Muscles of the Core

To start off the series of “Tight Tuesday” posts, I would like to begin with a post about basic core musculature anatomy…

There are three parts of our core: Local Stabilization SystemGlobal Stabilization System, and Movement System

Local Stabilization System

  • Muscles attach directly to the vertebrae 
  • Primarily responsible for intervertebral and intersegmental stability, providing support from vertebra to vertebra
  • Limits excessive compressive and rotational forces between spinal segments
  • Aids in proprioception and postural control
  • Consists of: Transverse AbdominisInternal ObliqueLumbar MultifidisPelvic floor musclesDiaphragm

Global Stabilization System

  • Muscles attach from the pelvis to the spine
  • Transfers loads between the upper extremities (arms) and lower extremities (legs)
  • Provides stability between the pelvis and spine
  • Provides stabilization and eccentric control of the core during functional movements
  • Consists of:  Quadratus LumborumPsoas MajorExternal ObliqueParts of Internal ObliqueRectus AbdominisGluteus MediusAdductor complex

Movement System

  • Muscles attach the spine and/or pelvis to the extremities (arms and legs)
  • Primarily responsible for concentric force production (shortening of muscle) and eccentric deceleration (lengthening of muscle) during dynamic activities
  • Consists of:  Latissimus DorsiHip FlexorsHamstring complexQuadriceps


* Stay tuned for next Tuesday’s post, featuring the Drawing-In Maneuver and Bracing… Important stuff!

About rrluthi

Certified fitness expert with a passion for educating and empowering people of all ages (young "kiddos" to the active aging "baby boomers") about the benefits of adopting and maintaining an active, healthy lifestyle, preventing injury, and feeling good. Proven strengths applying cutting-edge fitness/wellness concepts and research through roles as a health coach, fitness trainer, group exercise instructor, and rehabilitation aide—in addition to promoting these concepts in a more systematic way through blogging and social media, community outreach, and corporate wellness program facilitation.
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