That trainer is full of shit.
Quote:
The "high rep" training [around 15 reps] is only there to prepare joints and tendons for future heavy loading [3-8 reps]. Flushing tissue with lactate stimulates angiogenesis and stimulates tendon growth. (Hunt TK, Hussain MZ. Can wound healing be a paradigm for tissue repair? Med Sci Sports Exerc. 1994 Jun;26(6):755-8.) The 15s are designed simply to flush all tissues and joints (as far as possible) with lactate to encourage angeogenesis for blood flow and tendon growth to better endure subsequent heavy loads
- Bryan Haycock
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That's the science you should print up and show him so he doesn't continue to think that way for the good of all mankind.
Now, you
can see some gains off of those high reps, but NO, they are not optimal for maximal growth. Collectively, I'd say 5-10 reps with no more than 12.
Remember that a "good burn" doesn't cause growth any more than feeling sore does (DOMS). Both are pretty popular myths though. IMO, I think it's a good idea every once in a while after heavy bouts of lifting in the 5-8 range to step back to a week or two of 15 reps to help alleviate your joints/tendons of that stress.
Alot of personal trainer's don't know a whole lot about heavy weightlifting. Most of them specialize in health and fitness. Disclaimer: I did say alot, not all. Two trainer's at my gym are shit hot and huge (naturally) while the rest spend the majority of their time on cable crossovers and dumbbell kickbacks
There was one on this website that swore that CEE was nothing more than a longer name for dicreatine malate :eek: . The only way I could convince him after he started arguing with me was to provide definitions and a long list of research he could look up on his own. Christ!