What happens to an officer's maximum output at 30 seconds when using the Lactic Acid System?

When an officer engages in physical activity for about 30 seconds, the body primarily relies on the Lactic Acid System for energy production. This system kicks in when the demand for energy exceeds the oxygen supply available for aerobic metabolism. As a result, during intense exertion lasting around half a minute, the body uses anaerobic glycolysis, leading to the creation of lactic acid.

The specific outcome of this type of energy system usage is that after about 30 seconds of maximum effort, the officer's output is not sustainable at peak levels. It typically registers at approximately 55% of the maximum output capability. This decrease occurs because the accumulation of lactic acid can lead to muscle fatigue, impacting performance. Therefore, while the officer can initially exert maximum force, the ability to maintain that output significantly diminishes due to the physiological effects of lactic acid and muscle fatigue. This is why the correct understanding aligns with the option indicating a drop in output to 55% of maximum after 30 seconds in high-intensity situations.