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Title : Why is ice hockey the one youth sport producing outbreaks of coronavirus?
link : Why is ice hockey the one youth sport producing outbreaks of coronavirus?
Why is ice hockey the one youth sport producing outbreaks of coronavirus?
"One critical way hockey differs from other contact team sports is how players do line changes — substitutions of groups of players — and are expected to sprint for nearly the whole time they are on the ice. Experts say it probably leads to heavier breathing, resulting in more particles being exhaled and inhaled. Jose-Luis Jimenez, an air engineer at the University of Colorado, speculated that the spaces occupied by rinks keep the virus suspended, perhaps six to nine feet, just above the ice. Similar outbreaks have been documented in other chilly venues — meat processing factories and at a curling match earlier in the pandemic. 'I suspect the air is stratified,' he said. 'Much like in a cold winter night, you have these inversions where the cold air with the virus which is heavier stays closer to the ground. That gives players many more chances to breathe it in.'...... Surrounded by plexiglass not only to prevent errant pucks but also to keep the airflow stable so the ice can remain cold, there’s little ventilation and humidity by design in ice rinks.... In higher humidity, the virus attaches to bigger droplets that drop faster to the ground, decreasing the chance that someone will inhale them. The drier the air, the faster droplets will evaporate into smaller-size particles that stay in the air, increasing the concentration..."
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"One critical way hockey differs from other contact team sports is how players do line changes — substitutions of groups of players — and are expected to sprint for nearly the whole time they are on the ice. Experts say it probably leads to heavier breathing, resulting in more particles being exhaled and inhaled. Jose-Luis Jimenez, an air engineer at the University of Colorado, speculated that the spaces occupied by rinks keep the virus suspended, perhaps six to nine feet, just above the ice. Similar outbreaks have been documented in other chilly venues — meat processing factories and at a curling match earlier in the pandemic. 'I suspect the air is stratified,' he said. 'Much like in a cold winter night, you have these inversions where the cold air with the virus which is heavier stays closer to the ground. That gives players many more chances to breathe it in.'...... Surrounded by plexiglass not only to prevent errant pucks but also to keep the airflow stable so the ice can remain cold, there’s little ventilation and humidity by design in ice rinks.... In higher humidity, the virus attaches to bigger droplets that drop faster to the ground, decreasing the chance that someone will inhale them. The drier the air, the faster droplets will evaporate into smaller-size particles that stay in the air, increasing the concentration..."
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