All that squatting for 50lbs??? Advance athletes don’t need to squat twice a week and most can’t handle squatting more then once.
To be precise, I just looked back at my log and before I started Smolov my 9RM was 225 and my 3RM was 265, so my previous max was more like 285. 315 was from memory. 12 days later I completed 10×3 @275, which corresponds to a max around 325. The rest of the gains came from squatting 2x/week with speed work, tempo, etc. for the next month or two.
Squatting 1x/week vs. 2x/week depends on the athlete and the program, but I think lower body lifting twice a week is standard and very effective, even if just for maintenance. Of course, lifting once a week also has its place, especially during certain parts of the season etc. etc…. But in general.