What are the requirements for marathon runners (2)

Regarding vital capacity, the amount of air that the human body enters and exits the lungs at rest is about 400ml (one breath volume). On this basis, if you inhale hard and hard, you can also inhale about 1700ml (preparatory inhalation volume). After exhaling, a further 1600ml (preparatory exhalation volume) can be exhaled. Vital capacity is the sum of these items,

Vital capacity = one breath volume + prepared inspiratory volume + prepared expiratory volume.

Although vital capacity cannot directly indicate respiratory function, it is beneficial for athletes to have a large vital capacity. The vital capacity of an average adult man is 3000-4000ml, and that of an adult woman is 2000-3000ml. Among track and field athletes, throwers have particularly large lung capacities, some exceeding 6000ml.

(5) Strong intestines and stomach and liver

Marathon training and competition consume a lot of energy. In order to replenish energy, you need to have good food digestion function and strong The stomach is very beneficial. in the nutrients people absorb.

Glycose (carbohydrate) is decomposed from glucose into glycogen and stored in the liver and muscles in various parts of the body. During exercise, energy in the muscles is first consumed, and then stored in glycogen in the liver. Supplementation will be given through the blood.

For marathon runners, it is extremely important to have strong energy storage and replenishment capabilities. The quality of the gastrointestinal tract may be mostly due to innate factors, but the ability to store and replenish energy can be improved through training.

Heart Risk

A research report released in 1996 showed that the chance of fatal myocardial infarction during a marathon runner's career is approximately 1/50,000; This is considered a very small probability by researchers.

Based on this result, the report also stated that heart examinations are not necessary to participate in marathons.

However, the study did not assess the marathon's overall impact on heart health.

In a 2006 study of 60 amateur marathon participants, some levels of troponin (which can detect heart damage or disorders of the cardiac system) were tested in their bodies after the marathon. They were given ultrasound scans before and after the game.

The results show: Among the test samples of 60 people, those who ran less than 35 miles (approximately 56 kilometers) per week before the competition are likely to have heart damage or cardiac system disorders; however, those who run every week More than 45 miles (about 72 kilometers), with little or no detection of heart problems.

What needs to be emphasized is: Regular running is very beneficial to health, including reducing the risk of myocardial infarction by 50%. Additionally, these studies only looked at marathons and not other forms of running.

And the marathon is considered a test of endurance, which puts more stress on the heart than other shorter running activities, so this may be an explanation for those study results.

Another study investigated individuals who had myocardial infarction during exercise and pointed out that people who lacked exercise for a long time were 50 times more likely to have myocardial infarction during exercise than people who exercised regularly.

In 2007, 28-year-old marathon runner Ryan Shay suddenly fainted during the earlier U.S. Olympic trials and died after resuscitation failed. His death was reported as possibly due to a congenital heart anomaly, or structural defect in the heart.

Mental strength

No matter what kind of sports, if you want to be an excellent player, the most important thing is to have the ability to withstand all kinds of mental and physical pain. Be patient and able to control your own self-control, and often show a fresh enthusiasm for competition, maintaining the mood of constantly working towards your ultimate goal.

However, there are very few people who are born with such a noble spirit. It must be through the athlete's own experience, or under the influence of teachers, coaches, seniors, movies and books, so that the athlete can develop spiritually. Gradually grow up and form the character you should have as an athlete.

In addition, through daily step-by-step training, regular daily life and game experience, you are further mentally tortured, thereby developing a confident and humble mental state.

Some people say: Marathon running is a lonely race, one fights against oneself. Marathon competition does not require any competitive equipment, only the athletes' own bodies. The competition conditions are equal, the referees are completely fair, and the strong one can always win.

Mental strength is not something you are born with, but is gradually cultivated through training as an acquired social trait.

Mental strength plays a very important role in the marathon. A large proportion is one of the basic conditions for becoming an excellent player.