noun
- A compound found in muscle cells that stores high-energy phosphate groups and serves as a rapid source of energy for muscle contraction.
Usage: biochemistry; also called creatine phosphate
Examples
- Phosphocreatine is broken down during intense exercise to quickly replenish ATP in muscle cells.
- Athletes interested in performance often learn about phosphocreatine's role in short bursts of energy.
- The body regenerates phosphocreatine during rest periods after strenuous activity.
- Phosphocreatine levels in muscles are highest when the body is at rest.
- During a sprint, phosphocreatine provides immediate energy before other metabolic pathways kick in.