According to the research team led by Professor Wen Xu of Zhejiang University, they will participate in the Hangzhou marathon in 2015 and 2016 Based on the analysis of the ECG diagnostic reports of 39082 runners (half marathon and full marathon), it is found that the overall heart health level of mass runners is good, but some runners still have abnormal cardiac electrical activity.
It is not easy for cardiologists to distinguish whether this change is physiological or pathological.
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The researchers collected their baseline characteristics, including questionnaire survey, health examination results and coronary artery calcification score data.
Through the above results, it is not difficult to see that some adaptive changes have taken place in the heart structure and function of mass elite runners, that is, mass runners will also have “athlete heart” under the action of large amount of exercise.
The results showed that long-term high-intensity exercise was indeed related to the progress of coronary artery calcification.
It is very important for mass runners to keep scientific rationality and improve endurance step by step.
If runners still don’t understand the meaning of many professional terms after reading the above contents, we can explain it in popular words: under the action of long-term exercise load, some morphological and functional changes have taken place in the heart of mass elite runners, which can be regarded as “athlete’s heart” and the performance of enhanced heart function; However, a considerable proportion of runners also have pathological changes in their hearts, even hypertrophic cardiomyopathy.
The coronary calcification score obtained by CT image analysis can be used to evaluate the progress of coronary atherosclerotic plaque calcification, which is considered as a reference basis for evaluating the risk of cardiovascular disease.
Surprisingly, the left atrial volume per unit body surface area of about half of the subjects in this study even exceeded the upper limit of the normal level of athletes.
At the end of 2016, the American Heart Association had regarded cardiopulmonary endurance as the “fifth largest” vital sign, while the traditional four vital signs in the past included respiration, body temperature, pulse and blood pressure..
This study from the Korean team found that long-term high-intensity exercise may lead to the acceleration of coronary artery calcification.
In other words, long-term high-intensity exercise is not necessarily a good thing for the heart.
Among the 34 elite runners, 50% had possible abnormal heart changes, and one of them had hypertrophic cardiomyopathy, which is a high probability.
Previous studies have found that high-intensity physical activity may lead to the increase of coronary artery calcification score, thus increasing the risk of cardiovascular disease.
Therefore, as early as 2007, The American Sports Medicine Association put forward a famous viewpoint – exercise is medicine (exercise is the good doctor), that is to say, exercise can treat some common chronic diseases, such as heart failure, coronary heart disease, obesity, diabetes, hypertension, some types of cancer and depression, as well as traditional medical treatment methods.
Excessive exercise, running too hard and being too cruel to themselves may contain risks.
A large number of studies have also confirmed that the incidence rate of physical dysfunction in people who insist on endurance exercise is significantly lower than that in non exercise.
The coronary artery is the blood vessel that nourishes the heart itself, If the coronary artery itself has arteriosclerosis, it is called coronary heart disease (coronary atherosclerotic heart disease), and coronary heart disease is easy to cause the most common and dangerous problem – myocardial infarction.
In essence, the increase of left atrial volume reflects the abnormal morphological changes of the heart when mass runners bear a large amount of exercise load, that is, this change is not necessarily physiological or healthy, but may be pathological.
Of course, this also shows from a scientific point of view that only moderate exercise is beneficial to health, and excessive exercise may damage heart health.
Scientists used color Doppler ultrasound to detect the shape and structure of the subjects’ hearts, and selected a group of ordinary people without exercise experience as a control.
A study published in the famous British medical journal Heart warned runners who were too strict with themselves.
For some people, it will even increase the burden on the heart, resulting in an increased risk of heart disease in the future.
As for the causes, they may include hemodynamics and inflammation level, tube wall injury and repair, parathyroid hormone and diet.
Endurance sports can significantly improve the quality of life, mainly in improving human cardiovascular function and improving the overall health level.
This is one of the reasons why we often see all kinds of tragedies in sports competitions.
Although this coronary artery calcification does not necessarily lead to coronary heart disease immediately, it will continue to accumulate the risk of heart problems.
This study once again shows that excessive exercise and running too hard are not only unnecessary for mass runners, but also may increase heart risk.
The scientists also asked the six subjects to undergo cardiac magnetic resonance examination.
When cardiac color Doppler ultrasound showed that a total of 6 subjects had heart failure There were some abnormal changes in the viscera.
The researchers used a questionnaire to quantify the physical activity level of participants.
Although the above three situations can not completely judge the existence of heart disease, they also suggest that there is an abnormality in cardiac electrical activity, which itself is also one of the conditions for the diagnosis of heart disease.
About 300 runners made an appointment and went to the physical examination.
The results showed that compared with the control group, the atrium of runners was generally enlarged, Left ventricular wall thickening (it can be regarded as myocardial hypertrophy) and increased left ventricular weight, about 56% of the runners had increased left atrial volume; another 56% had increased right atrial volume and ventricular septal thickness, 47% had increased right ventricular outflow tract diameter, and about 50% of the runners had left atrial volume per unit surface area even higher than that of the athletes.
This is called the study on the incidence of abnormal ECG of amateur marathon runners It is pointed out that the incidence of left ventricular hypertension, T wave changes and right deviation of ECG axis in mass runners is higher than 1%.
After the examination, it was found that 6 runners had some problems and were not suitable to participate in the marathon.
Running is a typical endurance sports.
There is no doubt about the benefits of long-term endurance sports to human body.
The results showed that one of them had obvious pathological cardiac changes – hypertrophic cardiomyopathy, which is one of the causes of sudden death.
Endurance exercise is not only beneficial to health, but also can prevent and assist in the treatment of diseases and promote the rehabilitation of diseases.
And their average life expectancy is longer than those who don’t exercise.
The training amount of mature runners is significantly greater than that of ordinary runners, and they should pay more attention to heart health.
And Xiamen in 2017 (Haicang) the Organizing Committee of the International Half Marathon, in order to improve the health awareness of the public runners, cooperated with the Cardiovascular Hospital Affiliated to Xiamen University to carry out the pre competition physical examination.
After several years, they re evaluated their coronary artery calcification score.
In addition, the study also found that some runners had ventricular septal thickening, which is an important reference index for the diagnosis of hypertrophic cardiomyopathy.
Running is one of the most beneficial sports for heart health, but this is a prerequisite.
This view seems to run counter to the common sense that exercise is beneficial to the body and mind.
So how was this study done? The Korean research team selected 25485 participants aged ≥ 30 years without obvious cardiovascular disease from two medical centers in Korea from 2011 to 2017.
Many runners effectively improve heart function and reduce the incidence of cardiovascular diseases through running, but too much is better than too much.
Scientists from Poland tested a group of public elite runners The purpose of the study was to observe how many of these elite runners had changes like “athlete’s heart” by examining their heart shape and function.
This prospective clinical study found that high-intensity exercise was significantly correlated with the accelerated progress of coronary calcification.