Charles Atlas sold isometric muscle courses in comics under the name of dynamic tension.
He also "supplemented" these with weight training 3x a week wherein he would "test" himself, but he only confessed to doing this later on.
I just did not like Nelson's post because 1. the scientific basis of strength and how athletes around the world are gaged is by 1 rep max strength.
2. Most of those exercises and the weight/rep range listed steer more towards endurance and cardiovascular development rather than strength.
3. Pushups do not build much strength. They build muscular endurance. Granted, moving onto harder variations like one-arm pushups or pushups/one-arms on a cable become very hard and can build great strength and soem decent muscle(look at gymnasts), but they only use about 60% of your bodyweight and that's if you do them textbook. Also, I have done cubic assloads of pushups in the past and at one point could do 15 perfect one-arms with each arm so I know something about this subject.
As for muscles, well when it comes to actually building muscle and strength itself, there isn't much difference between a barbell or a high quality machine like Hammer Strength besides the balancing aspect. Unless you are competing in weightlifting or powerlifting.
And the reason you can do WAY more weight on a leg press vs. a barbell squat(which is the best damn exercise ever for pure size and strength) is because A. Squats are harder period. B. you have to balance the weight and
squat your bodyweight plus that additional weight C. Your entire body contracts D. your abdominals and lowerback are heavily worked and strengthened from it.
If 2 guys weigh 200lbs and all thigns being equal, one guy can routinely rep 100lbs for 50 reps in a minute and the other guy squats 300x5, who is stronger? I hope that's obvious, but if not I'll explain why the heavy squatter is far stronger.
He is stronger because he is lifting more weight. His muscles, tendons and ligaments have all greatly increased in strength from having to bear and lift the heavy load. His cardio may not be so stellar, but he's strong from head to toe. If he were asked to perform half his weight for reps he'd look at you cross eyed and asked if you were a cardio guru. He'd probably bust out 20-30 reps before his cardio gave out. An ok showing.
The other guy has nicely defined legs with some decent size, and his cardio is through the roof! But, he's a weak bitch in reality because if he put that same 300lbs on his back by the time he hit parallel he'd probably drop like a rock with no chance of getting the weight up because he has not built the strength throughout his body to lift that weight.
You see, the stronger you get, the more reps with a given light weight you will be able to do. This is fact. If a guy routinely benches 225 by 12-15 and you bench +300 for reps, chances are good that you could out rep him with his weight, even if you don't typically go that high rep because you have strength in reserve which he does not and which is why he can't bench the heavier weight.
And lastly, when comparing 2 fighters of equal ability, the bigger, stronger man is likely to win. BUT, if 2 fighters meet up and one is significantly better at fighting than the other, but the other guy is alot stronger then by virtue of his surplus strength he is afforded some leeway over the guy depending more on his skill.
I've seen some smart ass scrappers pick a fight with a big strong guy that they were technically superior too, that got manhandled and curb slammed in seconds.
Pure strength and power can end things immediately. Endurance never finished anything fast.
I'm no expert, but I thought I'd clear a few things up.