Characteristics of the included studies.

Notes: UPDRS III, Unified Parkinson's Disease Rating Scale Part III; TUG, Timed Up and Go test; PDQ-39/8, Parkinson's Disease Questionnaire-39/8; PDQ-39SI, PDQ-39 Summary Index; BBS, Berg Balance Scale; FRT, Functional reach test; TS, Tandem stance test; OLS, One-leg stance test; FAP, Functional ambulation profile; SMW, Six minute walk; PPS, Post-program survey; DSB-WMS, Digit Span Backward Subtest from Wechsler Memory Scale; LVF, Letter Verbal Fluency; CVF, Category Verbal Fluency; SCWT, Stroop Color Word Test; Trail A–B, Trails A and B; Tinetti's FE, Tinetti's Falls Efficacy Scale; RTLS, reaction time upon light signal; VPS, Vitality Plus Scale; UPDRS-ME, Modified Unified Parkinson's Disease Rating Scale Motor Examination.