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M. Aldughmi1, F. Jamalli2, A. Salameh2, M. Khasawneh2, S. Dahbour3, A. Abbadi3
1University of Jordan, Department of Physiotherapy, Amman, Jordan, 2University of Jordan, Cell Therapy Center, Amman, Jordan, 3University of Jordan, Department of Internal Medicine, Amman, Jordan
Background: Turning difficulty while walking is a common functional impairment among people with Parkinson’s disease (PwPD). It often leads to falls and impaired mobility increasing disability among these individuals. Sleep disturbances are common non-motor manifestations in this population that negatively affects the quality of life of these individuals and was found to be associated with motor impairment. However, it is unknown if sleep quality is associated with the quality of turning in PwPD.
Purpose: The purpose of this study was to explore the relationship between sleep quality and turning in PwPD measured using wireless inertial sensors.
Methods: Twenty PD individuals with a mean age 59.8 (SD=12.3) and mild-moderate disease severity H&Y (Median=2, Q1-Q3=2-3) participated in this study. Participants completed the Pittsburgh Sleep Quality Index (PSQI) to assess sleep quality in the past month and then completed the Timed Up and Go test (TUG) that assess functional mobility. The participants perfumed the TUG while wearing six inertial sensors (Opals by APDM Inc.): Both wrists, both feet, trunk (sternum), and posterior lower back. The following turning parameters were extracted and used for analysis: Turning duration, turning velocity, and turning angle. Pearson’s correlations were utilized to examine the associations between PSQI and turning parameters.
Results: The PSQI was significantly associated with only the TUG turning angle (r= -.469, p= .037) but not with TUG turning duration (r= .105, p= .883) and TUG turning velocity (r= -.279, p= .233).
Conclusion(s): The results of this study demonstrate that those who are poor sleepers turn with a smaller angle while performing the TUG.
Implications: PwPD often turn with a slow speed and large angle which may be considered a compensatory strategy to prevent postural instability. Our findings indicate that sleep quality seems to play a role in this compensation strategy in which a better sleep quality seems to enhance the turning mechanisms indicated by larger angles while turning. Therapists may need to consider assessment and management of sleep quality during the rehabilitation process of PwPD, specially that turning difficulty is a common problem that significantly affects the functional mobility of these individuals and is associated with increased disability in this population. Large scale longitudinal studies are needed to conform these findings.
Funding, acknowledgements: This study was funded by the University of Jordan Deanship of Scientific Research
Keywords: Parkinson's disease, Turning, Sleep
Topic: Disability & rehabilitation
Did this work require ethics approval? Yes
Institution: University of Jordan
Committee: Deanship of Scientific Research Ethics Committee
Ethics number: 2019-2018/155
All authors, affiliations and abstracts have been published as submitted.
