What's the difference between African luck and Nepalese luck?

Africans are stubborn. They have a strong sense of responsibility and take things with them. You can walk easily in the Himalayas with a load nearly twice your body-if you have seen Nepalese walking with a load, you will think that they are all Hercules, because they often walk easily in the rugged and steep Himalayas with a load of more than 65,438+000 pounds (45 kilograms). How can they have such power? According to National Geographic, scientists have recently solved some of the mystery. Although technology is developing day by day, it is still inevitable that people all over the world will bring things. Even when traveling, you need to carry a bag with necessary food and medicine. The researchers found that westerners like to carry things in bags, while African women like to carry things on their heads. But these two methods are not as energy-saving as Nepal's back method. Nepalese people are very good at carrying loads, sometimes they can walk hundreds of kilometers at a time. Many times, the weight of what they carry exceeds their own weight, even nearly twice that of their bodies! Nepal is a mysterious country and a mountain country, so it is common for local people to walk in the mountains. Due to the underdeveloped traffic, local people move things from A to B, rarely using cars, but mostly using backrests. Nepalese men's back skills are amazing. They carry more than 65,438+000 pounds, and still walk freely on the rugged and steep Himalayas. If you ask them what the secret is, they will say that the mountain god gave them divine power. Of course, even Nepalese people don't believe these jokes, but scientists are interested in this strange phenomenon. According to the latest research, Nepalis can all be called Hercules carrying heavy objects, because they consume less physical strength than others when doing the same job. Norman HerGrudd, a physiologist at Catholic University of Leuven, led the study, which was partly funded by the Research and Exploration Committee of the National Geographic Society. The results of this study are published in the latest issue of Science. Nepal's load-bearing capacity is full of legends, and even the name "S h e r p a" of a nation in Nepal is synonymous with "porter". Nepalese people can carry nearly twice as much body. Grudd's research team found that at work, Nepalese people consume significantly less physical strength when carrying a pound of heavy objects than other porters. This unusual load-bearing capacity helps Nepalese porters to travel long distances between markets all over the country, carry goods and sell them to make a living. For example, the weekly market held in Nancha Town has become a distribution center for businessmen from all over the Himalayas to promote their goods, which provides a lot of opportunities for the survival and development of Nepalese porters. Grudd said: "You often see a couple carrying goods to the market to sell." Porters first hoard goods in Kathmandu valley, and then get up early and get greedy. It takes more than a week to transport these goods to a market in Nancha Town at an altitude of 3,500 meters. Namcha is not far from Mount Qomolangma in lizhu. The mountain road from Kathmandu Valley to Nancha100km, including 8000m uphill and 6300m downhill. Hundreds of porters go this way every week. The researchers made statistics on the day before the market opened, and found that 545 men, 97 women and 32 yaks went to Namcha's market from this road. Many of them go out early and go to bed late. The youngest porter is only 1 1 years old, and the oldest is 68 years old. The weight of the things they carry surprises westerners. The average load of male and female porters is equivalent to 93% and 66% of their body weight respectively. One fifth of a man's load is 125% of his own weight, and the weight of a back is actually 183% of his own weight! After the porters sold their goods in Nancha town, they hurried home and shipped some more goods to sell. In the field investigation, Mr. Grude and his research team selected all experienced porters, and it usually takes 7 to 9 days to complete this section. The researchers asked the porters to stop and weigh the items on their backs. They calculated that more than 500 men and nearly 65,438+000 women delivered 30 tons of goods to the market in Namcha town. Spencer, a member of the research team, said: "They generally don't have any advanced equipment and the shoes they wear are very shabby." However, the porter's tool is simple but effective: first, put the goods in a big basket with the basket behind. Locals call this kind of basket "multi-branch". The belt passes under the basket, and then passes through the crown on the top of the head, which also bears most of the weight. Each porter also carries a T-shaped crutch called "t o k m a". In the process of handling, porters sometimes stop for a while before moving on. He Grudd said: "When encountering a steep slope, they stopped and walked 15 seconds and rested for 45 seconds." Every time they rest, they will support the load with T-shaped crutches, which can make them stand and rest. Roger Cram, an expert in human and animal sports at the University of Colorado in the United States, said that Nepalese people have the most unusual load-bearing capacity. "This is an interesting scientific riddle, that is, how do they preserve their physical strength during walking?" Find some "clues" The researchers tested the load-bearing capacity of Nepalese people in many ways. The people who were tested mainly came from Sherpa, Rai and Tamang. First, they selected eight people to carry six or seven kinds of goods with different weights at five different speeds on the road with a length of 5 1 meter. At the same time, put on advanced masks for them and measure their oxygen consumption and exhaled carbon dioxide. Then, the research team compared the results with the situation of Kikuyu and Luo women in Kenya, Africa. Women in these two tribes are famous for holding their heads up. The test found that when Nepalese porters carry 20% of their own weight, their metabolism is basically the same as when they carry nothing. After further increasing the load, it is found that their load-bearing efficiency is much higher than that of ordinary women. However, the researchers did not completely find the answer, but they found some "clues". For example, they have steady gait and slow walking speed, and often stop to have a rest, especially when climbing steep slopes, and even stop to have a rest for 45 seconds every 15 second! Nepalese bear 60% of their own weight, but the metabolic value of their bodies is far less than that of American soldiers with the same weight. The researchers also found that even Nepalese people are very efficient when walking normally. The researchers analyzed that maybe they reduced their muscle activity by changing their gait. Grudd said: "The energy transfer of Nepalese porters is about 65%, which is the same as that of you and me. But their backs are not as overwhelming as ours. " From this perspective, the efficiency of Nepalese people in carrying things is the highest in the world, mainly because of the organic combination of weight-bearing technology and physical ability. First, physical factors: Nepalese are generally not tall, but they are very strong. They live at high altitude and have high levels of red blood cells in their blood. The second is their weight-bearing skills; Third, pay great attention to rest when walking with load.