Intelligently Controlled Assistive Rehabilitation Elliptical (ICARE) Training: An Analysis of Lower Extremity Electromyographic (EMG) Demands with Varying Levels of Motor Assistance

A powered elliptical  trainer.
The research article here:
http://web.resna.org/library/conference_2010/JEA/BurnfieldJ.html
A newspaper article with a survivor user here:
http://journalstar.com/lifestyles/health-med-fit/health/madonna-rehab-walking-device-to-be-sold-nationally/article_80feefcd-1b8b-5551-abd1-8aef958be0f7.html