1. Dietary Inorganic Nitrate as an Ergogenic Aid : An Expert Consensus Derived via the Modified Delphi Technique.
- Author
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Shannon, Oliver M, Allen, Jason D, Bescos, Raul, Burke, Louise, Clifford, Tom, Easton, Chris, Gonzalez, Javier T, Jones, Andrew M, Jonvik, Kristin L, Larsen, Filip J, Peeling, Peter, Piknova, Barbora, Siervo, Mario, Vanhatalo, Anni, McGawley, Kerry, Porcelli, Simone, Shannon, Oliver M, Allen, Jason D, Bescos, Raul, Burke, Louise, Clifford, Tom, Easton, Chris, Gonzalez, Javier T, Jones, Andrew M, Jonvik, Kristin L, Larsen, Filip J, Peeling, Peter, Piknova, Barbora, Siervo, Mario, Vanhatalo, Anni, McGawley, Kerry, and Porcelli, Simone
- Abstract
INTRODUCTION: Dietary inorganic nitrate is a popular nutritional supplement, which increases nitric oxide bioavailability and may improve exercise performance. Despite over a decade of research into the effects of dietary nitrate supplementation during exercise there is currently no expert consensus on how, when and for whom this compound could be recommended as an ergogenic aid. Moreover, there is no consensus on the safe administration of dietary nitrate as an ergogenic aid. This study aimed to address these research gaps. METHODS: The modified Delphi technique was used to establish the views of 12 expert panel members on the use of dietary nitrate as an ergogenic aid. Over three iterative rounds (two via questionnaire and one via videoconferencing), the expert panel members voted on 222 statements relating to dietary nitrate as an ergogenic aid. Consensus was reached when > 80% of the panel provided the same answer (i.e. yes or no). Statements for which > 80% of the panel cast a vote of insufficient evidence were categorised as such and removed from further voting. These statements were subsequently used to identify directions for future research. RESULTS: The 12 panel members contributed to voting in all three rounds. A total of 39 statements (17.6%) reached consensus across the three rounds (20 yes, 19 no). In round one, 21 statements reached consensus (11 yes, 10 no). In round two, seven further statements reached consensus (4 yes, 3 no). In round three, an additional 11 statements reached consensus (5 yes, 6 no). The panel agreed that there was insufficient evidence for 134 (60.4%) of the statements, and were unable to agree on the outcome of the remaining statements. CONCLUSIONS: This study provides information on the current expert consensus on dietary nitrate, which may be of value to athletes, coaches, practitioners and researchers. The effects of dietary nitrate appear to be diminished in individuals with a higher aerobic fitness (peak oxygen consu
- Published
- 2022
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