Bone Strength

How is bone strength affected by muscle strength? When a muscle contracts, does the antagonist work a little as well to keep the bone straight? Hermann Goerner walked w/1000lbs across one shoulder & I think if I tried that it would smash up that whole side of my body. Did his bones get stronger with all that lifting or were they that strong all along?

are you talking about joint strength or bone “strength”? In any even proper weight training can increase both.