What is the Slow Vital Capacity (SVC)?
The Slow Vital Capacity measures the amount of air that you can breathe-in or breathe-out during your largest possible breath. This test requires you to breathe gently. Your technician will ask you to breathe-in as deep as possible, then to relax and let all of your air out easily. Follow your technician’s instructions closely to minimize the number of trials you will be asked to perform. What is the Maximum Voluntary Ventilation (MVV)? The Maximum Voluntary Ventilation determines how much air you move in and out of your lungs over period of 10 seconds. During this test, your technician will ask you to breathe-in and out very fast and very deep (but not as fast as possible and not as deep as possible). The technician will give you constant feedback and encouragement during the test to insure that you give your hardest effort. If your first trial is acceptable, you will only be asked to perform this test once. However, most people find that they need one trial to warm-up first before th
