Try holding a straw in your mouth and pinching your nostrils shut. Breathe only through the straw "until you start to panic" from an insufficient supply of air, said registered nurse Susan Ross.
"That's what it's like to have asthma," she said. "It's a horrible, terrifying feeling to have."
Ross, a clinical adviser for the Minnesota Department of Health's Asthma Program, was among a group of asthma experts who attended the Minnesota Youth Ski League's ski swap and expo Saturday in Bloomington. They were there to share information with coaches and young athletes about how those with asthma can stay safe during cross-country skiing or other sports.
An asthma attack causes lung tissues to swell. Mucous production increases, "like a sticky glue in your lungs," said Ross, who has asthma herself. Muscles tighten around airways, further constricting them.
Asthma need not interfere with participation in sports, said Dr. Charlene McEvoy, medical director of the Asthma Center at HealthPartners Specialty Center, who spoke Saturday.
"Asthmatics can be great athletes — there's no reason why not," she said. Middle and high school students with asthma participate in youth sports at about the same rate (56%) as kids without asthma. "A good chunk of Olympians have asthma."
On the other hand, its potential risks should not be underestimated, Ross said.
The Department of Health has developed a free, 35-minute interactive training course on its website to teach coaches how to recognize and respond to symptoms of an asthma attack. "If you're coaching a youth athlete, we want you to take the course," said Kelly Raatz, the department's asthma communications and program planner.