Obstacle Avoidance amongst Parkinson Disease Patients Is Challenged in a Threatening Context
Joint Authors
Whishaw, Ian Q.
Suchowersky, Oksana
Pellis, Sergio M.
de Bruin, Natalie
Doan, Jon B.
Brown, Lesley A.
Source
Journal of Neurodegenerative Diseases
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-05-15
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
We examined whether people with Parkinson disease (PD) have difficulty negotiating a gait obstruction in threatening (gait path and obstacle raised above floor) and nonthreatening (gait path and obstacle at floor level) contexts.
Ten PD patients were tested in both Meds OFF and Meds ON states, along with 10 age-matched controls.
Participants completed 18 gait trials, walking 4.7 m at a self-selected speed while attempting to cross an obstacle 0.15 m in height placed near the centre point of the walkway.
Kinematic and kinetic parameters were measured, and obstacle contact errors were tallied.
Results indicated that PD patients made more obstacle contacts than control participants in the threatening context.
Successful crossings by PD patients in the threatening condition also exhibited kinematic differences, with Meds OFF PD patients making shorter crossing steps, with decreased initiation and crossing velocities.
The findings from this study lend support to the theory that PD patients rely on directed attention to initiate and control movement, while providing indication that the motor improvements provided by current PD pharmacotherapy may be limited by contextual interference.
These movement patterns may be placing PD patients at risk of obstacle contact and falling.
American Psychological Association (APA)
Doan, Jon B.& de Bruin, Natalie& Pellis, Sergio M.& Suchowersky, Oksana& Whishaw, Ian Q.& Brown, Lesley A.. 2013. Obstacle Avoidance amongst Parkinson Disease Patients Is Challenged in a Threatening Context. Journal of Neurodegenerative Diseases،Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-498121
Modern Language Association (MLA)
Doan, Jon B.…[et al.]. Obstacle Avoidance amongst Parkinson Disease Patients Is Challenged in a Threatening Context. Journal of Neurodegenerative Diseases No. 2013 (2013), pp.1-8.
https://search.emarefa.net/detail/BIM-498121
American Medical Association (AMA)
Doan, Jon B.& de Bruin, Natalie& Pellis, Sergio M.& Suchowersky, Oksana& Whishaw, Ian Q.& Brown, Lesley A.. Obstacle Avoidance amongst Parkinson Disease Patients Is Challenged in a Threatening Context. Journal of Neurodegenerative Diseases. 2013. Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-498121
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-498121