The highest value of VO 2 during your test will be noted and reported in the form of relative and absolute VO 2 max. The increase in VO 2 during activity remains fairly linear until your maximal oxygen consumption level is reached at which point the slope of the plotted line will begin to plateau. Your VO 2, as measured by the metabolic cart, will be plotted on a graph against time. How Aerobic Capacity (VO 2 max) is calculated: Aerobic capacity tests generally end within 15 minutes. The test will end when you reach volitional exhaustion or when one of the following criteria is met: 1) the increase in your carbon dioxide production is significantly larger than the related increase in oxygen consumption (RER ≥ 1.15) 2) there is a plateau of your heart rate with increased exercise intensity, or 3) there is a plateau of your VO 2 with increased intensity. After the equipment has been applied, you will begin your test and a program on the attached computer will measure your volume of oxygen consumption, volume of carbon dioxide production, respiratory exchange ratio, and heart rate. A metabolic cart will be measuring the contents of the air you exhale through an expiratory tube connected to a secured facemask you will be breathing in unaltered air from the room. After you have been briefed by a technician on protocol you will be implemented with a heart rate monitor that is worn around the rib cage. Depending on your age and fitness level, a warm up speed will be selected. One of the most common protocols is the standard Bruce protocol, which involves increases in speed and treadmill grade at the end of each three minute stage. This maximal exercise test is run on a treadmill and there are a number of different protocols which can be selected. What to Expect:įor an aerobic capacity test, you should arrive to our facilities in appropriate active wear having had only a light meal. These factors include: increased capillary density in the muscle, a greater blood volume with a higher red blood cell count, higher levels of hemoglobin and myoglobin, increased levels of aerobic enzymes, increased size and density of mitochondria, more efficient ATP synthesis, and improved blood direction to active muscle. Additionally, a number of physiologic changes will improve oxygen delivery. An athlete can improve their systolic volume through aerobic exercise training which will lead to ventricular hypertrophy. Cardiac output is reliant on systolic volume and heart rate. If you want to improve your VO 2 max, you can improve your cardiac output with aerobic training. Relative VO 2 max is better for comparing your results to those of others because it takes into account your weight, however, both values can be useful for personal comparison if you choose to return to our facilities for an additional test. VO 2 max can be expressed in milliliters of oxygen per kilogram of body weight per minute, which is known as relative VO 2 max, or in liters of oxygen per minute, which is known as absolute VO 2 max. This value is directly indicative of your level of cardiovascular fitness. It is the product of your maximal cardiac output and your arterial-venous oxygen difference. Your aerobic capacity, as measured with a VO 2 max test, is the maximal amount of oxygen your body can consume during maximal intensity exercise.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |