Added forearm weights for gait pattern normalization in patients with Parkinson's disease

Area of Science:

• Neurology
• Biomechanics
• Movement Disorders

Background:

• Parkinson's Disease (PD) frequently causes gait impairment.
• Altering sensory input is a potential strategy to improve PD gait.
• Forearm loading may enhance proprioception and motor control.

Purpose of the Study:

• To investigate if adding forearm weights improves gait in Parkinson's Disease patients.
• To determine if gait improvements correlate with specific PD clinical characteristics.
• To compare gait parameters between PD patients with and without forearm weights against healthy controls.

Main Methods:

• Thirty Parkinson's Disease patients and 30 controls underwent 3D motion capture.
• Spatiotemporal and kinematic gait parameters were assessed during normal walking and walking with forearm weights.
• Statistical analyses included t-tests, non-parametric tests, statistical parametric mapping, and Pearson's correlation.

Main Results:

• PD patients exhibited impaired gait compared to controls during normal walking.
• Forearm weights significantly improved cadence, speed, step length, and stride time in PD patients.
• Gait parameters with forearm loading approached those of healthy controls.
• Improvements correlated with axial and tremor severity, and inversely with rigidity.
• Tremor-dominant PD subtypes showed greater improvements than postural instability/gait difficulty subtypes.

Conclusions:

• Bilateral forearm loading can normalize gait patterns in Parkinson's Disease.
• The degree of gait improvement is associated with specific clinical features of PD.
• This non-invasive intervention offers a promising approach for managing gait disturbances in PD.