Anaerobic Training Zone is defined as which percent of MHR?

Anaerobic Training Zone is defined as which percent of MHR?

• A. 60-80%
• B. 40-60%
• C. 20-40%
• D. 80-100%

Answer: (D)

Anaerobic training occurs at very high effort, near your maximum heart rate. At these intensities, the body can’t supply enough oxygen quickly enough, so energy is produced mainly by anaerobic pathways, especially glycolysis, which leads to rapid lactate buildup. That’s why this zone is defined as about 80-100% of maximum heart rate. Training here builds speed, power and anaerobic capacity, but it can only be sustained for short bursts. Lower zones rely more on aerobic metabolism, where oxygen supply matches demand.

Anaerobic training occurs at very high effort, near your maximum heart rate. At these intensities, the body can’t supply enough oxygen quickly enough, so energy is produced mainly by anaerobic pathways, especially glycolysis, which leads to rapid lactate buildup. That’s why this zone is defined as about 80-100% of maximum heart rate. Training here builds speed, power and anaerobic capacity, but it can only be sustained for short bursts. Lower zones rely more on aerobic metabolism, where oxygen supply matches demand.