Practice: The authors stated that it was unclear how the significant improvements reported in this review affected strength, balance scores, gait and activities of daily living (ADLs), as well as the impact on patients' safety (in terms of full avoidance).
Research: The authors stated that future studies should be larger, of higher quality and should differentiate clearly between experimental and control interventions and assess meaningful changes. Studies should aim to improve knowledge and understanding of the therapies and outcomes and their impact on Parkinson's disease patients, and identify optimal schedules for physical therapy. The cost effects of interventions required investigation. Further studies in very mild, more severe Parkinson's disease and Parkinson-related disorders were also warranted.