Illustration demonstrating the position of the Supine Skull Crusher (HSR) exercise.

Therapeutic exercise

Supine Skull Crusher (HSR)

StrengthenAdvanced

Heavy slow loading for the triceps brachii in an HSR (Heavy Slow Resistance) pattern, following Kongsgaard's protocol. The final phase of triceps tendinopathy rehabilitation, when the patient already tolerates controlled eccentric loading and needs greater cumulative load.

How to perform

  1. Starting position. Lie on a flat bench with a moderate dumbbell (4–8 kg) in each hand and the arms extended toward the ceiling.
  2. Step 2. Keeping the elbows still and pointing upward (perpendicular to the floor), flex only the elbows, lowering the dumbbells toward the forehead, over 3–4 seconds.
  3. Step 3. Stop the dumbbells 5 cm from the forehead and hold for 1 second.
  4. Step 4. Extend the elbows over 2 seconds, returning to the starting position without locking out completely (maintains continuous tension on the triceps).
  5. Return. Keep the movement slow and controlled — never use momentum or acceleration.

When not to perform

  • Partial or complete triceps tendon rupture
  • Tendinopathy in an acute reactive phase
  • Olecranon bursitis
  • Recent elbow surgery
  • Acute rotator-cuff injury (positioning with arms over the body)
  • Decompensated cardiovascular disease (progressive load with cardiovascular demand)

Medical disclaimer. These exercises are presented for informational purposes only. Always consult your physician before starting any exercise program, especially in case of acute pain, recent injury, or underlying clinical condition.

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