Detalhes da poluição atmosférica nas cidades, como se mede e o facto de ser mau para o coração (e pulmões) fazer exercício em ambientes poluídos, principalmente para quem sofre de apneia obstrutiva do sono:
http://www.wigantoday.net/news/offbeat/exercising-in-pollution-bad-for-the-heart-1-8282773
Citando:
"They found that air pollution makes it more difficult for the blood to flow into the lungs, specifically impairing the right ventricles.
Air pollution is measured in particulate matter (PM) - coarse dust particles which get into the lungs.
In London more than 3,000 deaths a year are attributed to particulate matter in the air and earlier this week it was revealed that three of the wealthiest boroughs had the highest rates of death caused by dirty air.
Despite a World Health Organisation recommendation that air pollution levels should not exceed a particulate matter rating of 2.5 micrometers at a maximal daily mean, cities worldwide regularly exceed the rating.
It was also found that patients with obstructive sleep apnoea - where the walls of the throat narrow during sleep - are most at risk."
(...)
"No strong evidence exists on effectiveness of face masks to eliminate or reduce particle exposure."
