For example on squats, you're doing 75 heavy reps per week, that's a pretty decent amount of volume. (fitnessandpower.com)
As much as we'd like to maintain the ideal breathing pattern, it's just not possible when you're performing heavy reps and sets. (howtobuildmuscless.com)
But just like any muscle group you train, if you do heavy rep ranges your abs are going to grow. (justinkavanaghfitness.com)