This study will test whether combining an anterior foot wedge with neuromuscular training can improve balance, gait, and muscle activity in people with Parkinson's disease. Thirty patients (ages 45-75) with moderate Parkinson's (Hoehn \& Yahr Stage III) will be randomly assigned to one of two groups: Group 1 (Control): Receives a standard physical therapy program including stretching, strengthening, PNF, weight-shifting, and gait training. Group 2 (Experimental): Receives the same physical therapy plus neuromuscular training using the Biodex Multi-Joint System and a custom anterior foot wedge. All participants will train for 60 minutes, three times per week, for 8 weeks. Before and after the program, researchers will measure: balance (using the Biodex Balance System), gait (via Unified Parkinson's Disease Rating Scale and motion analysis), and muscle activity in the trunk (using electromyography). The goal is to find a more effective rehabilitation approach to reduce fall risk and improve walking in Parkinson's patients.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
30
A custom-made orthotic insert placed under the forefoot to shift the center of pressure anteriorly, thereby enhancing postural stability and balance during walking and standing tasks in Parkinsonian patients.
A structured training program using the Biodex Multi-Joint System to improve dynamic balance, motor control, and gait stability through reactive and perturbation-based exercises, performed 3 times per week for 8 weeks.
Change in Limit of Stability (LOS)
Measured using the Biodex Balance System SD (Model BLS003, USA). The Limit of Stability test assesses the patient's ability to voluntarily shift their center of gravity to the maximum distance in eight directions without losing balance. Results are reported as a composite stability index score (lower = better stability).
Time frame: Baseline and after 8 weeks of intervention (24 sessions)
Change in Gait Disability (UPDRS Score)
Assessed using Part III (Motor Examination) of the Unified Parkinson's Disease Rating Scale (UPDRS), specifically items related to gait, posture, and postural stability. Total score ranges from 0 (no disability) to higher values (greater impairment).
Time frame: Baseline and after 8 weeks
Change in Step Length
Measured using a 3D motion analysis system (Hocoma, Model 000341, USA). Average step length (distance between successive heel strikes) in centimeters during comfortable walking speed.
Time frame: Baseline and after 8 weeks
Change in Walking Velocity
Measured via motion analysis system during a 10-meter walk test. Reported in meters per second.
Time frame: Baseline and after 8 weeks
Change in Cadence
Number of steps per minute during walking, recorded by motion analysis system.
Time frame: Baseline and after 8 weeks
Change in Electromyographic (EMG) Amplitude of Trunk Muscles
Surface EMG (Neuropac S1, Model DI 90B, Japan) used to record amplitude of motor unit action potentials (in microvolts, µV) from rectus abdominis and erector spinae muscles during standing and walking tasks.
Time frame: Baseline and after 8 weeks
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