Whether the number of heartbeats per minute is related to the length of life has always been a concern of people and a major topic of concern to scientists. So, is there a relationship between heart rate and life span?
Animals: The slower the heart rate, the longer the life span.
Scientists have long discovered that the heart rate of small mammals such as mice and rabbits is very fast, reaching hundreds of beats per minute, but their life span is only 1 ~ 3 years. On the contrary, large mammals, such as whales, are very heavy and have a slow heart rate, only about 20 beats per minute, but their life span can reach 30 to 40 years. Scientists further confirmed that this rule can be found in all mammals. Interestingly, the heart rate of hamster is about 500-600 beats per minute, which is 20-30 times that of whale, but its weight is only half that of whale.
It has been found that a turtle named Gra Baggos can live to be 177 years old, and its heartbeat is only 6 times per minute, and its heart beats about 560 million times in its life. Surprisingly, all mammals (except humans) have basically the same number of heartbeats in their lifetime, about 730 million.
Although the size of each animal is different, the ratio of heart weight to body weight is roughly the same, which is 0.5% ~ 0.6% of body weight. At present, the exact reasons for these phenomena have not been fully clarified, but people have put forward an explanation: heart rate is determined by the body's energy metabolism demand, obeys the laws of biophysics, and life will end when the body's energy is exhausted. Heart rate is an effective index to reflect the body's energy metabolism.
Human: Heart rate is an effective index to predict male life span.
Humans and mammals are very different. Under the condition of similar heart rate, people's life expectancy is much longer than that of animals. The main reasons are scientific development, medical care and social progress.
Professor Wu Jie, a Chinese scholar, observed the resting heart rate of 5360 healthy adults, ranging from 5/kloc-0 to 94 beats/min, with an average of 67 beats/min. The number of human heart beats is obviously influenced by the autonomic nervous system and body fluids. For example, when people are excited, their heart rate will increase, and when they are completely quiet, their heart rate will slow down. Scientific research shows that the resting heart rate of adults is 70 beats/min, and the life span can reach 80 years (it should be noted that the interference of various diseases should be excluded).
The total number of heart beats in a person's life is about 2.5 billion to 3 billion. If the resting heart rate is around 60, his life can reach 93 years old. Therefore, the life span with a slow resting heart rate will be prolonged, whereas the life span with a resting heart rate greater than 80 times will be shortened. A large number of clinical studies have also confirmed that people with fast resting heart rate have a significantly increased risk of cardiovascular diseases and a high mortality rate. Someone has specially studied the relationship between heart rate and life expectancy of the elderly. They selected healthy elderly people without cardiovascular risk factors, aged 65-70 years, including male 1.407 and female 1.654, who were followed up for a long time. The results show that among men, the heart rate is more than 80 beats/min and more than 60 beats/min, and the rate of living to the age of 85 has dropped by nearly half. Heart rate is an effective index to predict male life expectancy, but there is no significant difference among elderly women.
Slow down your heart rate and give you a chance to live longer.
Is there any way to keep the resting heart rate at about 60 times, so as to have a chance to win a long life?
The first is to rely on exercise. Regular participation in various exercises of appropriate intensity will slow down the resting heart rate (the heart rate will be accelerated during exercise, but the heart function will be exercised by exercise, thus slowing down the resting heart rate). A resting heart rate of 50-65 beats (the number of heartbeats during sleep can be 38-50 beats/min) is a sign of heart health and longevity.
The second is to maintain an appropriate weight. Obesity will increase the burden on the heart and speed up the heart rate. Therefore, obese people should maintain proper weight through physical exercise and diet adjustment.
In addition, both smoking and drinking will accelerate the resting heart rate, so it is necessary to quit smoking and limit alcohol.
It is inappropriate for many elderly people to be afraid when their heart rate is slow (except for pathological changes).
Studies have confirmed that rapid resting heart rate will accelerate the progress of cardiovascular diseases several times, so measures should be taken to control excessive heart rate. Doctors often give beta blockers (such as betaloc and Kangke). ) for patients with hypertension and coronary heart disease, one of its purposes is to slow down the heart rate, protect the heart, reduce and control myocardial ischemic events, improve heart function and prolong life. Large-scale clinical data prove that if β blockers are used correctly, the mortality rate can be reduced by 30% ~ 44%. At present, the β -receptor blocker (evodiamine) specially developed to reduce sinus tachycardia has the effects of improving heart function, controlling myocardial ischemia and hypertension, and has no other side effects. I believe that in the near future, it will be used for patients and will effectively prolong people's life.