Side Plank With Bosu Ball

A destabilized side plank variation using a Bosu to increase proprioception, shoulder control, and anti-lateral-flexion strength.

Muscles Targeted

Obliques, quadratus lumborum, serratus anterior, scapular stabilizers, glute med/min.

Key Benefits

  • Improves lateral core endurance under instability
  • Builds shoulder and scapular control
  • Improves balance and proprioception
  • Great progression once standard side planks are solid
Keep your elbow stacked under your shoulder and your ribs down—no sagging.

Equipment Needed

Bosu ball and open space.

How to Perform Side Plank With Bosu Ball

  1. Place your forearm on the Bosu dome (or flip it for a harder setup if appropriate).
  2. Set up in a side plank with feet stacked.
  3. Lift hips into a straight line from head to ankles.
  4. Hold steady while the Bosu challenges small balance corrections.
  5. Switch sides and repeat.

Programming Options

  • 15–40 second holds
  • 2–4 sets per side
  • Option: add a small reach or top-leg lift as a progression

Why This Variation Works

The unstable surface increases the demand on the shoulder and trunk to maintain alignment without compensating through spinal motion.

When to Use It

Core circuits, balance training, and late-stage rehab—especially when you want lateral strength plus proprioception.

Frequently Asked Questions

Is dome-up or dome-down harder?

Typically dome-down is harder because the surface is less stable. Use the version you can control.

My wrist/elbow feels irritated—what can I do?

Use a mat/towel for padding, shorten the hold, or return to the floor version temporarily.

Should my feet be stacked or staggered?

Stacked is harder. Staggering the feet widens your base and makes it more manageable.