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Anatomy

Lumbar Spine

The five vertebrae of the lower back that bear most of the body's weight and provide stability during lifting.

The lumbar spine (L1-L5) is built for stability rather than mobility, supporting the trunk during heavy loads. Maintaining a neutral lumbar position during exercises like squats and deadlifts is critical for safety. Excessive flexion (rounding) under load is a common injury mechanism. Core bracing, proper hip hinge mechanics, and appropriate load selection are key strategies for protecting the lumbar spine during resistance training. The NHS recommends strengthening core muscles to support lower back health.

Examples

  • Neutral spine maintained during deadlifts
  • Core bracing to protect L-spine under load
  • McGill big three exercises for lumbar stability

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