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Create a 7 pages page paper that discusses critical discussion of the use of ventilatory and blood lactate threshold in the evaluation or predicted performance and training prescriptions and practical
Create a 7 pages page paper that discusses critical discussion of the use of ventilatory and blood lactate threshold in the evaluation or predicted performance and training prescriptions and practicality. The level of peak oxygen uptake is a measure of the ability of the organism to transport and use oxygen. It is calculated in absolute levels liters per minute (l/min) or a relative measurement of usage of oxygen per kilogram per minute (ml/kg/min) (Bassett and Howley 2000). Nevertheless, some new studies have suggested that the so-called anaerobic threshold is a much more reliable method for evaluating physical endurance and fitness (McArdle, Katch, and Katch 1996).
In order to understand this, we must first talk about the metabolism that is involved during physical exercise. The main systems of energy production during exercise are ATP system, anaerobic system or glycolysis and aerobic system or mitochondrial respiration. However, we must understand that they are not separate but are simply all part of one chain of events that eventually leads to production of ATP, which is the main source of energy in the human organisms. During the low-level exercises which don’t require much energy muscle fibers almost exclusively use aerobic mitochondrial production of energy. This is a much slower source of energy compared to anaerobic glycolysis but much more effective because from one molecule of glucose produces 29 to 30 molecules of ATP, instead glycolysis produces only 2 molecules of ATP from 1 molecule of glucose. It is estimated that mitochondrial respiration is 19 times more efficient than glycolysis. This is why during low-level exercise our body tends to use mitochondrial respiration as a source of energy. However, in the metabolism of glycolysis - the main energy source used by muscles is conducted through both aerobic and anaerobic metabolism. In the anaerobic metabolism, glycolysis is converted to pyruvate. This molecule is then further metabolized to oxalate and eventually to CO2 and water in the mitochondrial aerobic metabolism. .
