What repetition range is typical for the oxidative energy system?

• A. 3-5 reps
• B. 6-8 reps
• C. 8-12 reps
• D. 10-15 reps

Answer: (A)

The oxidative energy system powers sustained, aerobic effort, so training it effectively comes from longer time under tension rather than short bursts. Short, heavy sets rely on the phosphagen (ATP-PC) system and fatigue quickly, while longer sets with more repetitions at lighter to moderate effort push the body toward aerobic metabolism. Among the options, the larger repetition range best reflects oxidative training because it implies more sustained work and a greater aerobic demand. The smallest range would be more characteristic of the phosphagen/glycolytic zone.