Fysiqal
Balance
Balance

Stability-Ball Dead Bug

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core-stabilityanti-extensionstability-balldead-bugunstable-surfaceneuromotor

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Exercise demo
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A dead bug performed pressing a stability ball between the opposite hand and knee — the ball adds an active "press" and instability that raises the anti-extension core demand.

Detail

Lie supine in the dead-bug start (hips/knees at 90°, arms up). Hold a stability ball (Balance Training Tools (Pad, BOSU, Wobble Board, Stability Ball)) so it is pressed between your hands and your knees/shins. Brace and flatten the low back to the floor (Abdominal Bracing (vs Hollowing)). Lower one arm and the opposite leg toward the floor while keeping the ball pinned by the other hand and knee — maintaining a constant press into the ball — then return and alternate. The press keeps tension high and the rolling ball adds instability, so the trunk must work harder to resist lumbar extension (see Anti-Movement Core Training (Anti-Extension, Anti-Rotation, Anti-Lateral-Flexion)).

This is a progression of the floor dead bug (Dead Bug); the active limb press recruits more deep core (Transverse Abdominis) and the unstable ball demands extra stabilization.

Coaching:

  • Keep the low back flat throughout — the standard fault is arching as a limb lowers; shorten the reach if it lifts.
  • Maintain a firm, constant press into the ball with the supporting hand/knee.
  • Move slowly; exhale as the limbs extend.

Progressions: lower the limbs farther / straighter → slow tempo or add holds → reduce the ball size (smaller = harder press control). Regression: return to the floor dead bug (Dead Bug) or move one limb at a time.

Key facts

  • Supine dead bug while pressing a stability ball between the opposite hand and knee.
  • The press + rolling ball increase anti-extension core demand and deep-core recruitment.
  • A progression of the floor dead bug; keep the low back flat throughout.
  • Progress via range/tempo/holds; regress to floor dead bug.

Sources

Cited in text — not yet linked
Authored from established core-stability progression consensus.

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Atlas Connections

Transverse Abdominis
The deepest abdominal muscle; compresses the abdomen, supports the abdominal contents, and aids lower-back stability.
Anti-Movement Core Training (Anti-Extension, Anti-Rotation, Anti-Lateral-Flexion)Closely related
Train the core by resisting motion the limbs or a load try to impose — anti-extension, anti-rotation, and anti-lateral-flexion — rather than by repeatedly flexing the spine.
Balance Training Tools (Pad, BOSU, Wobble Board, Stability Ball)Closely related
A graded toolkit of unstable surfaces — from a mildly compliant foam pad to a tilting wobble board — each adding a known amount of instability to balance and core drills.
Abdominal Bracing (vs Hollowing)Closely related
Stiffening the whole trunk wall — like bracing for a punch — to lock the spine in neutral and create a rigid base for the limbs to work from; the foundational core-stability skill.
Core Stability vs Core StrengthClosely related
Core strength is how much force the trunk muscles can produce; core stability is the trunk's ability to resist unwanted motion and keep the spine controlled — and for back health and force transfer, stability usually matters more.
Dead BugClosely related
Lie on your back and lower an opposite arm and leg while pinning the low back to the floor — a beginner-friendly anti-extension core-stability drill and the supine partner to the bird-dog.