n/a
Abstract Title:

Beetroot supplementation improves the physiological responses to incline walking.

Abstract Source:

Eur J Appl Physiol. 2018 Jun ;118(6):1131-1141. Epub 2018 Mar 15. PMID: 29546639

Abstract Author(s):

Mark Waldron, Luke Waldron, Craig Lawlor, Adrian Gray, Jamie Highton

Article Affiliation:

Mark Waldron

Abstract:

PURPOSE: We investigated the effects of an acute 24-h nitrate-rich beetroot juice supplement (BR) on the energy cost, exercise efficiency and blood pressure responses to intermittent walking at different gradients.

METHODS: In a double-blind, cross-over design, eight participants were provided with a total of 350 ml of nitrate-rich (~ 20.5 mmol nitrate) BR or placebo (PLA) across 24 h before completing intermittent walking at 3 km/h on treadmill at gradients of 1, 5, 10, 15 and 20%.

RESULTS: Resting mean arterial pressure (MAP) was ~ 4.1% lower after BR (93 vs. 89 mmHg; P = 0.001), as well as during exercise (102 vs. 99 mmHg; P = 0.011) and recovery (97 vs. 94 mmHg; P = 0.001). Exercising (1227 vs. 1129 ml/min P < 0.001) and end-stage (1404 vs. 1249 ml/min; P = 0.002) oxygen uptake ([Formula: see text]O) was lower in BR compared to PLA, which was accompanied by an average reduction in phase II [Formula: see text]Oamplitude (1067 vs. 940 ml/min; P = 0.025). Similarly, recovery [Formula: see text]O(509 vs. 458 ml/min; P = 0.001) was lower in BR. Whole blood potassium concentration increased from pre-post exercise in PLA (4.1 ± 0.3 vs. 4.5 ± 0.3 mmol/L; P = 0.013) but not BR (4.1 ± 0.31 vs. 4.3 ± 0.2 mmol/L; P = 0.188).

CONCLUSIONS: Energy cost of exercise, recovery of [Formula: see text]O, MAP and blood markers were ameliorated after BR. Previously-reported mechanisms explain these findings, which are more noticeable during less-efficient walking at steep gradients (15-20%). These findings have practical implications for hill-walkers.

Study Type : Human Study
Additional Links
Therapeutic Actions : Exercise : CK(4855) : AC(921)

Print Options


Key Research Topics

This website is for information purposes only. By providing the information contained herein we are not diagnosing, treating, curing, mitigating, or preventing any type of disease or medical condition. Before beginning any type of natural, integrative or conventional treatment regimen, it is advisable to seek the advice of a licensed healthcare professional.

© Copyright 2008-2024 GreenMedInfo.com, Journal Articles copyright of original owners, MeSH copyright NLM.