Not power though they seem to have some correlation. Ring strength is different than power. I was watching Monzon fights and I was shocked at his strength. Nobody ever muscled him. He was like iron and so skinny at the same time. Best example of Strength is probably foreman shoving Frazier like a ragdoll. I got Monzon, Foreman, Lamotta as the strongest fighters I've seen. Barrera was also weirdly strong too in an unexpectedly.
Bob Fitzsimmons! I imagine he would have been unbelievably strong . He worked as a blacksmith . Pounding metal with hammers all day would strengthen you better than any weights program.
Randall "Tex" Cobb was a freak of nature in the strength department. Larry Holmes on Cobb "He could get a job in the Army, not working on tanks, but being a tank". More on Cobb from Holmes " During stampedes, He's so strong he doesn't call the cattle in, he carries the cattle in". And last but not least, Holmes again on Cobb "He [Cobb] doesn't use wheelbarrows when working in his garden". Holmes added, "He uses an El Camino car". Cobb finished by saying "The mf'er grips the rear bumper and doesn't look to see if the [parking] brake is on, he just pushes the damn thing--filled with dirt--, on two wheels, to his garden".
Did Larry also say "Tex Cobb went fifteen rounds with me & at the final bell begged referee Steve Crosson for 3 more rounds & he'd be World Champ" ?? Because Tex did & Steve verified it. Larry's hands were so swollen & painful he couldn't hit Tex any more. Larry went to hospital for Xrays on his hands Tex went to a bar for a beer. Tex was the toughest SOB Ive ever come across