NETA Personal Trainer Practice Exam

Which activities typically depend on Anaerobic Glycolysis?

1. Marathon running

2. 200m-800m sprints

3. Walking

4. Cycling at a steady pace

The correct answer is: 200m-800m sprints

The activities that typically depend on anaerobic glycolysis are those that require short bursts of high-intensity effort, lasting from about 30 seconds to a couple of minutes. This energy system is utilized when the demand for energy exceeds the capacity of the aerobic system to deliver oxygen quickly enough. In the case of the 200m to 800m sprints, these running distances can be completed at a high intensity over a duration that is perfect for anaerobic glycolysis to contribute significantly to the energy supply. During these activities, the body primarily relies on stored carbohydrates, converting glucose into energy without the need for oxygen, which is fundamental in anaerobic glycolysis. This process leads to the production of lactic acid, which can contribute to muscle fatigue but is vital for high-intensity efforts. On the contrary, marathon running primarily utilizes the aerobic system over a longer duration, while walking is a low-intensity activity that also relies on aerobic metabolism. Cycling at a steady pace is similar to walking, as it does not typically require the high-intensity bursts seen in the anaerobic glycolysis pathway. Thus, the 200m to 800m sprints are the ideal examples where anaerobic glycolysis is utilized most effectively.