Adarq.org

Because there's a loss of stretch reflex when you're too flexible - you don't benefit from it anymore. If you're still explosive it's because you're strong, not because you still benefit from the stretch reflex at the level of people that aren't as flexible as you. But this applies in something like ballet or whatever.

Maybe Raptor knows something that we don't, but he needs to explain it in his post, not just take his opinion/theory and write it out as fact. The muscle spindles, which are responsible for activating the stretch shortening cycle, respond to both changes in muscle length AND the rate/speed of change in length. Regardless of how flexible you are statically, I would think it would still kick in during a rapid eccentric contraction. Like in a depth jump, your knees don't bend much to stretch the quadriceps, it's the rate/speed of that stretch that causes the reflex.

By the way - forget what I write around here, I'm not in the right mental state to think about anything. Sorry about that.