Mouthwash after exercise significantly reduces the “blood pressure lowering effect” of exercise
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Research results have reported that rinsing the mouth with a bactericidal mouthwash after exercise significantly reduces the “blood pressure lowering effect” of exercise ”.
Post-exercise hypotension and skeletal muscle oxygenation is regulated by nitrate-reducing activity of oral bacteria-ScienceDirect
https://www.sciencedirect.com/science/article/abs/pii/S0891584919307610
Mouthwash use could inhibit benefits of exercise-ScienceDaily
https://www.sciencedaily.com/releases/2019/09/190903111242.htm
Mouthwash use could inhibit benefits of exercise, new research shows | EurekAlert! Science News
https://www.eurekalert.org/pub_releases/2019-09/uop-muc090319.php
When a person exercises, the heart rate increases and blood flow increases because oxygen is sent into the body. As blood flow increases, vascular endothelial cells produce and release nitric oxide , which dilates blood vessels, resulting in a reaction that causes the blood vessels to dilate to accommodate increased blood flow. Even if you stop exercising and your heart rate calms down, this vasodilatory effect continues, so your blood pressure drops after exercising. As a secondary effect, arteriosclerosis is less likely to occur because the blood vessels themselves become softer when they are expanded by nitric oxide. This mechanism is why it is said that exercise has an effect on arteriosclerosis.
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A paper published by a joint research team at the University of Plymouth in the United Kingdom and the Genome Control Center in Barcelona, Spain has confirmed experimentally that rinsing with a bactericidal mouthwash after exercise significantly reduces the vasodilatory effect. something like. The research team had 23 healthy subjects run as room runners , and then rinsed their mouths with a mouthwash with a bactericidal chlorhexidine concentration of 0.2% and measured blood pressure. As a control group , blood pressure was also measured in subjects who had their mouth rinsed with a non-bactericidal mouthwash after exercising under the same conditions.
As a result, the subject who rinsed his mouth with a mouthwash containing chlorhexidine had a blood pressure drop of 2.0 mmHg after 1 hour of exercise, but had returned to the original blood pressure after 2 hours of exercise. On the other hand, the subject who rinsed his mouth with a mouthwash without bactericidal action had a blood pressure drop of 5.2 mmHg after 1 hour of exercise, and the blood pressure remained 3.8 mmHg even after 2 hours of exercise.
By Prostock-studio
According to the research team, the result of this experiment is that the bactericidal mouthwash kills bacteria that produce ' nitrite ', the source of nitric oxide. When examining the blood of the subject after exercise, the subject who rinsed his mouth with a mouthwash without bactericidal activity had increased nitrite concentration in the blood, but the subject who rinsed his mouth with a mouthwash containing chlorhexidine It was also confirmed that there was no increase in nitrite concentration.
“It suggests that the activity of oral bacteria plays an important role in the body during exercise,” said Dr. Graig Cutler, a research team. “We plan to study the effects of oral bacteria on the movement of people at high risk for cardiovascular disease. Our study may improve the treatment of hypertension. Is there. '
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