I'm not sure where this idea came from that people do one or the other. Except for the advanced lifter, both will happen from either program. Show me a person who is really big and they are likely pretty strong as well (see Ronnie Coleman). Same with the other direction.
EDIT
From his IG https://www.instagram.com/reel/C1FBwQTPxmr/
Yep, not big at all...
So the bulkier person could theoretically perform better, but doesn't in practice because their body isn't able to actually utilize the muscle effectively.
That's why farmers often outperform lifters outside of the exact niche the lifter trained
So we should talk about at least intermed. trainees.
And in those, the correlation does not go both ways. Getting more muscles does increase the strength, but getting stronger does not necessarily increase muscle (technique, neurological adaptations, etc).
Simply speaking, guys with big pecs and triceps are going to be strong in bench (even if they don't train it), but strong benchers (especially if they mostly train in 1-3 reps range, outside of hypertrophy 5-30) don't necessarily have big pecs/triceps.
So yeah, the parent was correct in asking what the previous parent mean by having great gains. Because getting stronger does not necessarily mean that your muscles also grew substantionally. Also, if you gained weight also doesn't mean the muscle gain. Due to leverages, the bench and squat results increase even if all you gained was pure fat.
I know I’ve definitely seen the difference training with a personal trainer telling her I want to train for aesthetics vs strength and vice versa.
There is a strong correlation but it’s definitely not 1.
"Traditionally" the rep ranges recommended for hypertrophy has typically been significantly higher than the ranges recommended for strength, but the number of sets recommended is often also significantly higher, often translating to significantly higher total volume.
> I've seen other colleagues and how they trained -- I can say there was 100% correlation that those people who were not training hard also did not have big gains. People who had enough breath left in them to chat in the gym simply did not gain as much as people I saw as training hard.
Well, yes, but training with lower weights and higher rep ranges does not automatically translate to "not training hard".
Having gone through a period of really high rep training, including for a short period doing 1000 squats per day as an experiment, mostly bodyweight, that was far harder exercise than when I 1RM'd 200kg. But the effects are different.
I much prefer Stronglifts and Madcow but because I favour strength over size, and it's far more time efficient, not because you can't also get results with more, lower-weight reps.