Fast as fuck reps, no slow eccentric 6 - 8 repsConstant tension medium speed 10 repsFast as fuck concentric But slow eccentric 6 - 8 reps Everyone post amounts of reps But what about speed to produce muscle gains
I've read in more than one scientific study that it is the eccentric portion that is mainly responsible for hypertrophy of muscle. I have also read in more than one scientific study that moving the weight as fast as possible in the concentric portion utilizes the most muscle fibres.So the "Fast as fuck concentric But slow eccentric" option would seem to be the best for muscle mass based on what I've read."Fast as fuck" is relative also, If you are lifting a really heavy weight as fast as possible, it could appear to be going very slowly from any other persons perspective. But is is still "fast as fuck" for you and recruiting the most muscle fibres.
One thing is for sure, no one ever built a huge physique by doing super slow movement. Don't over think, just lift.