High temperatures, dry weather, and wildfires across the country have left air quality in terrible condition. São Paulo topped the list of cities with the worst air in the world last Monday (9), ranking first among the most polluted cities, according to real-time data from the IQAir platform, which monitors air quality in about 100 major urban centers.
In addition to all precautions, a question 'lingers in the air': For those who exercise outdoors, what actions should be taken during this period?
According to pulmonologist Jéssica Polese, it is necessary to reevaluate the times and places, especially for those who run or walk on busy streets: “Exercising in areas with heavy car and bus traffic - for those who already have chronic diseases - such as bronchitis, asthma, and emphysema can worsen symptoms,” she explains.
During physical activity, the energy expenditure rate is higher, and we inhale more pollutants. “Avoid exercising during the hottest part of the day, as solar radiation forms secondary pollutants due to particles emitted by vehicles, such as carbon monoxide. It is advisable to seek enclosed places, like gyms, or more tree-lined areas to carry out these activities,” she emphasizes.
She highlights that excessive heat can worsen existing respiratory conditions and contribute to the emergence of new respiratory diseases.
“Pollutant gases emitted mainly by vehicles and industries facilitate respiratory infections such as pneumonia, sinusitis, and tuberculosis. In addition, pollution causes oxidative stress, which is responsible for causing arrhythmias, hypertension, coronary diseases (heart attacks), and strokes (AVC).”
The tip is to look for times with less traffic when exercising outdoors and to stay hydrated and perform nasal rinses, as well as wearing a mask depending on the severity of the air quality index, which can be monitored through apps on smartphones.
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