Nurmom is correct.
For classic BB'ing it's never about the weight, but how much blood is brought into a muscle. Moderate weight (even light baby weights considered by some), higher reps and more sets at a faster pace. All equal volume and the goal of increased muscle size. Basic idea being, that strength will increase as muscle size increases. ...strength will follow size.Though, in the real training world, not always true.
For power BB'ing, more weight, lower reps and fewer sets. With more rest between sets. The goal is developing strength and muscle mass. The basic theory being that more weight used in exercises, the larger muscle size is developed....muscle size will follow strength advances. Though again, in the real training world, not always true.
Got to explore what works best for you...usually some where in the middle. 20 reps will do for you what 5 reps won't and 5 reps will do for you what 20 reps won't. Take your pick, it's your body to experiment on.
Higher reps, for the most part, seem to give better results to the larger muscle structures, like legs and back. Speaking of squats and DL's here. BB Hack squats also fit in well here, thinking of it as a form of a reverse DL and hitting the legs better.
In this regard, 20 rep(or above) breathing squats are one of the better and faster ways to develop muscle size and strength in training. Higher reps breathing squats are a form of the rest/pause system of training. Just a personal opinion..but a true mass builder for a lot of guys over the years (me included).
Good Luck.
