
REPS OVER 5 DO PRODUCE HYPERTROPHY , I i NEVER SAID THEY DIDNT!!!! IN THIS LIFT YOU CAN RULE OUT DOING HIGHER REPS, IT ISNT LIKE DOING CURLS. YOUARE USING MAJOR MUSCLES GROUPS AND HAVE A GREATER CHANCE OF INJURY WITH HIGHER REPS. you can gain plenty of size using reps of 5-6 REPS in this particular lift with multiple set. hey you know what smart ass, KEEP DOING multiple sets of 10's in the lift, AND KEEP GOING HEAVY and lets see how quick you can herniate a disc or have a severe lumbar sprain /strain!
you said it yourself in you post, lower reps are great for mass, and in case you didnt know, hypertrophy adds mass, so realy you just reinforced the point i was trying to make!!!!
if you MUST use higher reps, dont choose this exercise for back and hamstrings, do lighter good mornings, light SLDL's, roman chair, leg curls, glute ham raises or reverse hypers.
doing the deadlift for set of 10's or 15's is just as bad of an idea as trying to do olympic lifts like the clean and jerk and snatch for reps of 10's to 15's. it is an accident waiting to happen