title: Invited commentary.
authors.affiliation: Department of Applied Physiology and Kinesiology, Motor Behavior Laboratory, Center for Exercise Science, University of Florida, Gainesville, FL 32611, USA. cauraugh@hhp.ufl.edu
authors.forename: James H
authors.initials: JH
authors.lastname: Cauraugh
authors.forename: Jeffery J
authors.initials: JJ
authors.lastname: Summers
mesh_terms: D000368:Aged; D001132:Arm / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D026741:Physical Therapy Modalities; D020521:Stroke / Q000503:physiopathology; D000071939:Stroke Rehabilitation; D016896:Treatment Outcome