What is the typical repetition range associated with glycolytic work?

• A. 10-20 reps
• B. 3-5 reps
• C. 8-12 reps
• D. 20-30 reps

Answer: (A)

Glycolytic work centers on high‑intensity efforts that last a mid-range of time, roughly 20 to 60 seconds, where anaerobic glycolysis provides the main fuel. When you choose a repetition range around 10–20 reps, you’re typically pushing a challenging load with a pace that occupies that time window, which activates glycolysis and lactate production. Shorter sets, like 3–5 reps, rely more on the phosphagen system for very quick, explosive output. Very high reps, like 20–30, tend to extend the effort toward longer durations and greater aerobic involvement, shifting the emphasis away from glycolysis as the dominant energy source. So the 10–20 rep range best fits the glycolytic energy system’s typical work duration.