Creatine Kinase/Phosphagen System

The video tutorial explains the role of creatine as a common nutritional supplement, its biochemical basis, and how it enhances exercise performance. Creatine is derived from amino acids and is not an essential nutrient. The enzyme creatine kinase facilitates a reversible reaction that transfers phosphate from ATP to creatine, forming creatine phosphate. This process helps maintain ATP levels during muscle activity without inhibiting glycolysis and the Krebs cycle. Creatine supplementation increases creatine phosphate levels, improving performance in high-intensity exercises like powerlifting and sprinting.

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