Which energy system is least likely to be affected by dietary intake?

The creatine phosphate energy system is least likely to be affected by dietary intake. This system primarily relies on stored creatine phosphate in muscles to rapidly regenerate ATP during short bursts of high-intensity activity, such as sprinting or heavy lifting. Unlike other energy systems that depend on carbohydrates or fats, the availability of creatine phosphate is more influenced by the body's intrinsic stores rather than dietary factors. Thus, while nutrition can impact overall performance and recovery, the immediate functioning of this energy system remains relatively stable regardless of diet.