Strength and Singles
"The need for single attempts as a training medium cannot be overlooked because they teach you, just as the power rack teaches you, to fight against heavy weight. And this is a requirement for continued success in any strength. Some may argue that all that is necessary is medium heavy resistance and the strength will come whether you perform singles or not, but I beg to differ. What happens in most of those cases is that the lifter becomes proficient at performing many sets of three and five reps with a medium heavy weight and he also gains in muscle size and density from the work but his limit single and double attempts do not come to par with his repetition capabilities. It is far easier to learn to do more repetitions with a given weight than it is to lift a heavier weight for the same number of repetitions. This is where we have so many guys falling by the wayside. They can squat maybe four hundred for fine repetitions and fail with four fifty for a single! This is almost assuredly caused by training with many sets of low repetitions but very little single repetition work being done."
My own training experience bears out this statement, as I train almost exclusively with singles and find that my maximum poundage is far above what I can do for lots of reps.
Form follows function.