drtbear1967
Musclechemistry Board Certified Member
The quadriceps are four powerful muscles which include: the rectus femoris, the vastus lateralis, the vastus medialis, and the vastus intermedius. The three vastus muscles originate (begin/attach) to the upper part of the femur or thigh bone and cross the knee joint. This means their main job is to extend the knee as occurs in leg extensions and squats.
The Rectus femoris crosses the hip joint and attaches to the front of the hip (inferior iliac spine) and also crosses the knee joint. This means they have two functions: (1) to extend the knee and (2) to lift your knee up towards your body (hip flexion). This means you can target the rectus femoris by doing hanging leg raises as well as lunges!
The Rectus femoris crosses the hip joint and attaches to the front of the hip (inferior iliac spine) and also crosses the knee joint. This means they have two functions: (1) to extend the knee and (2) to lift your knee up towards your body (hip flexion). This means you can target the rectus femoris by doing hanging leg raises as well as lunges!
