Is the really high reps= v. little strength true? When I was young I worked in a warehouse stocking boxes off of a conveyor belt 40hrs a week. It became relatively low wt fairly quickly, and even low wt when I would max out boxes putting 3 side by side and needing to squeeze 3 10lb boxes together so the middle one wouldn't fall and no box would get damaged, or doing that and putting a cpl more on top and deliberately squeezing and flexing and taking my sweet time to do that 'rep'. I was doing prob 1K reps, maybe 5K reps/day, days/wk.

Despite being 6'2" and only about 210lbs. 300lb+ semi pro arm wrestlers could not pin me. I couldn't pin them either, but all matches would end in a stalemate (they would quit with a drained, confused, and sometimes unhappy look on their faces). Would this be attribued to muscluar endurance and is this completely different than muscle strength? Or strength of tendons? (which I know my hand and wrist tendons were extremely strong as I was a freak in using v. resistant hand grips at that point in time as well, not to mention my forearms) Or a combo? Was muscular strength not a factor? I thought I was strong at the time, but I certainly did not have explosive power. Nor did i have the ability to lift heavy per se. Is that the key factor in measuring 'strength'?