On What is already known on this topic: Parkinson’s disease causes tremor and reduces mobility and functional performance. People with Parkinson’s disease Selleck SB431542 also have reduced strength compared to age-matched controls. Progressive resistance exercise improves strength but it is unclear how large this effect is and whether functional performance is also improved. What this study

adds: Progressive resistance exercise has a moderate effect on strength in people with Parkinson’s disease. Some measures of mobility and functional performance also improve, including walking capacity and sit-to-stand time. However, this evidence is derived mainly from trials involving people with Parkinson’s disease of mild or moderate severity. Recent reviews established a rationale for the use of resistance training and highlight findings related to positive effects of progressive selleck chemical resistance

exercise in people with Parkinson’s disease. However, meta-analysis was not performed, limiting the conclusions about these effects in such patients (Falvo et al 2008, David et al 2012). Progressive resistance exercise will only be widely implemented in clinical practice as a therapy for Parkinson’s disease if it is found to be effective and worthwhile in terms of improvements in physical performance. Therefore, the research questions of this systematic review were: 1. Does progressive resistance exercise Mephenoxalone increase muscle strength in people with Parkinson’s disease? Searches of CINAHL (1982 to November 2011), PEDro (to November 2011), LILACS (to November 2011), and MEDLINE databases were conducted without language restrictions. Searches were performed using terms recommended by the Cochrane Collaboration related to Parkinson’s disease and randomised

or quasi-randomised controlled trials and words related to progressive resistance training (see Appendix 1, available on the eAddenda). Titles and abstracts (where available) were displayed and screened by a single reviewer to identify potentially relevant trials. Full text copies of potentially relevant trials were retrieved and their reference lists were screened. The retrieved papers were assessed for eligibility by two independent researchers blinded to authors, journal, and outcomes, using predetermined criteria (Box 1). Disagreements were resolved by discussion with a third reviewer. Research design • Randomised controlled trial, or quasi-randomised controlled trial Participants • Patients with Parkinson’s disease (any level of severity – Hoehn & Yahr) Interventions • Progressive resistance exercise Outcomes • Measure of muscle strength (voluntary force production) Comparisons • Progressive resistance exercise versus no intervention/placebo Quality: The quality of included trials was assessed by extracting scores from the Physiotherapy Evidence Database (PEDro) website.

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