Medicine Ball Plank Jack
Medicine Ball Plank Jack Exercise Description
The Medicine Ball Plank Jack is a high-plank variation that challenges trunk stability while the lower body moves. With hands on a medicine ball and feet hopping apart and together, you maintain a neutral spine and level pelvis against both extension and rotation forces. Primary emphasis is on the anterior core (rectus abdominis and transverse abdominis) and obliques, with isometric support from the shoulders, chest, and triceps. The serratus anterior assists scapular stability as you “push the ball away,” while the hip abductors/adductors engage during the foot movement. Expect a strong emphasis on whole-body tension, controlled foot landings, and steady torso alignment. Choose a firm, grippy medicine ball and a non-slip surface so the base remains stable.
- Muscle Groups: Abs, Core, Waist
- Target Muscles: Rectus Abdominis, Transversus Abdominis
- Assisting Muscles: External Obliques, Internal Obliques
- Stabilizing Muscles: Gluteus Maximus, Pectoralis Major - Sternal Head, Serratus Anterior, Triceps Brachii - Long Head
- Body Area: Upper Body
- Body Parts: Core, Torso
- Body Surface: Front
- Body Symmetry: Bilateral
- Equipment: Medicine Ball
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Core Stabilizers, Trunk Flexors
- Joint Involvement: Multi-joint
- Muscle Location: Deep Abs, Stomach
- Movement Direction: Lateral
- Muscle Position: Anterior
- Gender: Male
How To Do The Medicine Ball Plank Jack Exercise
‘- Place a firm medicine ball on a non-slip surface directly under your chest.
– Set hands on top of the ball, thumbs near each other, fingers wrapped; wrists neutral.
– Stack shoulders over the ball, arms straight with soft elbows; press the ball “down and away.”
– Step back to a high plank: feet together, body in one line from head to heels.
– Brace your abdominal wall, ribs down, squeeze glutes; keep pelvis level and spine neutral.
– Keep shoulder blades stable (light protraction), neck long, gaze just ahead of the ball.
– Hop both feet out to hip–shoulder width; land softly on the balls of your feet without letting hips drop or pike.
– Hop feet back together under control, minimizing torso sway.
– Breathe steadily; if the ball wobbles or alignment breaks, pause, reset, and continue.
– To finish, step feet in, lower knees carefully, and come off the ball.
Medicine Ball Plank Jack Tips
‘- Use a firm, grippy medicine ball on a non-slip surface so your base stays stable.
– Place the ball directly under your chest and stack your shoulders over it before stepping back.
– Wrap your fingers around the ball with thumbs near each other and keep wrists neutral.
– Press the ball “down and away” to engage the serratus anterior and help stabilize your shoulders.
– Form a straight line from head to heels, bracing your abs, ribs down, glutes squeezed, pelvis level, and spine neutral.
– Keep shoulder blades lightly protracted, neck long, and gaze just ahead of the ball to steady your torso.
– Hop feet out to hip–shoulder width and land softly on the balls of your feet without letting your hips drop or pike.
– Hop feet back together under control, minimizing torso sway to maintain trunk stability.
– Breathe steadily, and if the ball wobbles or your alignment breaks, pause, reset your position, and then continue.
– To finish, step your feet in first, then lower your knees carefully before coming off the ball.
Medicine Ball Plank Jack Beginner Introduction
The Medicine Ball Plank Jack is a dynamic plank variation that blends core stability with quick lower-body movement. The upper body balances on a medicine ball in a straight-arm plank while the legs hop apart and back together, turning a classic core position into a more athletic, rhythm-based drill. Because the hands rest on an unstable surface, the midsection works hard to prevent the body from arching or twisting as the feet move in and out.
This exercise highlights the front abs, deep core, and side abs, with strong support from the shoulders, chest, and triceps as they press into the ball. The muscles around the rib cage and shoulder blades contribute to a solid upper-body base, while the outer hips and inner thighs assist with the jumping motion. The movement centers on steadiness through the torso, firm pressure into the ball, and soft, controlled landings through the feet, creating a challenging total-body effort that emphasizes alignment and control under motion.