Millions of Americans are vulnerable to stroke if they exercise too strenuously, study suggests.
Researchers found that people with carotid artery stenosis, which affects about 5% of the population, are at risk of sudden blood clots in the brain caused by light activities such as brisk walking, swimming and even Zumba.
During vigorous exercise, plaque in the arteries can dislodge and travel to the brain, where it blocks the blood vessel and causes a stroke.
That means 16.5 million Americans may have to give up exercise.
Strong train can increase risk of stroke, check advice (Stock)
The image above shows a carotid artery with plaques (left) and without plaques (right). Everyone has two carotid arteries that go to both sides of the neck (pictured)
Carotid artery stenosis is a condition where plaque builds up in the carotid arteries, narrowing the area through which blood travels.
These arteries run through the neck and are responsible for supplying blood to the brain and facial components that contain important vitamins and oxygen.
A sudden increase in blood pressure, comparable to a full train, can cause the detachment of plaques, which can lead to a stroke.
The number of Americans with carotid artery stenosis has risen sharply over the past two decades, figures show.
In the early 2000s, it was estimated that about two million Americans had this condition. But now Cleveland Clinic says that about 5% of all adults have this condition — or 16.5 million people.
Being under or overweight is a serious situational hazard, scientists say. A sedentary lifestyle, diabetes or smoking additionally increase the risk.
In a review printed this week in the magazine Physics of fluidsscientists created a computer simulation of one of the many carotid arteries.
They simulated three carotid arteries: one healthy, one with a “mild” 30pc blockage, and one with a “severe” 50pc blockage.
Each was then exposed to an exercise-induced coronary heart price of 140 beats per minute (beats per minute), which will be achieved by brisk walking, cycling, and zumba among various activities in overweight.
They were additionally simulated under conditions of a resting coronary heart price of 67 and a mean train price of 100 bpm.
The scientists found that the well-being of healthy and newly blocked carotid arteries improved with the train.
But for those with extremely large blockages, the results were described as “alarming”.
The manikin confirmed the rigidity in the room, increasing the chance of rupturing the stenosis and releasing some plaques into the bloodstream.
It can then travel to the mind and turn into a blockage in the organ’s blood vessel, blocking the supply of oxygen and causing a stroke.
dr. Somnath Roy, a mechanical engineer at the Indian Institute of Technology in Kharagpur outside of Kolkata and a lead creator of the study, mentioned, “Intensive train activity reveals hostile results in patients with moderate or increased stenosis.
“This will significantly increase the shear stress in the area of the stenosis, which can cause the stenosis to rupture.
“This ruptured plaque can then flow to the brain and blood supply, causing an ischemic stroke.”
The scientists added in the paper: “Although vigorous exercise may be beneficial for improving cardiac function in healthy individuals, it may be extremely detrimental to the increased heart rate induced by vigorous exercise in patients with extensive arterial occlusions.”
The image above shows the carotid arteries under three completely different beats per minute for gut and healthy people, and with 30 and 50 pc occlusion. This was done on the premise of laptop fashion
Previous studies along with one analysis from 2010, stroke patients have found that the risk of stroke increases at least twofold after exercise.
a meta-analysis of 13,000 strokes in 2021 in Europe further confirmed that acute anger, emotional distress, and vigorous physical exertion are associated with subsequent stroke risk.
The authors famously noted that each increased the cost of the coronary heart, increasing the chance that the plaque would detach and cause a stroke.
dr. Andrew Smith, an epidemiologist at the National University of Ireland, Galway and leader of this test, told TODAY: “We believe that these reciprocal events can improve coronary heart function, increase blood pressure and cause hormonal adjustments that have an effect on the blood circulating in the arteries. change. for example, due to the mind, which can increase the chance of stroke.
It is mentioned that not every episode of anger or emotional distress or strong physical exertion leads to a stroke.
“Also, not every person with a high burden of cardiovascular risk factors will have a stroke.”
Limitations of the latest study included that it was a dummy and did not accurately represent how situations would play out in real life.
Consultants warned that the dummy could also over-predict the speed at which blood moves with an elevated coronary heart price, affecting results.