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• W2967513791 abstract "ABSTRACT Background People with Parkinson's disease (PD) have often compromised walking and balance. This may be the result of the impaired lower limb tactile and proprioceptive sensation. Existing clinical measures may not be sufficiently sensitive to uncover these sensory impairments. Objective To determine whether novel measures of lower limb somatosensory discrimination are psychometrically robust and associated with mobility outcomes in people with PD. Methods Lower limb somatosensation was assessed on 2 occasions, 3 to 7 days apart, using the following 3 novel tests: gradient discrimination, roughness discrimination, and step height discrimination. Static and dynamic balance (Brief Balance Evaluations Systems Test), falls incidence, falls confidence (Falls Efficacy Scale), and gait (speed and step length) were also obtained. The participants were 27 people with PD and 27 healthy controls. Results Novel tests showed good to excellent intrarater reliability (intraclass correlation coefficient = 0.72–0.92). Significantly higher gradient and step height discrimination thresholds ( P < 0.01) were demonstrated in the participants with PD when compared with the healthy controls, indicating worse position sense at the ankle, knee, and hip. Significant correlations were identified between gradient discrimination and falls incidence ( r = 0.55), falls confidence ( r = 0.44), and balance ( r = 0.63), but not gait ( r = 0.21). Step height discrimination was significantly correlated with balance ( r = 0.54). Foot roughness discrimination was not significantly different between people with PD and healthy controls and was not significantly correlated with mobility measures ( P > .05). Conclusion These novel tests are psychometrically robust and identify impaired lower limb position sense, which was associated with balance and falls in this sample of PD patients. Interventions targeting somatosensory processing in PD may improve aspects of balance and reduce falls risk. Further research is warranted." @default.
• W2967513791 created "2019-08-22" @default.
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• W2967513791 date "2019-09-01" @default.
• W2967513791 modified "2023-09-26" @default.
• W2967513791 title "Lower Limb Somatosensory Discrimination Is Impaired in People With Parkinson's Disease: Novel Assessment and Associations With Balance, Gait, and Falls" @default.
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• W2967513791 doi "https://doi.org/10.1002/mdc3.12831" @default.
• W2967513791 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6749802" @default.
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