Well, two things. First, I’m not primarily lifting to help my cycling, it’s overall strength and trying to mitigate age-related sarcopenia, overall function, mitigating long days sent seated (so, for example, if I have to drop something for time, I’d rather drop presses than pullups or rows), addressing the effects of old injuries, etc. I’d definitely do something differently if I was trying to come up with something that was primarily to support cycling (and my son, whose coach is the current US MTB Marathon champion, uses a very different program). As you suggest, how any program is structured is related to goals. I never do curls–not functional, and my biceps get plenty of stimulus from pullups or rows. I don’t do leg curls/extensions–again, minimal value for my goals. That’s why I like the concept of movements, not body parts or muscle groups.
Second, and I should have clarified, I structure the legs and upper body work differently. I have one “big” lift variation each session, either a deadlift or a squat, that is high weight/low reps/longer rest intervals-3 or 4 sets by 4-5 reps, usually with 3 minute rest. Then I do a unilateral leg exercise, again relatively heavy. That’s about 40% of the total workout time. The upper body work is all supersets, shorter rest, lighter weight. I do 20 minutes or so of mobility every day, which has both general advantages and has had direct benefits for my cycling as well (my cross remounts are WAY better with improved hip mobility).
So my typical weekly off-season routine is 6-7 hours on the bike/trainer (LV with extra Z2), 2 hours of strength training with about 40% legs/60% upper body core, and 1.5 hours of mobility, along with work, kids, etc. This has worked out for me and I’ll probably keep it up until I retire, when I’ll try to up my bike volume.
As you say, this would not be optimal for someone who wanted to push the pedals harder, but that’s not my primary goal with the strength workouts.
