1 Activation of Supraspinatus and Infraspinatus Partitions and Periscapular Musculature during Rehabilitative Elastic Resistance Exercises Ranjit Joseph, MSc, 1 Talia Alenabi, MD, PhD, 1 Tea Lulic, MSc, 1 Clark R. Dickerson, PhD 1 1 Department of Kinesiology, University of Waterloo, Waterloo, Canada *Corresponding Author: Clark R. Dickerson Department of Kinesiology University of Waterloo 200 University Avenue West Waterloo, ON N2L 3G1 Canada clark.dickerson@uwaterloo.ca Authors Disclosure The authors have no conflict of interest to disclose. The study was approved by Ontario Research Ethic Review Board. The work was supported by an NSERC Discovery Grant and from combined support from the Canada Foundation for Innovation and Ontario Research Fund. These findings were presented as a podium presentation at Ontario Biomechanics Conference 2018. American Journal of Physical Medicine & Rehabilitation Articles Ahead of Print DOI: 10.1097/PHM.0000000000001116 Copyright © 2018 Wolters Kluwer Health, Inc. Unauthorized reproduction of this article is prohibited. ACCEPTED