Parkinson's Disease and Voluntary Walking Interventions-A Systematic Review and Meta-analysis.

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ObjectiveThe primary objective was to quantify the effect of interventions involving voluntary walking on gait function (ie, velocity, distance, step length, stride length, and cadence) in people with Parkinson's disease (pwPD) compared with non-active or active controls. A secondary objective was to quantify the effect of voluntary walking interventions on functional mobility, disease severity, and health-related quality of life.Data sourcesPubMed and EMBASE were searched for relevant studies.Study selectionEligibility criteria were as follows: (1) randomized controlled trials (RCTs) or pilot RCTs; (2) participants diagnosed with Parkinson's disease (PD); (3) evaluation of any voluntary structured walking intervention (>3wk and/or >6 training sessions); and (4) pre- and postintervention walking assessments.Data extractionPost mean data of short and long walking tests, timed Up and Go (TUG) test, Movement Disorder Society-sponsored revision of the Unified Parkinson's Disease Rating Scale III (MDS-UPDRS III), and Parkinson's Disease Questionnaire-39 were extracted and analyzed.Data synthesisFifteen studies (11 RCTs, 4 pilot RCTs) were included covering 590 pwPD (mean age 65.7±7.5y; 208 women). Meta-analyses showed positive effects of voluntary walking on gait speed (ie, short walking tests, standardized mean difference [SMD]=0.59 [0.26-0.93]), gait distance (ie, long walking tests, SMD=0.83 [0.55-1.10]), step length (SMD=0.72 [0.35-1.10]), stride length (SMD=0.57 [0.07-1.07]), MDS-UPDRS III (SMD=-0.39 [-0.62 to -0.16]), and TUG (SMD=-0.38 [-0.73 to -0.04]).ConclusionVoluntary walking interventions improved gait and mobility and lowered disease severity in pwPD. These results support the use of voluntary walking in PD rehabilitation.

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