Split Variance
What is Split Variance?
Split variance quantifies how consistent your pace was during a rowing piece. A perfectly even-paced 2K where every 500m split is identical has zero variance. A "fly and die" 2K where the first 500m is 5 seconds faster than the last has high variance. Research and coaching experience consistently show that lower split variance correlates with better performance — even or slightly negative splits produce faster total times than aggressive positive splits. Split variance is calculated from the individual 500m (or interval) splits recorded by the PM5. Monitoring split variance across training sessions reveals pacing tendencies and improvement in race execution.
How Watta Uses Split Variance
The Pacing component of Watta's Effort Score (15% of total) directly rewards even and negative splits. Low split variance earns higher pacing points, while erratic pacing or severe positive splits reduce the pacing score. This incentivises smart, sustainable pacing.
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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