Beetroot juice supplementation speeds O2 uptake kinetics and improves exercise tolerance during severe-intensity exercise initiated from an elevated metabolic rate.
Am J Physiol Regul Integr Comp Physiol. 2013 Dec 15;305(12):R1441-50. doi: 10.1152/ajpregu.00295.2013. Epub 2013 Oct 2.
Am J Physiol Regul Integr Comp Physiol. 2013.
PMID: 24089377
Free article.
Clinical Trial.