Is it just as easy to tear a muscle doing light weight/high reps as opposed to heavy weight/low reps?
As some of you know I completely tore my pectoralis muscle in late March and had it surgically repaired May 9. My Doctor said that when I go back to lifting in August I should never do heavy weight on the bench press ever again. He said I'm more likely to retair this if I do heavy weight/low reps (>6). He recomended I do light weight/high reps (12-15) that way it has less of a chance at retairing and he said that rep scheme is good at building muscle, increasing muscular endurance, and would be good for strengthening my surgically repaired pectoralis muscle/tendon.
My question is, is my Doctor wrong? Is it just as easy to tear a muscle doing light weight/high reps as opposed to heavy weight/low reps?
One more question, can I build big strong muscles doing reps of 12-15 for all my lifts? Or do I have to go heavy (>6 reps) to acheive this?