Brian Schiff, PT, DPT, OCS, CSCS, is a licensed physical therapist, respected author and fitness professional. Currently, he serves as the supervisor for Raleigh Orthopaedic Performance Center (formerly EXOS at Raleigh Orthopaedic). Brian conducts live continuing education webinars and presents nationally at professional conferences and seminars on injury prevention, rehab
and sport-specific training.
Strengthening the quadriceps in the presence of knee pain, chondromalacia or arthritis can be challenging. Often, clients cannot tolerate traditional lunges or loading due to pain in certain parts of knee flexion on descent or extension on ascent. In these cases, isometric strengthening using time under tension can be an effective alternative. This exercise is a progression from the wall sit discussed