I believe that when discussing “overuse injuries” that you are more likely to injure yourself if you are doing an exercise that limits your range of motion! When your range of motion is decreased and you continue the exercise then the area with the limited “movement capabilities” has much more pressure because it can’t move very much! There are different things that this can happen to but one is some “machines!” So if it is a machine that limits “movement” then I would think that one should not do excessive amounts of repetitions! “The” Trainer/Inside Out Fitness