high reps are a part of my Training year round. since i past my mid 40´s (i´m close to 49 now) i recognized that training heavy all the time lead in the end to serious injury (i had 2 serious injuries in the past, 11 + 4 years ago, Training + 32 years).
I alternate my routines, still doing a relative heavy workout, but only using the exercises i had a good feeling and controll with high weights. next time i train the same muscle again i use reps in the 10-15 range, and the next time i train the same muscles i go "all out" with high reps. In my heavy workouts (for example) i still can go up for 4-6 reps with 180-190 lbs. dumbells in the incline dumbell press. On "my light" training day i use 115 lbs. Dumbells for 30-35 reps. So my tendoms, ligaments have a break from heavy loads for 10 Days. Training the whole body every 4-6 days (3 Trainings in 4, 5 or 6 days, 4 Days for the light weights cycle, 5 days for the medium heavy cycle, 6 days for the heavy cycle).