no its the same thing but thats old knowledge it is proven that you get more gains (muscle) by lowering the reps and upping the weight
example if you do 12 reps of say 50 kg for 3 sets you have over all moved 1800 kilos ok??with little effort which means not much muscle fatigue..
however if you were to lower the reps to 6 instead of 12 and do 100 kilos you would still be moving over all the same amount of weight ie 1800 kilos but with much more effort (resistance) so you make the muscles work harder there for inducing more growth.
i hope you understand this its hard to explain in typing..
basically the shorter and motre expolsive the movement the more your muscles grow.
example long distance runner = skinny physique (12 reps low weight)
100 meter sprinter = muscley physique (6 reps high weight)
