I have done the Starr protocol three times, each time for groin/adductor pulls that happened while squatting. I'm 54 years old, and weigh 215 at 5'8" (on a good day). I did not really change anything about the protocol, but was mostly only able to do the lifts on my regular 3x/week schedule. Also, I kept doing the other lifts that were unaffected by the injury. So, I would squat using the Starr approach, then do my BP, OHP, or DL as normal. I am just now getting near my squat PR from my last adductor injury. This time around, I have also narrowed my stance a little bit, as a preventative.