UT1 Training (Threshold)
What is UT1 Training (Threshold)?
UT1 is the second-lowest training intensity zone in rowing, sitting between UT2 (aerobic base) and AT (anaerobic threshold). UT1 corresponds to approximately 75-85% of maximum heart rate and is often called "threshold" training because it sits near the lactate threshold — the point where lactate production begins to exceed clearance. UT1 effort feels "comfortably hard" — you can speak in short sentences but not hold a conversation. Typical UT1 workouts include 3-4 x 10-15 minutes at threshold pace with 3-4 minutes rest, or 2 x 20 minutes with 3 minutes rest. UT1 makes up approximately 10-15% of a well-structured rowing programme. It bridges the gap between easy aerobic training and hard race-specific intervals.
How Watta Uses UT1 Training (Threshold)
Watta identifies UT1 training through heart rate zone analysis. The Cardiac Load component of the Effort Score applies non-linear scaling that differentiates UT1 from UT2 effort, appropriately weighting the greater physiological demand of threshold training.
Further Reading
- Concept2 Training Resources — Official training guides and workout plans from Concept2.
- Concept2 RowErg Specifications — Technical specifications and performance monitor details.
- World Rowing — The international governing body for the sport of rowing.
Frequently Asked Questions
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