If you want to select the most difficult marathon in China, the first marathon in Northwest Lanzhou Marathon deserves to be ranked first. Why do
say so? Let’s first look at a set of data from Lanma this year. Whether it is an elite player or a mass player, the results are slower than personal PB.
The domestic men's champion is Guan Yousheng, with a score of 2 hours, 18 minutes and 58 seconds, 2 minutes and 50 seconds slower than his personal PB; the second in China is Bao Bilige of the Inner Mongolia team, with a score of 2 hours, 22 minutes and 40 seconds, 2 minutes and 49 seconds slower than his personal PB; the third in the domestic Qinghai team, Li Yongyuan, with a score of 2 hours, 23 minutes and 01 seconds, 7 minutes and 28 seconds slower than his personal PB.
Jiao Anjing won the domestic championship, with a score of 2 hours, 58 minutes and 45 seconds, which is 20 minutes slower than her personal PB. When she was sprinting in the end, she was almost exhausted and relied on her willpower to pass the finish line.
Kong Jie won the second place in China for a score of 2 hours and 59 minutes, which was 14 minutes slower than her personal PB.
marathon assistant editor Dazi, the best score in the whole horse is 2 hours and 35 minutes. This year, he ran 2 hours and 39 minutes, which was 4 minutes slower than his personal PB, but it greatly improved the personal Lanma score last year.
The specially invited Kenyan player Kimtai won the championship with 2 hours, 11 minutes and 47 seconds, 2 minutes and 18 seconds slower than his personal PB.
Ethiopia's Edesa won the women's championship with a time of 2 hours, 30 minutes and 22 seconds. Although she broke the tournament record, she was 9 minutes and 17 seconds slower than her personal PB.
Because the championship score was too slow, it was also a professional American running website let'srun, and it also placed it in a very conspicuous position on the homepage.
The co-founder of this website posted on the forum that , as a gold bid event, is too slow for . (Note: The gold bidding event has requirements for the results of the special players, within 210 for men and within 228 for women)
Of course, a reasonable runner replied: 26 degrees Celsius, which explains why the results are not outstanding.
Some netizens pointed out directly: the temperature in is as high as 80 degrees Fahrenheit, why is this not mentioned?
In fact, the co-founder of this website is not simply complaining about Lanma's achievements, but taking this opportunity to complain about the IAAF's new World Championships and Olympic marathon selection criteria.
What he wants to express is that the results of a gold medal event can be so slow, so is it reasonable to simply use the results threshold to set the qualifications for the Olympics and World Championships?
As for whether the new World Championships or Olympic selection standards are reasonable, we will not discuss further.
What we want to say is why it is so difficult to achieve good results in running a marathon in Lanzhou?
There are two reasons:
First, sub-plateau effect
Why do you go to the plateau to run a marathon and your grades will decline?
First of all, the air pressure affects the supply of oxygen in the human body. When the natural air pressure drops, the oxygen partial pressure in the atmosphere, the oxygen partial pressure in the alveolar alveolar and the saturation of the arterial blood oxygen will all decrease accordingly. If the blood oxygen is too low, athletes are prone to fatigue.
is followed by a decrease in maximum aerobic capacity or maximum oxygen intake. Maximum oxygen intake represents the maximum amount of oxygen consumed by the muscle per minute, which is often used as an indicator of aerobic capacity.
In plateau areas, the oxygen available to muscles is reduced, and the maximum oxygen absorption is lower than the value in sea level areas, so the impact of plateaus on endurance exercise is particularly obvious. Not only that, for individuals with excellent physical fitness, the maximum oxygen absorption drops even more because the oxygen saturation in their hemoglobin decreases significantly. In other words, the higher the hemoglobin an athlete, the more oxygen is lost.
In the live broadcast of Lanma yesterday, some experts said that according to research, for every 100 meters of altitude rise, the score of 10,000 meters will drop by 6 seconds, while the altitude of Lanzhou is about 1,500 meters. Therefore, the results of the whole marathon will drop by at least 6 minutes when running a marathon in Lanzhou, so it is not so easy to run a good score here.
If you only have a score of less than 6 minutes slower than PB in Lanma this year, it is actually considered a PB.
This year, Lanma Organizing Committee has also set up a PB wall. If you refresh your personal best results in Lanma, then your name will be engraved on the PB wall. I don’t know how many people can get on the wall this year, so it should be very few.
Second, the temperature is high, exposure to sun
The high temperature has a really great impact on marathon performance.
The temperature in the 2016 Rio Olympics was as high as 30 degrees Celsius. Even Kipchoger only ran the slowest score in his career with only 2 hours and 08 minutes.
2017 National Games, the temperature was as high as 30 degrees Celsius, and Dong Guojian won the championship with only 2 hours and 18 minutes.
The ideal marathon temperature is 8-15 degrees Celsius, and athletes are most likely to create good conditions. For example, London Marathon , Berlin Marathon , Chicago Marathon , Tokyo Marathon , the temperature on the race day is very suitable for creating good results.
This year's Lanzhou Marathon, even at 7:30, the temperature is much higher than this ideal temperature. When it is near noon, the temperature is close to 30 degrees Celsius.
We know that in hot environments, athletes sweat a lot, thus losing a lot of water and minerals such as potassium, sodium, calcium, magnesium and other minerals. If they are not replenished in time, dehydration may occur. When the weather is hot, people are prone to fatigue and consume more physical strength.
In addition, the sun-exposed weather in Lanzhou also has a great impact on runners, especially in the second half. Sunlight also increases athletes' body temperature, and more importantly, solar infrared radiation reduces athletes' heat dissipation ability. Therefore, cloudy days are the most conducive to creating good results.
Sub-plateau, high temperatures and sun exposure, the factors that have the greatest impact on marathon performance have all caught up with this year's Lanzhou Marathon. So it is no surprise if you run a Lanma this year.
