In the spread of the concept of health, the notion that “the more people move, the more they are immune, the less they are infected” is so prevalent that many people fall into the wrong zone and believe that if they move hard, they can have a non-intrusive body. However, the facts are not simple.
Moderate movement does have many positive effects on the immune system. Regular aerobic motion, such as jogging, swimming, cycling, etc., can facilitate blood circulation, enable immunosuppressive cells to move more quickly across the body and detect and remove pathogens in a timely manner. For example, studies have found an increase in the activity of white cells in the blood of people who are often moderately moving, especially of meso-particle and lymphocytes. These immunosuppressors are able to consume bacteria and viruses more efficiently and reduce the risk of infection. At the same time, sport promotes metabolism in the body, helps to maintain the proper functioning of the body ‘ s organs and provides a good internal environment for the stable functioning of the immune system.
However, there is no linear infinity between sport and immunity. When the movement exceeds a certain intensity and duration, it may cause damage to immunity, a phenomenon known as “movemental immunosuppression”. High-intensity, long-term and intense sports, such as marathon competitions, long-term high-intensity exercise, etc., can put the body in a state of stress. In this state, the body is excreted with large amounts of stress hormones, such as cortisol. Cortical alcohol is resistant to inflammation, but over-scrutinization inhibits the activity of immunosuppressive cells, including megacormic cells, T lymphocytes, etc. The ability of giant predators to swallow and the growth and fragmentation of T lymphocytes are hampered, which temporarily reduces the immune defences of the body.
From an immunological point of view, after intense exercise, the levels of immunoglobins in the body change. For example, immunoglobin A (IgA) is an important component of respiratory and digestive mucous immunisation, which prevents pathogens from adsorbing to the mucous surface. Studies have shown that after high-intensity motion, the IgA level in saliva and nasal cavity can decline significantly in a short period of time, as if there was a hole in the first line of defence of the body, making pathogens more vulnerable to human intrusion and increasing the chances of infection. Especially during the post-mobilization period, commonly referred to as “window openings”, at a time when the body has relatively low immunity and is more vulnerable to infection with viruses, bacteria, etc. For example, some marathon athletes are significantly more likely to have respiratory infections than usual in the week following the competition.
In addition, the degree of tolerance of motor strength and quantity varies among individuals. Factors such as age, gender, basic health status, and sports habits influence the impact of sports on immunity. Young people may be relatively more susceptible to high-intensity sports, but are also at risk of immunosuppression if they are over-tired and do not care about rest recovery. Overmobilization can have a greater impact on the immune system and even cause other health problems for the elderly, vulnerable or chronically ill.
The balance between sport and immunity is complex. Moderate sports can help to increase immunity and reduce the risk of infection, but excessive sports can weaken the immune function and increase the likelihood of infection. We should develop a reasonable sports programme based on our own physical condition, age, basis of movement, etc., and avoid the blind pursuit of high-intensity, long-term sports. At the same time, attention is paid to post-mobilization rehabilitation and rest, ensuring adequate sleep and a reasonable diet, so that sport can truly become an effective means of raising health levels and increasing immunity, rather than being caught in the wrongs of more and better exercise, undermining its own immune defence system.
