The Effects of Chronic Nitrate Supplementation and the Use of Strong and Weak Antibacterial Agents on Plasma Nitrite Concentration and Exercise Blood Pressure

International Journal of Sports Medicine
S T J McDonaghAndrew M Jones

Abstract

Chlorhexidine-containing mouthwash (STRONG), which disturbs oral microflora, has been shown to diminish the rise in plasma nitrite concentration ([NO2-]) and attenuate the reduction in resting blood pressure (BP) typically seen after acute nitrate (NO3-) ingestion. We aimed to determine whether STRONG and weaker antiseptic agents attenuate the physiological effects of chronic NO3- supplementation using beetroot juice (BR). 12 healthy volunteers mouth-rinsed with STRONG, non-chlorhexidine mouthwash (WEAK) and deionised water (CON) 3 times a day, and ingested 70 mL BR (6.2 mmol NO3-), twice a day, for 6 days. BP (at rest and during 10 min of treadmill walking) and plasma and salivary [NO3-] and [NO2-] were measured prior to and on day 6 of supplementation. The change in salivary [NO3-] 4 h post final ingestion was higher (P<0.05) in STRONG (8.7±3.0 mM) compared to CON (6.3±0.9 mM) and WEAK (6.0±3.0 mM). In addition, the rise in plasma [NO2-] at 2 h was lower in STRONG compared with WEAK (by 89±112 nM) and CON (by 200±174 nM) and in WEAK compared with CON (all P<0.05). Changes in resting BP were not different between conditions (P>0.05). However, during treadmill walking, the increase in systolic and mean arterial BP was higher 4 ...Continue Reading

Citations

Mar 30, 2017·Current Hypertension Reports·Nathan S BryanNikola Angelov
May 18, 2017·Nutrition Research Reviews·Ann Ashworth, Raul Bescos
Feb 17, 2017·Journal of Nutrition and Metabolism·Joseph W BealsChristopher Bell
Mar 14, 2018·European Journal of Sport Science·Sinead T J McDonaghAndrew M Jones
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Jun 9, 2021·BMC Sports Science, Medicine and Rehabilitation·Oliver M ShannonTom Clifford
Feb 5, 2019·Nitric Oxide : Biology and Chemistry·Gustavo H Oliveira-PaulaJose E Tanus-Santos

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