It's important to keep terminology straight. There's the effort of pumping against resistance or force, and there's the effort of pumping 3x the number of strokes to get the job done.
It's easier to keep on point if you avoid the nebulous "effort" and talk about force needed for the final stroke, and the total number of strokes needed.
Think about hill climbing. You can say it's a difficult hill, but that doesn't tell anyone much. Better to talk about how steep, or how long, and of course the height.
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