Avoid heat stroke in summer exercise
Heat stroke refers to an acute disease with a disturbance in body temperature regulation when working in a hot sun or high temperature environment. Mild heat stroke, patients often have feelings of dizziness, headache, palpitations, nausea, etc .; severe cases often stop sweat secretion, and the body temperature rises sharply., Coma and other symptoms, if not rescued in time, often life-threatening.
The human body is constant temperature. Although the temperature of the external environment varies greatly, the human body temperature is always stable at 36.
5 a 37.
Between 5 ° C, it means that the fluctuation of human body temperature does not exceed 1 ° C.
It is because the human body maintains a balanced body temperature by changing the process of heat production and heat dissipation under the regulation of the body temperature adjustment center.
People exercise under the condition that the hypertension is lower than the skin temperature (about 33 ° C). Although a large amount of thermal energy is constantly generated in the body, the skin blood vessels are expanded under the regulation of the body temperature regulation center, and the inside of the body can be quicklyGet close to the body surface, and then radiate the rest of the transformation through different methods such as radiation, convection and substitution.
At the same time, the body temperature regulation center also accelerates the sweat glands to work, secretes a large amount of sweat, and then evaporates the sweat to quickly dissipate body heat, thereby maintaining a relatively stable body temperature.
If you exercise in summer, if the temperature exceeds 34 ℃, coupled with high humidity, the heat dissipation process such as sweltering weather, radiation, convection, injection and evaporation will be difficult, so a large amount of accumulation in the body, the body temperature will rise sharply, and eventually lead to heat stroke.
In the summer, military exercises must prevent heatstroke and solar radiation.
So how to prevent it?
First of all, arrange exercise time: Except for swimming, it is best not to arrange exercise time in the summer between 11-16 o’clock in the summer, because this can change the high temperature, and the sun is hot, and the infrared radiation is the strongest.
Summer exercise also needs to choose the venue and environment: summer exercise should choose to park, lake or other tree-lined places.
During exercise, drinking water as needed is of great significance in preventing heat stroke.