Aerobic Threshold

Aerobic Threshold: The aerobic threshold is the exercise intensity at which lactate begins to accumulate above resting levels, typically occurring at 55-70% of VO2 max in rowers.

What is Aerobic Threshold?

The aerobic threshold (AeT) marks the transition from easy, primarily fat-burning exercise to moderate intensity where carbohydrate metabolism increases. Below the aerobic threshold, the body can sustain exercise almost indefinitely. Training at or just below this threshold (UT2 zone) develops the aerobic base that underpins all rowing performance. In heart rate terms, the aerobic threshold typically corresponds to 60-70% of heart rate reserve for trained rowers. Blood lactate at the aerobic threshold is approximately 2 mmol/L. The aerobic threshold improves with consistent training, allowing athletes to maintain higher paces at the same physiological cost. This is the primary target of steady-state training in rowing.

How Watta Uses Aerobic Threshold

Watta's heart rate zone system identifies your aerobic threshold zone (Zone 2) using the Karvonen method. By tracking your pace-to-HR ratio across sessions, Watta helps you monitor aerobic threshold improvements over time through the Aerobic Efficiency metric (watts per heartbeat).

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