Wall Ball Sit

WALL BALL SIT
The wall ball sit exercise is used to isometrically strengthen the hips and knees. Start by placing a Swiss ball or stability ball against a wall and placed on your mid back. Keep a neutral spine and use the ball to support the back as you lean against it. Squat down until your hips and knees flexed to 90 degrees. Keep the core braced. You may hold a weight with your hands for added resistance. Depending on your goals, hold this contraction for 10-30 seconds. Rest for an equal interview and repeat if needed.
Muscles involved:
Quadriceps
Vastus medialis
Vastus intermedius
Vastus lateralis
Rectus femoris
Gluteus Maximus
Related conditions:
Runner’s knee / Jumper’s knee
Patellofemoral pain syndrome
Meniscus tear
ACL sprain
MCL sprain
Patellar tendinitis
Quadriceps tendinitis
Quadriceps strain
Pes anserine bursitis