Khankeldiev Sh. Kh. Regional features of the physical status of youth students fergana 2022 Reviewer

1.6 ADAPTATION TO LIVING AND PHYSICAL WORK
AT HIGH AMBIENT TEMPERATURE
If a person has to live or systematically perform physical activity in conditions when the external air temperature exceeds the body temperature, an acclimatized person can perform quite strenuous physical work, despite the unfavorable external conditions in which he is located. The degree and speed of acclimatization depend more on the intensity of the heat load than on its frequency and duration. If the external conditions change, then reverse re-climatization occurs.
With prolonged acclimatization, behavioral reactions can play a role. The subjects are trained to stay away from heat sources and sunlight / prefer to walk in the shade, avoid walking on an asphalt road, etc.
Cardiovascular system training and acclimatization to heat have some common features. Athletes who are in a state of good physical fitness quickly and well acclimatize to the conditions of a hot climate, while the elderly and overweight people react to such changes with much greater difficulty. It can be assumed that training the cardiovascular system with the help of physical exercises partially prepares a person to endure high temperatures, while detraining the cardiovascular system leads to the opposite effect.
But at the same time, this transfer of adaptation acquired during the improvement of endurance to living and physical work in conditions of high external temperatures is not completely complete. If a person must be prepared to perform strenuous physical work in conditions of high external temperatures, maximum acclimatization is achieved only if a combination of thermal and physical loads is used in the preparation.
The essential difference between acclimatization to thermal stress and acclimatization to strenuous physical work is that in the first case it is necessary to provide a large skin blood flow, and in the second case - a large blood flow through the working muscles.
Acclimatization is achieved according to an exponential law: first quickly, and then somewhat slower. Most of the adaptations take place relatively quickly, within the first three to four days of living in conditions of high air temperature, and most of the changes end within the first two weeks.
Although during acclimatization to physical work in conditions of high air temperatures, the use of procedures such as staying in a thermal chamber, etc., may be of some benefit, in order to achieve complete acclimatization, it is necessary to move to the place where physical activity is supposed to be performed (for example, to the place where competitions will be held), since only in this case it is possible to achieve complete acclimatization.