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Exercise is an important factor in staying fit and healthy. Sometimes, however, exercise can be a trigger for asthma. When exercise results in temporary narrowing of the airways in an asthmatic it is referred to as Exercise-Induced Asthma (EIA). With careful management and control people with asthma don’t have to stop or restrict any of their usual activities.

Why does exercise trigger asthma?

Usually when you breathe your nose plays a warming, moisturising and filtering role. When exercising you breathe faster through your mouth, thereby cutting out the function of your nose. This means that the air going into your airways is colder and dryer which can cause irritation and make the muscles around the airways tighten.

How do I know if I have Exercise-Induced Asthma?

Asthma & Exercise - know how to deal with an emergency

Asthma & Exercise – know how to deal with an emergency

Depending on fitness levels, most people experience shortness of breath during exercise. If you experience asthma symptoms during or after exercise and they don’t improve after 10 minutes of resting, it may be a sign that you have Exercise-Induced Asthma (EIA). These symptoms include:

  • Coughing
  • Chest tightness
  • Shortness of breath
  • Wheezing

While people who experience the usual breathlessness of exercising will catch their breath after resting, someone with EIA can experience symptoms for 15-30 minutes if left untreated.

The conditions of exercise generally determine how severe your symptoms are. In most cases, the drier and colder the air the worse your symptoms will be. More vigorous types of exercise will also cause symptoms to be more severe.

Can it be managed?

Although asthma is incurable, it is a very manageable condition. In fact, there are many well known athletes who have managed their asthma so that they can compete at an elite level. In order to develop the most effective management plan you should see a doctor for an accurate diagnosis and the best advice on treatment.

If you follow your doctor’s advice and control your asthma with the prescribed amount of preventer medication, you may cease to experience symptoms resulting from exercise. Your doctor or nurse may also prepare an Asthma Action Plan with you that will clearly instruct you on how to control your asthma. Following this Action Plan carefully will help you to reduce the risk of an asthma attack and reduce your symptoms as much as possible.

Other things that you can do to manage your EIA include:

  • Warming up with light exercise 15-20 minutes before you exercise or play sport can help reduce your risk of experiencing EIA symptoms
  • Use your asthma reliever 5-10 minutes before you exercise
  • Always keep your reliever medication closeby when you exercise
  • Allow yourself to cool down after exercise using light exercise or stretches

What do I do if I develop asthma symptoms while exercising?

If you experience exercise-induced asthma while exercising you should:

  • Stop exercising immediately
  • Follow your asthma action plan if you have one
  • If you don’t have an asthma action plan you should use your prescribed reliever medication
  • Wait 5-10 minutes
  • Only return to exercise if you are free from asthma symptoms and can breathe easily

If after returning to exercise you experience symptoms, you should:

  • Stop exercising immediately
  • Repeat your asthma action plan or re-take your prescribed reliever medication
  • Do not return to exercise for the rest of the day
  • See your doctor to review your asthma treatment

To learn more about first aid management for asthma, read Guideline 9.2.5 by Australian Resuscitation Council and New Zealand Resuscitation Council.

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