Rehabilitation is a key component in the management of Parkinson's disease (PD). In the past decade, there has been a virtual explosion of literature regarding the effects of physical activity on PD following animal studies that suggested that exercise may have a neuroprotective effect. However, relative to other approaches such as pharmacological and neurosurgical management, the evidence regarding the effects of exercise on PD is less well developed. Critical questions remain about the relative effectiveness of different interventions, the critical components of the interventions, the optimal timing, intensity and dosage of interventions, and the effect interventions have on particular motor and nonmotor symptoms, physical function, quality of life, participation, disability, and disease progression. We invite investigators to contribute original research articles as well as review articles that will stimulate the continuing efforts to understand the role of rehabilitation and exercise in the management of PD, the development of rehabilitative interventions for individuals with PD, and the evaluation of outcomes. Potential topics include, but are not limited to:

• Roles of physical, occupational, and speech therapy, as well as other disciplines
• Development and/or evaluation of outcome measures
• Clinical trials of rehabilitation in PD, including methodology papers outlining study designs
• Investigations of underlying mechanisms
• Human and animal studies with clinical relevance (e.g., examining effects of physical exercise)
• Studies of the efficacy and /or effectiveness of rehabilitation on motor and /or nonmotor symptoms of PD, activities of daily living, quality of life, physical function, participation, or other aspects of PD-related disability
• Utilization of rehabilitative services by individuals with PD
• Attitudes toward exercise in the PD community

Articles published in this special issue will not be subject to the journal's Article Processing Charges.

Before submission authors should carefully read over the journal's Author Guidelines, which are located at http://www.hindawi.com/journals/pd/guidelines/. Prospective authors should submit an electronic copy of their complete manuscript through the journal Manuscript Tracking System at http://mts.hindawi.com/ according to the following timetable: