Coach Cliff Scherb

Training Peaks, Athlete Resources, Coach Cliff Scherb

★★★Efficiency Factor - signs your aerobic capacity are improving.

We have known for decades that if heart rate during an all-aerobic (below lactate/anaerobic threshold) workout rises while the intensity (power or pace) stays the same then the athlete is not operating efficiently and his or her aerobic endurance is questionable. The same is true if heart rate stays the same and power decreases or the pace slows.