The Effects of Strength Training on Physical Function, Motor Symptoms, and Quality of Life in Parkinson’s Disease Patients: A Systematic Review

Abstract

Exercise is a fundamental non-pharmacological treatment for Parkinson’s Disease (PD). This systematic review evaluates the effect of strength training on physical function, quality of life, and motor symptoms in this population. A search was conducted in the three databases, following the PICOD method. The eligibility criteria required are individuals with PD at stages 1–3 on the modified Hoehn and Yahr scale, interventions with strength exercises, outcome measures for quality of life, physical function, and motor and non-motor symptoms of PD. A total of 1322 studies were found, and nine studies were included, with a total sample of 327 indi- viduals aged between 58.6 ± 5.6 years and 75.7 ± 7.2 years; the period of strength training interventions ranged from 7 weeks to 24 months, with sessions held two or more times per week. Tests for balance, strength, mobility, and speed, as well as questionnaires and scales measuring the quality of life, depression, and motor symptoms, were performed. Significant differences in quality-of-life variables and PD symptoms were observed in 5 studies in the analysis between groups (interven- tion and control) after the intervention. This study concluded that strength training improves physical functions, enhances quality of life, and alleviates motor and non- motor symptoms in PD. PROSPERO number (CRD42023470224).