Read Phosphocreatine Recovery Between Sprints
A short NSEB read on phosphocreatine recovery between sprints, followed by the linked original question(s).
Living-system questions are solved by matching a structure or organism to its function, process and stated condition.
Core idea
Creatine kinase rapidly buffers ATP during intense contraction by transferring phosphate between ATP and creatine. During recovery, phosphocreatine is rebuilt using ATP supplied mainly by mitochondrial oxidative phosphorylation. Greater mitochondrial density and oxidative capacity therefore speed PCr restoration between repeated sprints.
Mitochondrial ATP supports PCr resynthesis
Phosphocreatine is resynthesised using ATP generated mainly by oxidative phosphorylation during recovery, so greater mitochondrial density and oxidative capacity speed the process.
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- ✓Creatine kinase rapidly buffers ATP during intense contraction by transferring phosphate between ATP and creatine.
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