High temperature
The ideal temperature for horse racing is between 5-15 degrees Celsius. If the temperature is above this during horse racing, necessary preventive measures are the key to reducing risks, but the most important thing is to respect the competition temperature.
Racing
High temperature marathon kicked off
(Picture source: Boston Marathon official social media)
2017 Boston Marathon ended on the second day, news of the competition was published in the " Boston Globe ". The medical person in charge said that because the high temperature in Boston reached 27 degrees Celsius that day, the number of people receiving medical assistance in this year's Boston increased by 6-8% compared with the past, reaching 2,596. Among them, 22 people at the end of the line showed extremely urgent symptoms of heat, and 15 people along the track. On the day of the
competition, the racing wheelchair players set off for the first wave, with a temperature of 18.3 degrees and a humidity of 65.1%. When the Volkswagen players started at 10:00, the temperature was already above 20 degrees Celsius. The average temperature at the Boston Marathon starts over the years is 7-10 degrees Celsius, and the average temperature at the end is 21-24 degrees Celsius.
Two weeks later, the 13th National Games marathon was held in Tianjin. What impressed everyone should be the scene where the Sichuan Gangmei kept falling down and getting up in the last 700 meters of the finish line, and finally climbed over the finish line. On this day, the temperature in Tianjin was 17-33 degrees Celsius, while the temperature at the start of the Volkswagen players reached more than 23 degrees.
suitable temperature for competition: 5-15 degrees Celsius
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210 The IAAF released in 2014, suggesting that the ideal temperature for fast running is about 5-15 degrees Celsius.
New York Road Running Association said in the Orange Light Marathon Management Training Course that the wet ball black ball temperature WBGT index is commonly used in the United States now (used to evaluate the heat intensity of the human body during the entire working cycle, mainly used for high-temperature operation classification). This indicator combines the four influences of temperature, humidity, thermal radiation and wind. In road running events, it is used to continuously monitor the thermal intensity of the track environment. Therefore, it is not enough to focus on just one indicator of temperature.
2017 The temperature of Xiamen Horse on that day was 16-25 degrees Celsius, which seems to be a good temperature difference. However, the sunshine time of Xiamen is very long. When the running starts at 8:00 in the morning, the temperature is already 25 degrees Celsius, and the thermal radiation is very strong. Some runners say that this is a "scam". Sitting in LeTV Studio on April 18, I was commenting on Boma. Looking at the players' shoulders illuminated when they set off, I knew it would be a tough game.
The summer heat threshold in the event is much lower than life experience
As the competition progresses, the temperature in the contestant's body increases. If the outside temperature is too high, the heat in the body will not be easily dissipated directly. The temperature in the body continues to rise, the body's temperature regulation ability is decreasing, and the exercise ability is decreasing; water loss takes away a large amount of electrolytes, and when the body's temperature regulation ability is seriously damaged, you may have mental disorders, movement disorders, unclear consciousness, and even collapse, renal dysfunction, and even more serious consequences.
The temperature is above 25 degrees Celsius, and the pace of professional players may drop by about 20 seconds per kilometer. The temperature regulation center will have protective inhibition when the temperature is high, which will require the players to slow down. However, in order to win PB, for the top 100 or even 500 prizes set for the event, many players will not choose to slow down. On May 7, there are still friends who want to clean PB.
According to the research of the first reaction, the heat threshold in the event is much lower than life experience. When the temperature is greater than 22 degrees Celsius and the humidity is greater than 80%, the comprehensive probability of heat exhaustion and heat stroke disease in marathon events is about 2.2‰, and the time and space of occurrence are highly concentrated.
That is to say, most people think that the comfortable 20 degrees Celsius can be a potentially risky temperature for horse runners.
How should the Organizing Committee deal with high temperature
In China, the Organizing Committee especially needs to formulate high temperature warning measures because we have a relatively large number of high temperature horses.
First of all, in terms of temperature forecast, it is recommended that the organizing committee ask the Meteorological Bureau to issue the most detailed special report.
