Why is eccentric strength so important in prevention of an injury? ADVERTISEMENT 333 viewsJune 18, 2012 0 Chris0 June 18, 2012 0 Comments 2 Answers ActiveVotedNewestOldest 0 Chris0 Posted 0 Comments Eccentric strength per the research and continuing evidenced based recruits type II fast twitch fibers aka strength fibers. We lose fast twitch fibers after age 30 and is replaced by slow twitch or type I fibers. You are viewing 1 out of 2 answers, click here to view all answers. Register or Login