Temporal Characteristics of High-Frequency Lower-Limb Oscillation during Freezing of Gait in Parkinson’s Disease
Joint Authors
Yungher, Don A.
Morris, Tiffany R.
Dilda, Valentina
Shine, James M.
Moore, Steven T.
Lewis, Simon J. G.
Naismith, Sharon L.
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-07-02
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
A cardinal feature of freezing of gait (FOG) is high frequency (3–8 Hz) oscillation of the legs, and this study aimed to quantify the temporal pattern of lower-body motion prior to and during FOG.
Acceleration data was obtained from sensors attached to the back, thighs, shanks, and feet in 14 Parkinson’s disease patients performing timed-up-and-go tasks, and clinical assessment of FOG was performed by two experienced raters from video.
A total of 23 isolated FOG events, defined as occurring at least 5 s after gait initiation and with no preceding FOG, were identified from the clinical ratings.
The corresponding accelerometer records were analyzed within a 4 s window centered at the clinical onset of freezing.
FOG-related high-frequency oscillation (an increase in power in the 3–8 Hz band >3 SD from baseline) followed a distal to proximal onset pattern, appearing at the feet, shanks, thighs, and then back over a period of 250 ms.
Peak power tended to decrease as the focus of oscillation moved from feet to back.
There was a consistent delay (mean 872 ms) between the onset of high frequency oscillation at the feet and clinical onset of FOG.
We infer that FOG is characterized by high frequency oscillation at the feet, which progresses proximally and is mechanically damped at the torso.
American Psychological Association (APA)
Yungher, Don A.& Morris, Tiffany R.& Dilda, Valentina& Shine, James M.& Naismith, Sharon L.& Lewis, Simon J. G.…[et al.]. 2014. Temporal Characteristics of High-Frequency Lower-Limb Oscillation during Freezing of Gait in Parkinson’s Disease. Parkinson’s Disease،Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1047216
Modern Language Association (MLA)
Yungher, Don A.…[et al.]. Temporal Characteristics of High-Frequency Lower-Limb Oscillation during Freezing of Gait in Parkinson’s Disease. Parkinson’s Disease No. 2014 (2014), pp.1-7.
https://search.emarefa.net/detail/BIM-1047216
American Medical Association (AMA)
Yungher, Don A.& Morris, Tiffany R.& Dilda, Valentina& Shine, James M.& Naismith, Sharon L.& Lewis, Simon J. G.…[et al.]. Temporal Characteristics of High-Frequency Lower-Limb Oscillation during Freezing of Gait in Parkinson’s Disease. Parkinson’s Disease. 2014. Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1047216
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1047216