An Assessment of Gait Spatiotemporal and GRF of Parkinson Patients
An Assessment of Gait Spatiotemporal and GRF of Parkinson Patients
Keyvan Sharifmoradi1*, Nader Farahpour2
ABSTRACT
The aim of this study was to assess the ground reaction force characteristics of patients with Parkinson’s disease (PD) and to compare with healthy age group. A total of 14 patients with PD and 16 normal elderly subjects with matched age and gender were included in the study. A motion analysis system (Vicon Motion Analysis System) and two Kistler force plates were used to measure forces applied on the legs. Data were evaluated using independent t-test with significant point set at p< 0.05. There was no difference in cadence between left and right of normal subjects and those with PD. However, there was a significant decrease in walking speed and stride length in both sides of PD patients compared to normal subjects. Patients with PD showed a significant decrease in progression force and the second peak of vertical force. These subjects have to decrease their walking speed and increase their double limb support percentage to improve dynamic stability and decrease the magnitude of destabilizing forces. The mean values of propulsive component of anteroposterior force and the second peak of vertical ground reaction force decreased significantly due to performance of ankle joints plantar flexor which decreased in this group of subjects.
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