Kinesiology 3330F/G Lecture Notes - Lecture 5: Vo2 Max, Exercise Intensity
21 Nov 2016
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Pulmonary and whole muscle o2 uptake at the on & off transition to moderate and heavy intensity exercise. Looking at onset of exercise (left) and recovery from exercise (right) during heavy and moderate intensity. These systems allow pulmonary o2 uptake on a breath by breath basis- can determine a profile that allows us to look at what happens on the onset of exercise. The o2 uptake is does not increase instantaneously. Looked at muscle o2 utilization- take blood samples at specific times- measure the temperature of the blood- as blood flow increases, temperature of blood increases. Mitochondria in the muscle doesn"t store o2, its utilized. Any increase in muscle vo2 has to reflect mitochondria utilization. At end of exercise- o2 utilization does not decrease instantaneously. If measuring at pulmonary system- have a good idea of what"s happening at the muscle level. Pulmonary o2 uptake at the on and off transition to moderate intensity exercise- o2 deficit and epoc.
