin L. Jonvik, Jean Nyakayiru, Jan-Willem van Dijk, Floris C. Wardenaar, Luc J. C. van Loon, Lex B. Verdijk*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

24 Citations (Web of Science)

Abstract

Although beetroot juice, as a nitrate carrier, is a popular ergogenic supplement among athletes, nitrate is consumed through the regular diet as well. We aimed to assess the habitual dietary nitrate intake and identify the main contributing food sources in a large group of highly trained athletes. Dutch highly trained athletes (226 women and 327 men) completed 2-4 web-based 24-hr dietary recalls and questionnaires within a 2- to 4-week period. The nitrate content of food products and food groups was determined systematically based on values found in regulatory reports and scientific literature. These were then used to calculate each athlete's dietary nitrate intake from the web-based recalls. The median[IQR] habitual nitrate intake was 106[75-170] mg/d (range 19-525 mg/d). Nitrate intake correlated with energy intake (p = 0.28, p

Original languageEnglish
Pages (from-to)148-157
Number of pages10
JournalInternational Journal of Sport Nutrition and Exercise Metabolism
Volume27
Issue number2
DOIs
Publication statusPublished - Apr 2017

Keywords

  • food
  • vegetables
  • exercise performance
  • EXERCISE PERFORMANCE
  • GASTRIC-CANCER
  • BLOOD-PRESSURE
  • NITRIC-OXIDE
  • VEGETABLES
  • SUPPLEMENTATION
  • HUMANS
  • HEALTH
  • MUSCLE
  • MARKET

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