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Effects of dietary nitrate supplementation on weightlifting exercise performance in healthy adults: a systematic review

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posted on 24.11.2020, 16:26 by Alejandro San Juan, Raul Dominguez, Ángel Lago-Rodríguez, Juan Montoya, Rachel Tan, Stephen BaileyStephen Bailey
Dietary nitrate (NO3) supplementation has been evidenced to induce an ergogenic effect in endurance and sprint-type exercise, which may be underpinned by enhanced muscle contractility and perfusion, particularly in type II muscle fibers. However, limited data are available to evaluate the ergogenic potential of NO3 supplementation during other exercise modalities that mandate type II fiber recruitment, such as weightlifting exercise (i.e., resistance exercise). In this systematic review, we examine the existing evidence basis for NO3 supplementation to improve muscular power, velocity of contraction, and muscular endurance during weightlifting exercise in healthy adults. We also discuss the potential mechanistic bases for any positive effects of NO3 supplementation on resistance exercise performance. Dialnet, Directory of Open Access Journals, Medline, Pubmed, Scielo, Scopus and SPORT Discus databases were searched for articles using the keywords: nitrate or beetroot and supplement or nut*r or diet and strength or “resistance exercise” or “resistance training” or “muscular power”. Four articles fulfilling the inclusion criteria were identified. Two of the four studies indicated that NO3 supplementation could increase aspects of upper body weightlifting exercise (i.e., bench press) performance (increases in mean power/velocity of contraction/number of repetitions to failure), whereas another study observed an increase in the number of repetitions to failure during lower limb weightlifting exercise (i.e., back squat). Although these preliminary observations are encouraging, further research is required for the ergogenic potential of NO3 supplementation on weightlifting exercise performance to be determined.

History

School

  • Sport, Exercise and Health Sciences

Published in

Nutrients

Volume

12

Issue

8

Publisher

MDPI AG

Version

VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

This is an Open Access Article. It is published by MDPI under the Creative Commons Attribution 4.0 International Licence (CC BY 4.0). Full details of this licence are available at: https://creativecommons.org/licenses/by/4.0/

Acceptance date

23/07/2020

Publication date

2020-07-26

Copyright date

2020

ISSN

2072-6643

eISSN

2072-6643

Language

en

Depositor

Dr Stephen Bailey. Deposit date: 23 November 2020

Article number

2227