Anterior Oblique Subsystem (AOS)

This course describes the anterior oblique subsystem (AOS), a concept originally proposed by Vleeming et al. (1). However, similar concepts have also been proposed, such as the anterior oblique sling, anterior oblique myofascial synergy, myofascial lines, anatomy trains, myofascial meridians, superficial front line, functional line, spiral line, and the serape effect.

The Anterior Oblique Subsystem (AOS) is comprised of:

• Rectus abdominis and pyramidalis
• Abdominal Fascia (Anterior layer)
• External Obliques
• Anterior Adductors
  • Potentially
    • Pectoralis Major
    • Serratus Anterior

Function (Brief):

• Concentric Function: Pushing, rotation "inward," and multi-segmental flexion
• Isometric Function: Transfer of force between lower and upper extremities and stabilization of the hips, sacroiliac joint, pubic symphysis, lumbar spine, and thoracic spine.
• Eccentric Function: Decelerate pushing, rotation "outward," and multi-segmental extension.

Practical Application

• Core
  • Static Chop and Progression
  • Planks and Progressions
• Integrated Exercise
  • Legs with Push

Common Maladaptive Behavior

• Over-active

The concepts and techniques described in this course may be particularly beneficial for neuromuscular re-education, coordination, motor pattern integration, whole-body strength, functional strength, and sports performance. Sports medicine professionals (personal trainers, fitness instructors, physical therapists, massage therapists, chiropractors, occupational therapists, athletic trainers, etc.) should consider adding these exercises to their repertoire to improve the outcomes of their integrated exercise programs, sports performance programs, and therapeutic (rehabilitation) interventions.

Pre-approved for Continuing Education Credits for:

• Athletic Trainers
• Chiropractors
• Group Exercise Instructors
• Massage Therapists
• Occupational Therapists - Intermediate
• Personal Trainers
• Physical Therapists
• Physical Therapy Assistants
• Yoga Instructors

This Course Includes:

• AI Tutor
• Study Guide
• Text and Illustrations
• Research Review
• Technique Videos
• Sample Routine
• Practice Exam
• Pre-approved Final Exam

Additional Subsystem Courses

• Intrinsic Stabilization Subsystem (ISS)
• Posterior Oblique Subsystem (POS)
• Deep Longitudinal Subsystem (DLS)

Caption: Anterior oblique subsystem (AOS): rectus abdominis, abdominal fascia (anterior layer), external obliques, and anterior adductors. Illustration from Vleeming et al. (2007) (1).