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What we can learn from elite athletes who adjust their workouts in poor air quality

What we can learn from elite athletes who adjust their workouts in poor air quality

CBC
Saturday, July 22, 2023 1:21 PM GMT

For 15 years, Joanna Brown competed around the world at the highest level of triathlon, but near the end of her time competing she required a training adaptation she had little idea she would ever need: checking air quality before deciding on her workout.

Brown, 30, grew up near Ottawa and represented Canada at the 2020 Tokyo Olympic Games in the summer of 2021.

In August 2018, she had an unsettling experience over how climate change could disrupt her sport: she arrived in Kelowna to compete in the national championships, which were cancelled due to wildfire smoke from the province's 560 burning forest fires.

"The smoke was so bad," she said. "It was my first real exposure to wildfire smoke and air pollution and growing up in Ontario, it was never really an issue for us."

Since then, learning to adapt her training to consider extreme heat — which causes harmful amounts of ozone at ground level — and other air pollution, such as that caused by wildfire smoke, has become part of her routine.

While almost every resident in a province like B.C. is affected by periods of poor air quality exacerbated by extreme heat or wildfires, people committed to sports and physical performance are finding ways to try and safely continue doing what they love.

"It's hard, you want to be outside and doing all the things that you love but you don't really know what the effects are on your lungs and immune system and everything else," said Brown from Kelowna, where she moved after retiring from competition following the Tokyo games.

"I think that's the real scary part for me."

Long-term exposure to air pollution has been linked to heart and lung disease, and even dementia.

Brown still does plenty of running and mountain biking, but checks an air quality app before deciding on her outdoor activities.

"It's kind of become a nervous tick of mine," she said.

If the air quality index (AQI) on her app is below 150, she typically exercises outside. She calls an AQI of 150-200 her "grey zone," where she may not exert herself outdoors, choosing a gym workout instead or a walk while wearing an N95 mask.

An AQI of 150 is unhealthy for people sensitive to pollutants.

"I try to really limit my exposure when it's bad, but mental health is important too," she said about balancing exposure to bad air and benefits of daily exercise.

Read full story on CBC
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