Domestic tourism and mountaineering activities are becoming more and more prosperous as the national income level increases. With the improvement of transportation, now, in addition to the aircraft routes that have been developed for a long time, there are even more direct trains that provide cheaper and more convenient access to Tibet. Most people do not necessarily need to climb. It is very likely that it will enter the areas where Gaochun is being pulled, such as Lhasa in Tibet, Huanglong in Sichuan, Siguniangshan and other places. For personal safety issues, it is necessary to understand the impact of high altitude on the body.

The purpose of this article is to use simple physiological formulas that are commonly used in forms of questioning, to match the mountain geography in the country, so that Shanyou and ALICE are easy to understand, and they can always pay attention to their own bodies in the mountains. The data in this paper comes from several chapters of the research report. In order to maintain the style of the article mentioned above, there is no source for data. Shanyou is interested in knowing that as long as the letter comes from, it will provide detailed sources.

1. What is high altitude?

Generally living in the area along the winding or plains, activities around more than 10-1500 meters in the horizontal line. For these people, more than 3,000 meters is a high pick zone. The compatriots who lived in Tibet and in the mountains of Sichuan Province were born in more than 3,000 meters. The 3000-plus meters had no effect on them. However, their life is also less than 4,000 meters, and there are more than 5,000 in the middle but the stay is not long.

The number of foreigners is 2500-3500 meters is a high pick zone, 3500-5500 meters is a very high area, 5500 meters above is a very high area, because very few people can live a long period of 5500 meters. And there are not many mountains above 5,000 meters in foreign countries, and 8100 meters or more are generally considered dead zones.

For domestic Shanyou, the domestic mountain is high in mountains and does not need to be divided too complex, and the impact of high altitude on the body varies from person to person. Some people begin to have high altitude reactions at 2,500 meters, but most of them begin at 3,000 meters. The topography of the country's peaks can be divided into 3000-6500 meters for the high picking area, 6500-8100 meters for the high area, and entering 8100 meters is the death zone.

2. What is the difference between high altitude and peace?

Everyone knows that the higher the altitude, the lower the atmospheric pressure and the thinner the air. The less oxygen that can be absorbed into the blood. Look at some data:

High Atmosphere Pressure mm Mercury to sea level Proportion of oxygen in the air to sea level Level 760
2800 meters 543 72% 72%
6100 meters 356 47% 47%
8844 meters 228 30% 30%

From the above table, we can see that at 2,800 meters we take a breath and the oxygen is 28% less than at sea level. Therefore, at the peaks of Yuzhu, Qifeng and Que'ershan, the oxygen content in each breath is less than half of that in the water level. At the summit of the Mt. Everest, atmospheric pressure and atmospheric oxygen content are only one third of sea level.

Of course, as the altitude increases and the temperature decreases, the wind speed increases, but this will be another topic of discussion.

3. How does the human body adapt to stilts?

The reduction of oxygen in the air in the relatively high-pull area of ​​a person's body will react as follows:

1) Accelerate and deepen breathing to inhale more air and oxygen;
2) Increased pressure in the pulmonary arteries, which forces the blood into the lungs, which are not normally used when talking on the water level;
3) The kidneys secrete more hormones, affecting the increase in the number of red blood cells.

The increase in the number of red blood cells that the human body adapts to high pulls increases. The increase in red blood cells means that the blood can carry more oxygen to the brain, and the vital organs of the body as well as the meat in the exercise, compensating part of the high altitude air A shortage of oxygen molecules. This process is called alpine or highly adaptable. Normally I or you in the coastal or plain area when you reach a height of 3,000 meters need a day or two or maybe 4-5 days of high altitude adaptation period. As we climbed all the way, the body slowly adapted to it. So it's best not to climb too fast. Do not rise more than 500-600 meters per day.

The compatriots living in high altitude areas in Tibet and Sichuan have adapted to a height of 3,000 meters. But this does not mean that they do not have to adapt to higher altitudes. Only their adaptation period is shorter than ours is better than ours.

As for the height of 8,100 meters, which is commonly known as the death zone, the general human body cannot adapt and oxygen must be used to protect life. However, there are a few individual climbers who have the adaptability of extraordinary people and can climb the mountains above 8000 meters without oxygen.

When climbing, it is important to know that the most important thing to adapt to is the amount of blood oxygen saturation. There is a pulse of blood saturated oxygen content in the market, as long as the fingertips can measure blood saturation oxygen content and pulse Bo (not here to buy advertising). If the blood saturation oxygen content is too low, it is necessary to immediately sprinkle or oxygen until the blood saturation oxygen content increases.

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