Rhythmic auditory cueing in atypical parkinsonism: A pilot study

Area of Science:

• Neuroscience
• Movement Disorders
• Rehabilitation Technology

Background:

• Rhythmic auditory cueing (RAC) is known to improve gait in Parkinson's disease and stroke.
• Research on RAC's effects in atypical parkinsonian disorders (APD) is limited.
• APD encompasses conditions like Progressive Supranuclear Palsy (PSP), Corticobasal Syndrome (CBS), Multiple System Atrophy (MSA), and Dementia with Lewy Bodies (DLB).

Purpose of the Study:

• To investigate the immediate effects of RAC on gait parameters in patients with clinically diagnosed APD.
• To assess potential carryover effects of RAC on gait post-intervention.

Main Methods:

• 46 APD participants (PSP, CBS, MSA, DLB) walked for 2 minutes without RAC (baseline).
• Participants then walked with RAC using a smartphone metronome at 10% faster than baseline cadence.
• Gait parameters (cadence, velocity, stride length) were measured at baseline, during RAC, and post-RAC.

Main Results:

• Significant improvements in cadence were observed from baseline to during and post-RAC (corrected p=0.009).
• Gait velocity showed improvement during and post-RAC, though not statistically significant after multiple comparison correction.
• Improvements were most pronounced in PSP participants; exploratory analysis indicated significant cadence improvement in the TAU group (PSP+CBS).

Conclusions:

• Short-term RAC demonstrated improvements in cadence and gait velocity in APD patients.
• RAC presents a practical and potentially effective intervention for improving gait patterns in APD.
• Further research is needed to establish RAC as a rehabilitation modality for APD.