The impact of beetroot juice supplementation on muscular endurance, maximal strength and countermovement jump performance
Journal article
Jonvik, Kristin L., Hoogervorst, Daan, Peelen, Harmen B., de Niet, Mark, Verdijk, Lex B., van Loon, Luc J. C. and van Dijk, Jan-Willem. (2021). The impact of beetroot juice supplementation on muscular endurance, maximal strength and countermovement jump performance. European Journal of Sport Science. 21(6), pp. 871-878. https://doi.org/10.1080/17461391.2020.1788649
Authors | Jonvik, Kristin L., Hoogervorst, Daan, Peelen, Harmen B., de Niet, Mark, Verdijk, Lex B., van Loon, Luc J. C. and van Dijk, Jan-Willem |
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Abstract | Purpose: Dietary nitrate has been shown to enhance muscle contractile function and has, therefore, been linked to increased muscle power and sprint exercise performance. However, the impact of dietary nitrate supplementation on maximal strength, performance and muscular endurance remains to be established. Methods: Fifteen recreationally active males (25 ± 4 y, BMI 24 ± 3 kg/m2) participated in a randomized double-blinded cross-over study comprising two 6-d supplementation periods; 140 mL/d nitrate-rich (BR; 985 mg/d) and nitrate-depleted (PLA; 0.37 mg/d) beetroot juice. Three hours following the last supplement, we assessed countermovement jump (CMJ) performance, maximal strength and power of the upper leg by voluntary isometric (30° and 60° angle) and isokinetic contractions (60, 120, 180 and 300°·s−1), and muscular endurance (total workload) by 30 reciprocal isokinetic voluntary contractions at 180°·s−1. Results: Despite differences in plasma nitrate (BR: 879 ± 239 vs. PLA: 33 ± 13 μmol/L, P < 0.001) and nitrite (BR: 463 ± 217 vs. PLA: 176 ± 50 nmol/L, P < 0.001) concentrations prior to exercise testing, CMJ height (BR: 39.3 ± 6.3 vs. PLA: 39.6 ± 6.3 cm; P = 0.39) and muscular endurance (BR: 3.93 ± 0.69 vs. PLA: 3.90 ± 0.66 kJ; P = 0.74) were not different between treatments. In line, isometric strength (P > 0.50 for both angles) and isokinetic knee extension power (P > 0.33 for all velocities) did not differ between treatments. Isokinetic knee flexion power was significantly higher following BR compared with PLA ingestion at 60°·s−1 (P = 0.001), but not at 120°·s−1 (P = 0.24), 180°·s−1 (P = 0.066), and 300°·s−1 (P = 0.36). Conclusion: Nitrate supplementation does not improve maximal strength, countermovement jump performance and muscular endurance in healthy, active males. |
Keywords | exercise; fitness; musculoskeletal; nutrition |
Year | 2021 |
Journal | European Journal of Sport Science |
Journal citation | 21 (6), pp. 871-878 |
Publisher | Taylor & Francis |
ISSN | 1746-1391 |
Digital Object Identifier (DOI) | https://doi.org/10.1080/17461391.2020.1788649 |
Scopus EID | 2-s2.0-85088310531 |
Open access | Published as green open access |
Research or scholarly | Research |
Page range | 871-878 |
Author's accepted manuscript | License File Access Level Open |
Publisher's version | License All rights reserved File Access Level Controlled |
Output status | Published |
Publication dates | |
Online | 12 Jul 2020 |
Publication process dates | |
Accepted | 29 Jun 2020 |
Deposited | 09 Aug 2021 |
https://acuresearchbank.acu.edu.au/item/8w902/the-impact-of-beetroot-juice-supplementation-on-muscular-endurance-maximal-strength-and-countermovement-jump-performance
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License: CC BY-NC-ND 4.0 | |
File access level: Open |
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