How Threshold Training Works

Direct Answer
Threshold training improves the ability to sustain high-intensity aerobic output by raising the intensity at which fatigue rapidly accumulates.

Primary Mechanisms
Threshold training enhances lactate transport, buffering capacity, and aerobic power at near-maximal sustainable intensities.

Constraints and Risk
Threshold work generates significant fatigue and must be dosed carefully. Excessive frequency increases injury risk and recovery burden.

Practical Relevance
Threshold training is effective for improving performance ceilings but should complement, not replace, lower-intensity aerobic work.

What Is Training Load? | What Is Fatigue? | What Is Recovery?