Is lactic acid energy system is used for fast short sprints or no?

The lactic acid energy system, also known as the anaerobic glycolysis system, is primarily utilized during high-intensity activities lasting from about 30 seconds to 2 minutes, such as sprinting. While it can support short bursts of effort, it is not typically used for very fast, short sprints lasting only a few seconds, where the ATP-PC system (phosphagen system) is more dominant. Therefore, while lactic acid does play a role in sprinting, it is more relevant for sustaining efforts beyond the initial explosive seconds.