Be careful about outdoor sports in winter! Exercise in cold weather may damage the lungs for a long time _ scientific invention

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654381oct 6, according to foreign media reports, researchers in university of alberta warned that exercising in very cold weather would damage the lungs for a long time.

Michael Kennedy of university of alberta said that the main problem of strenuous exercise in cold weather is that the temperature is too low, which makes it more difficult for the lungs to warm and moisten the air, which will lead to the dryness of the inner membrane of the respiratory tract, and in some cases will cause irreparable damage.

Recently, Kennedy's research team found that the accuracy of the preferred laboratory test for predicting exercise-induced asthma in cold air is not as good as that of simply testing athletes to simulate winter games or hard runs after running in cold weather. The number of athletes suffering from sports asthma in cold weather may be underestimated.

Kennedy pointed out that every athlete has to be tested at different temperatures and different exercise methods. Speed skaters can slide at -5℃, and cross-country skiers can slide at-15℃.

To this end, Kennedy recruited a group of athletes who exercised in cold weather, and when the temperature reached-15℃, they completed the standard laboratory test and outdoor 5 km long-distance running test.

The results showed that among 16 participants, 5 were positive for exercise-induced bronchoconstriction in laboratory tests and 7 were positive for cold air tests. This figure is consistent with previous studies. Among all Nordic or winter athletes, 40% to 50% reported that they suffered from some kind of exercise asthma because of exercising in cold weather.

Kennedy said that when the lungs are exposed to cold and other stressful environments, they will not actively remodel, and with the passage of time, especially during exercise, lung function will become worse.

Researchers say that for those who are determined to exercise in the cold, it is best to warm up indoors to help expand the lungs, which can reduce the influence of cold air. At the same time, the study also shows that slightly covering your mouth also has a significant effect on reducing the contraction effect caused by cold air.

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