Objective: To investigate atrophy and weakness of the quadriceps femoris muscle group in patients with PFPS using measures of cross-sectional area and peak extension torque. Methods: A total of 57 ...

See how to do leg extensions with the right form and programming. A coach shows each step (and variations). … Read More >How ...

Comprised of four individual muscles (rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius), the quads ...

Objective Rectus femoris and iliopsoas contracture is a specific risk factor ... Measurement of the contracture was completed with the patient in recumbent prone position and with the quadriceps in a ...