2016 North Horse 's race day meteorological report, the humidity at the departure is 90%, the humidity at 10 kilometers, 20 kilometers and 30 kilometers is 85%, 70%, and 60% in a certain period of time, and the end point is 40%. Using this data, the runner will be informed that the first half of the year will consume a lot and try to retain physical strength until the second half. As the official leader of North Horse, I use this strategy to lead the way. Poma's statistics on temperature historical data are also divided into stages.
for reference
Secondly, when choosing a track, the shade of trees, sunshine time, and sunshine direction should be considered.
Again, use a variety of cooling measures as much as possible.
For example, the density of the water station is increased; the calculation of water volume should take into account the consumption of the players using drinking water toppings to cool down; spray encryption must first be effective. Judging the placement of the spray according to the wind direction, it is really not possible. Modifying the fire truck is a good way; the supply station increases supply for preventing heat and cooling, such as watermelons.
Indeed, some people say that there are many high-temperature horses abroad, but the departure time of the Standard Chartered Marathon in Singapore is 4:30 in the morning, and the whole sports drink is cold; the Pattaya Marathon is soaked in ice; the Taiwan Tianzhong Marathon has a temperature of 30 degrees Celsius that day, and the 12,000 people have consumed a total of 5,000 kilograms of watermelon. At the same time, smoothies and mung bean soup can be eaten at the supply station and ice cubes. More importantly, the competition has not set a bonus.
(Picture: sponge blocks immersed in ice in Pattaya Marathon)
Therefore, starting the run in advance, reducing the competitiveness of the competition is also an important measure to prevent high temperatures.
In the long run, the event requires a set of high temperature warning standards. The WBGT warning standards commonly used in the United States can clearly guide players on what kind of high temperature warning level the competition is at. On the Boston Marathon and New York Marathon, WBGT thermometers are placed. During the New York Marathon, the command center summarizes meteorological data every half hour.
In the medical station, in addition to adding Huoxiang Zhengqi Water and normal saline water, higher-level anti-heat plan is also needed. Regarding the Boma event, I have heard at least three contestants telling me about the process of cooling the ice bucket. We also saw the ice bucket in the medical tent in the New York Marathon with our own eyes.
In fact, sooner or later, we will encounter irresistible high temperatures in the competition. Should we add ice buckets or suspend the competition? These have already made precedents internationally. In May last year, when the WGBT measured based on temperature, humidity, heat radiation wind power exceeded 82, exceeding the early warning threshold of the safety guidelines, the organizing committee terminated the race at 12:30 noon, while Ottawa, Canada, shortened the race schedule by 10 kilometers. In 2012, the temperature of Poma was as high as 27 degrees Celsius when the female players set off. This year, for players who have received the competition equipment, the organizing committee allowed the quota to be postponed to the next year.
Respect the high temperature horse
Of course, all preventive measures are not as good as more respect for the temperature of the competition.
We all know that Tokyo Marathon has maintained a zero mortality rate for 11 years, and East Malaysia is the only Grand Slam I have ever run at the moment without sponges, sprays and no cooling measures. Before leaving the Tokyo Marathon, I was wearing a thin down jacket. According to the temperature statistics of the Tokyo Marathon, which has been held for 11 years, the average temperature at the start of 9:10 was 6.5 degrees Celsius, and the leading players finished the race at 11:15-11:20. The average temperature at this time was 10.5 degrees Celsius, while the average temperature at the end of 16:00 was 10.4 degrees Celsius.
Jelly Technology counted the distribution time of 328 events registered with the China Athletics Association in 2016. Among them, there were 160 events from April to September, accounting for about 50%. In the past six months, the probability of temperatures between 5 and 15 degrees should be extremely low.
Check the 2016 calendar of the Japan Road Athletic Association. There are 34 road-running events in total, of which only 5 games were from April to September, accounting for less than 15%. In February alone, there were 8 road-run events, including the famous Tokyo Marathon and Kyoto Marathon. This season, Japan is not full of spring and the scenery is not very beautiful.
article comes from "Runners World"
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