Effects of Virtual Reality with Motor Imagery Techniques in Patients with Parkinson’s Disease: Study Protocol for a Randomized Controlled Trial

Abstract

<b><i>Background:</i></b> Parkinson’s disease (PD) is one of the most common neurological disorders, of insidious onset, with major motor symptomatology including bradykinesia, rest tremor, rigidity, and postural disturbances. Virtual reality (VR) and motor imagery (MI) are among the more innovative techniques for the rehabilitation of patients with PD which promote motor learning both through explicit and implicit processes. This study is unique in that it will examine the combined effects of VR and MI on motor function, balance and activities of daily living (ADLs) in patients with PD. <b><i>Objective:</i></b> The aim of this work is to investigate the effects of VR with MI techniques in addition to routine physical therapy on motor function, balance, and ADLs in patients with PD. <b><i>Methods:</i></b> This is a two-armed parallel design, single-blinded (assessor blinded), single-centered, randomized controlled trial, and the study protocol is based on SPIRIT guidelines. Thirty-four patients with PD (Modified Hoehn and Yahr stages I–III) will be randomly allocated with a 1:1 ratio into Group A (control group) and Group B (treatment group). Group A will be given routine physical therapy in 40-min sessions and 20 min of walking and cycling with a short period of rest, every alternate day (3 days per week) for 12 weeks, while for Group B routine physical therapy protocols along with VR and MI will be used in 60-min sessions, every alternate day (3 days per week) for 12 weeks. The primary outcome measures are as follows: (i) the Unified PD Rating Scale (UPDRS; part III), (ii) the Berg Balance Scale (BBS), and the Activities-Specific Balance Confidence Scale (ABC). The secondary outcome measure is the UPDRS (part II). Assessments will be recorded at baseline, the sixth and twelfth weeks of therapy, and 1 month after the discontinuation of therapy. <b><i>Clinical Study Registration:</i></b> This randomized controlled prospective study was registered with the Iranian Registry of clinical trials (IRCT20200221046567N1) on April 1, 2020 (https://www.irct.ir/trial/46073).