Your child will blow into a spirometer to measure how fast he or she is able to move air in and out of the lungs.
After successful completion, your child will run on a treadmill for four to eight minutes to achieve maximum heart rate.
Your child will be placed on an oxygen and heart rate monitor to allow continuous monitoring. While running, he or she will be asked to rate on a scale of 1-10 the level of difficulty breathing.
After exercise, your child will continue to perform a minimum of two spirometry maneuvers every five minutes for 30 minutes. If there is a significant change in your child's lung function, he or she will be treated with a bronchodilator before discharge.
The test takes about 1½ to 2 hours. Timing includes explanation and practice testing.