Thanks Scott, hugely appreciated.
I’d read Training for the New Alpinism a couple of years ago, but had trouble finding an answer looking back through.
Some of the confusion was that the long aerobic sessions specified not to worry about it but the shorter sessions didn’t, and the suggestion to jog any flat sessions to maintain zone 2. Would be fantastic to add it to the program – and just a note, currently the first of the longer sessions doesn’t specify not to worry about it, but from the second week onwards it does say. So it would be good to also copy that across.
Trying to think about it logically, it seems there is a balance between the benefits/recovery needs between the two suggested approaches; i.e longer duration in zone 2, with concentrics only (e.g. stairmaster) v.s. shorter duration zone 2 with concentric and eccentric (uphill then back down).
Kind regards,
Zac