Combined, the atp-pc system can sustain all-out exercise for up to 10-15 seconds and it is during this time that the potential rate for power output is at its greatest if activity continues beyond this immediate period, the body must rely on other energy systems to produce atp as the limited stores of both atp and pc will be exhausted and will need time to replenish.
Resynthesis of creatine phosphate in human muscle after exercise in relation to intramuscular ph and availability of oxygen sahlin k, harris rc, hultman e after exhaustive exercise the muscular store of creatine phosphate (cp) is almost completely depleted. We examined the effect of differences in exercise intensity on the time constant ( tc) of phosphocreatine (pcr) resynthesis after exercise and the relationships between tcand maximal oxygen uptake.
Phosphocreatine resynthesis is not affected by creatine loading med sci sports exerc, vol 31, n. Fitted models of phosphocreatine (pcr) resynthesis forsubject 1(a ), subject 2 (b ∗), andsubject 3(c +) in study 1, with horizontal line representing pcr at rest.
The ck reaction catalysed by its mitochondrial isoenzyme mtck in the mitochondrial intermembrane space is directed towards the synthesis of another high-energy phosphorus compound, phosphocreatine (pcr), which is liberated into the cytoplasm through the mitochondrial voltage-dependent anion selective channels (vdac) leaving another reaction product, adp, for further atp resynthesis in the mitochondrial matrix.
To determine whether skeletal muscle oxidative metabolism is impaired in multiple sclerosis (ms), phosphorus magnetic resonance spectroscopy was used to measure the rate of intramuscular phosphocreatine (pcr) resynthesis following exercise in ms and controls.