about front squats and back squats: do you think the strength is highly correlated? most people's numbers are way lower at front than at back squats. do you think, if you would work your front squat up to 140kg that your back squat would be much bigger than your last test of 140kg?
Sure it correlates. It's still the same movement. The only thing different is the point of balance and center of mass. On front squat, the weight is on the anterior side, on back squat, it's on the posterior side. And that makes a minor difference. The posterior hip and knee extensors work harder on the back squat, as front squats rely more on quads and spinal extensors. Or this is atleast my idea of the system. I think front squats work more on the core as whole, because the force that pulls your body to flexion is more in front. I think if I'd do back squats with good form, then yes, the front squats would have caused some progress (and the DL's too). It would be weird that you could front squat a ton but not back squat it. I'm not even sure if my front squat can get stronger than my back squat, due to mechanics. Haven't looked into it that hard.