Creatine supplementation has long been surrounded by misconceptions, with many athletes attributing its effects to water retention or caffeine-like stimulation. However, emerging evidence reveals a far more sophisticated mechanism at work. According to research published in Clinical Science, creatine functions as a critical phosphate shuttle—a molecular transport system that regenerates ATP (adenosine triphosphate) on a millisecond timescale during intense muscle contractions. This process operates independently of oxygen and represents the fastest energy regeneration system available to muscle tissue. The phosphocreatine system supplies approximately 70% of ATP during the first three seconds of maximal effort, making it essential for explosive athletic movements. Understanding this mechanism helps athletes and fitness professionals optimize supplementation strategies and set realistic expectations for performance enhancement. Read the full article on GMJ Newsroom.
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