Re: high intensity vs. low intensity training, continued
It's important, I think, that this is low intensity ... with a difference.
When most of us climb on an erg to do lower intensity work, we don't pull as hard. Sure, our stroke rate drops, but the strength of our pull also drops.
The lower training splits these kids used maintained the same amount of force for each stroke, but paired them with longer recovery phases. The actual pull was just as hard as when rowing at a much more intense split ... but the metabolic intensity was reduced by taking longer to get back to the starting position for the next pull.
Which means that the kids were always training for power output, always training the CNS for the same strength intensity, regardless of the metabolic intensity.