ENERGY DURING ATHLETIC EVENTS:::
In brief there are three principle systems for energy generation (1) Glycogen lactic acid system that generates 2.5 M of ATP per minute (2) phosphagen system (ATP storage and creatinine phosphase ) that generates 4M of ATP per minute and (3) Aerobic system that generates 1M of ATP per minute Although the energy output from aerobic system is less as compared to anaerobic system endurance is unlimited with aerobic system it remains available as long as nutrients lasts however phosphagen system and glycogen lactic acid system can provide energy for 10-15 seconds and 30-40 seconds respectively
Thus while anaerobic pathways are essential for power needs aerobic pathway is essential for prolonged athletic events or exericse performance in athletic events is often determined by how rapidly the athlet can recover strength between surges of activity the phosphogen system takes about 3 to 5 min for replenishment whereas the glycogen lactic acid system may take more than an hour for the aerobic system there are two phases::
(1) short term recovery lasting for about an hour and (2) long term recovery lasting for several days the short term phase of recovery is the function of oxygen debt which is defined as the extra amount of oxygen that must be taken into the body after an athletic event to restore all the metabolic system back to their full normal state A person can develop oxygen debt upto 10-12 litres out of which 3-5 litres comes from myoglobin (muscle protein storing oxygen ) and haemoglobin of blood supplied to muscle air lungs body fluids etc other 8 litres comes through glycogen lactic acid system that is a slow process
the long term phase of recovery of aerobic system depends on glycogen formation which depends on diet high carbohydrate diet can enhance this phase of recovery
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