START WITH THE SET
The same rower needs different targets for one minute and four minutes.
Human power declines as effort duration increases. That basic power-duration relationship is why short rowing intervals can be performed at substantially higher power than long ones, and why a target for one repetition cannot be transferred blindly to another duration.
The number of repetitions matters too. A power you can sustain for one maximal four-minute effort is not automatically the right target for four four-minute repetitions separated by incomplete recovery.
FOUR INPUTS
Ask these before choosing a split.
How long is each rep?
Longer repetitions require a lower sustainable power than short repetitions.
How many reps?
The set target must leave enough capacity to complete the prescribed number with useful quality.
How much recovery?
Incomplete recovery reduces what can be repeated; more recovery changes the feasible target and the nature of the set.
What is the intent?
Training, rehearsal and a maximal benchmark should not all be paced as though the objective were identical.
WHY NOT JUST USE 2K PACE?
Race pace is a useful reference, not a complete interval model.
Rules such as “2k pace plus or minus a few seconds” are easy to use and can be reasonable coaching heuristics for familiar sets. They still compress several variables into one reference performance and assume athletes with the same 2k result have similar power-duration and recovery profiles.
For work intervals of at least one minute with seated recovery, Rowing Intervals can use a Critical Power and W′ model when qualifying maximal evidence is available. Shorter intervals and easy-row recovery can still be prepared, recorded and learned from, but Intervals does not force the CP/W′ forecast onto those sets.
How Critical Power and W′ are usedDURING THE SET
Watch for controlled decay, not forced perfection.
Small variation between repetitions is normal. The useful question is whether the target produces the intended work across the set. A large collapse after an aggressive opening piece is evidence that the target or execution was mismatched; perfectly identical pieces are not the only definition of a good workout.
Keep stroke rate in view as well as pace. The same average power can be produced with different stroke-rate and force strategies, so execution context matters when comparing sessions.