The Beijing Center for Disease Control and prevention issued the “guidelines for outdoor activities of citizens during the epidemic period of new crown disease”, which gave some protection tips for outdoor activities

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You may prefer the open outdoors to playing at home

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Brody said in his research paper

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03 project: during the epidemic period, the public should exercise alone to avoid group sports, such as square dance, basketball, football, etc., and do not go to the open-air baths and swimming pools to avoid cross infection

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For areas with serious epidemic situation, it is suggested that we do some simple exercises at home

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Hands must be washed or disinfected after touching public goods.

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This kind of gaseous cloud will carry droplets of different sizes, thus spreading disease

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Don’t touch your mouth, eyes and nose when you go to sports places by public transportation

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When the large droplets settled rapidly, the small droplets (also known as aerosols) would evaporate and form residual particles composed of the dry matter of the original droplets

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In order to determine the specific differences in the spread of the disease between indoor and outdoor air, the researchers used computers to track the flow of the surrounding air during outdoor sports

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“In this case, the life of the droplets can be extended 1000 times, and the time they spend in the air can be increased from a fraction of a second to a few minutes,” she said Experts send you a “strategy for outdoor protection”

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Based on the data from the simulation test, the team recommended that people walking outdoors should keep a distance of at least 4 meters (13 feet); runners and cyclists should keep a distance of at least 10 meters (33 feet); fast riders should keep a distance of at least 20 meters (66 feet)

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In addition, outdoor sports also need to do the following things: 01 wear a mask, it is best to wear a mask when outdoor sports, disposable medical mask, ventilation valve mask or sports protective mask can be used to reduce the sense of suffocation

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It is suggested that the general population should take aerobic exercise as the main method, and take appropriate exercise of certain intensity, such as jogging, Tai Chi, yoga, mountaineering, cycling, etc

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Although the new epidemic has not completely disappeared, people are ready to take part in outdoor sports

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This issue tells you the “effective safe distance” of outdoor walking, running and riding, and interviews experts to summarize an “outdoor protection strategy”

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William Wells, who studied the spread of tuberculosis in the 1930s, divided the droplets into two categories: large and small

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Especially during the epidemic period, good outdoor ventilation seems not conducive to the spread of the disease

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The study, published in the Journal of the American Medical Association, points out that the current social alienation measures are based on a model developed in the 1930s to prevent the spread of disease

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Try to go out when the sky is clear and cloudless

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Don’t do high-intensity, long-time, antagonistic training, or it will easily lead to fatigue or muscle damage, reduce the body’s immunity

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On this basis, the experts give more detailed suggestions and precautions

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Dr

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The weather is changeable in this season

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In case of activities in parks, squares and other open places, it is still necessary to cooperate with the prevention and control measures of relevant departments

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It’s recommended to carry a water cup with you

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Wear clothes with appropriate thickness according to the weather

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But recently, an international joint study found that the spread of new crown disease is stronger outside the home, so we should keep a longer social distance when exercising

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Although social distance measures encourage people to either isolate their homes or keep a safe distance when they need to go out, an MIT study shows that the correct safe distance should actually be 27 feet, USA Today reported

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According to whether a respiratory infectious disease is mainly transmitted by large droplets or small droplets, infection control strategies are formulated

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01 environment: when there are few people and open air circulation, outdoor sports must avoid getting together, try not to go to public sports venues; you can choose places with less people, such as riverside, seaside, forest park and other places with air circulation; it is best to avoid walking around the community, usually there are more residents, and jogging on the street is not advisable

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In other words, when the person in front sneezes or coughs, the droplets will temporarily suspend in the air

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Pay attention to keep warm

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It is based on this droplet size classification system that the World Health Organization and the Centers for Disease Control and prevention of the United States propose a social distance of at least 6 feet (1.8 meters)

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Avoid running at night

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It’s not suitable for outdoor sports every day

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When you get home, take off your coat, wash your hands and take a bath

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The temperature changes greatly all over the country

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Due to the large temperature difference between morning and night, it is better to avoid going out too early, especially for the elderly with chronic diseases such as cardiovascular and cerebrovascular diseases, they can go out for half an hour to one hour after 90 am and before sunset at 4 or 5 pm; the temperature at night is lower, and the air quality is worse than that in the daytime, so they should avoid running at night after 8 or 9 pm

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Although it’s inconvenient to wear a mask, it’s also necessary to replenish water properly during exercise

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In the case of open space and air circulation, and no one else around, you can not wear a mask to breathe fresh air, but when someone passes by nearby, you must wear it in advance

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Experts interviewed in this issue: Wang Jun, associate professor of the Department of sports physiology of Beijing Sport University, new crown disease has an amazing outdoor transmission power

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The new crown disease droplet can fly 8 meters

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Burt brocken pointed out that the flight distance of NCD in indoor environment is limited, so it is very effective to keep a distance of 6 feet (about 1.8 meters) in the case of indoor inactivity

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The researchers also stressed that even if these “effective safety distances” are maintained, it is necessary to avoid following people straightly and diverge the left and right distances

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It’s not suitable to drink too cold or too hot water

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Reduce the intensity of running, mainly to jog, while controlling the exercise time, not more than 1 hour, just a little sweating

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If you encounter haze, rain and other weather, it is recommended not to go out

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Sneezing and coughing can form a gas cloud composed of a large number of droplets, which can stay away from evaporation longer than a single droplet, Dr

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It is not recommended that extreme sports such as rock climbing, marathon, rowing and other events with high intensity, especially for people who have no sports experience in this field, they must not take risks

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02 time: ten in the morning and four in the evening

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Brody said the proposal may have led to the rapid international spread of the disease

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If you run behind, you are likely to rush into the droplets that have not yet landed

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Dr

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04 clean hands

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If the new coronavirus carrier breathes heavily, even coughs or sneezes during outdoor sports, the person who follows will be easily “hit” by the droplets spread by the runners in front once they are not equipped with appropriate protective measures

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Lydia bourouriba, an associate professor at MIT, found that people’s exhaled gas (including coughing and sneezing) can reach a maximum speed of 110 kilometers per hour, which can produce a gaseous cloud as long as 8.2 meters

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The study was jointly carried out by an international team of scientists including Bert brocken of Eindhoven University of technology in the Netherlands and Fabio Malizia of Belgium

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Recently, a research paper entitled walking, running and cycling: social distance version 2.0 published in Flemish daily in Belgium believes that the outdoor transmission ability of new crown disease far exceeds people’s expectation, and it is necessary to maintain a longer social distance when exercising outdoors I’m away

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