dr. mel siff stated in his " facts and fallacies of fitness" that any rep volume can do any one of the same end results depending on a number of training and physical factors. so when a trainer tells you will have to do x amount of reps ...For purchasing details and more information on Supertraining by Dr Mel Siff please click here
For more information on Facts and Fallacies of Fitness by Dr Mel Siff please click here