Answer
In short term intense muscular activity, , or example a short 100 yds sprint aTP production is by aerobic respiration. The oxygen for the aerobic synthesis of ATP is supplied by myoglobin o the muscles- this is the source of a small amount o oxygen. The myoglobin cannot keep up with the muscular need for ATP so the muscles must find other ways o generating ATP,
Work Step by Step
It does this by borrowing Pi molecules transferring them to ADPs to generate ATPs.:
1. Using myokinase enzyme it transfers a pi from and ADP and attaches it to a different ADP molecule to synthesize an ATP.
.2 Using creatine phosphate it transfers a Pi from creatine phosphate to an ADP to form a new ATP
By employing these two processes the muscles ar able to keep up with the immediate demand or ATP.
When the phosphagen system falters the muscles turn to anaerobic respiration as a stop gap to supply ATPs. But this is limited help. Fortunately the cardiovascular system and respiratory systems kick in after about 40 seconds o exercise -- football, soccer etc; The supply o oxygen to the muscles rise for three or four minutes than steadie of at an equilibrium rate . Glucose and glycogen are used as fuel for 30 mins then atty acids become the major fuel as exercise continues.
