o The right and the wrong way
Planks and Plank Progressions
Article: Journal of Bodywork and Movement Therapies. Core stability and the unstable platform device. Wayne Haynes, DC, DO. 8. 2004 . 88–103.
Article: Arch Phys Med Rehabil. Core Stability Exercises On and Off a Swiss Ball. Paul W. Marshall, PG Dip Sci, Bernadette A. Murphy, PhD. Vol 86. February 2005. 242 – 249.
Article: Arch Phys Med Rehabil. FOCUSED REVIEW Core Strengthening. Venu Akuthota, MD, Scott F. Nadler, DO. Vol 85, Suppl 1. March 2004. S86 – S92.
Article: Advanced News Magazine. Pilates Provides Effective Rehabilitation for Both Body and Mind. Daniel Wilson. August 2005.