Ability of a set of trunk acceleration-derived gait stability indexes to identify gait unbalance and recurrent fallers in subjects with Parkinson's disease

2021 ◽  
Vol 429 ◽  
pp. 117670
Author(s):  
Stefano Filippo Castiglia ◽  
Antonella Tatarelli ◽  
Alberto Ranavolo ◽  
Fabrizio Magnifica ◽  
Dante Trabassi ◽  
...  
2010 ◽  
Vol 91 (4) ◽  
pp. 632-638 ◽  
Author(s):  
Kristin A. Lowry ◽  
Andrew J. Carrel ◽  
Jessica M. McIlrath ◽  
Ann L. Smiley-Oyen

2018 ◽  
Vol 9 ◽  
Author(s):  
Peter C. Fino ◽  
Martina Mancini ◽  
Carolin Curtze ◽  
John G. Nutt ◽  
Fay B. Horak

2009 ◽  
Vol 33 (1) ◽  
pp. 82-88 ◽  
Author(s):  
Kamiar Ghoseiri ◽  
Bijan Forogh ◽  
Mohammad Ali Sanjari ◽  
Ahlam Bavi

This paper explores the use of biofeedback to improve gait in Parkinson's disease (PD) and, in particular, reports on the design and testing of a new vibratory orthosis. The orthosis causes a rhythmic vibratory stimulus to be applied to one or other side of the lumbar region. The stimulus is synchronized with stepping through the use of heel-located switches; each switch controls the stimulus to the corresponding side of the body. In the experimental evaluation it was hypothesized that step-synchronized, vibratory stimulation applied to the lumbar region will lead to an increase in walking velocity in patients with idiopathic Parkinson's disease. Subjects were asked to carry out walking trials under two conditions. In one condition, the vibratory orthosis was active; in the other condition the vibratory orthosis was inactive. Walking velocity was measured over a straight, 10 m walkway. A comparison between the two conditions using a paired t-test showed a significant increase in walking velocity when the vibratory orthosis was active, compared with the inactive condition. It was speculated that use of the vibratory orthosis, which stimulates proprioceptive receptors, may lead to an improvement in gait, stability and may support gait re-education in PD patients. It was also suggested that the results may inform future ideas for rehabilitation of similar neurological diseases.


Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 2132 ◽  
Author(s):  
Myeounggon Lee ◽  
Changhong Youm ◽  
Byungjoo Noh ◽  
Hwayoung Park ◽  
Sang-Myung Cheon

Evaluating gait stability at slower or faster speeds and self-preferred speeds based on continuous steps may assist in determining the severity of motor symptoms in Parkinson’s disease (PD) patients. This study aimed to investigate the gait ability at imposed speed conditions in PD patients during overground walking. Overall, 74 PD patients and 52 age-matched healthy controls were recruited. Levodopa was administered to patients in the PD group, and all participants completed imposed slower, preferred, and faster speed walking tests along a straight 15-m walkway wearing shoe-type inertial measurement units. Reliability of the slower and faster conditions between the estimated and measured speeds indicated excellent agreement for PD patients and controls. PD patients demonstrated higher gait asymmetry (GA) and coefficient of variance (CV) for stride length and stance phase than the controls at slower speeds and higher CVs for phases for single support, double support, and stance. CV of the double support phase could distinguish between PD patients and controls at faster speeds. The GA and CVs of stride length and phase-related variables were associated with motor symptoms in PD patients. Speed conditions should be considered during gait analysis. Gait variability could evaluate the severity of motor symptoms in PD patients.


2016 ◽  
Vol 15 (3) ◽  
pp. 249-258 ◽  
Author(s):  
Emily J Henderson ◽  
Stephen R Lord ◽  
Matthew A Brodie ◽  
Daisy M Gaunt ◽  
Andrew D Lawrence ◽  
...  

2016 ◽  
Vol 44 ◽  
pp. 83-88 ◽  
Author(s):  
Wen-Chieh Yang ◽  
Wei-Li Hsu ◽  
Ruey-Meei Wu ◽  
Tung-Wu Lu ◽  
Kwan-Hwa Lin

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3449
Author(s):  
Stefano Filippo Castiglia ◽  
Antonella Tatarelli ◽  
Dante Trabassi ◽  
Roberto De Icco ◽  
Valentina Grillo ◽  
...  

The aims of this study were to assess the ability of 16 gait indices to identify gait instability and recurrent fallers in persons with Parkinson’s disease (pwPD), regardless of age and gait speed, and to investigate their correlation with clinical and kinematic variables. The trunk acceleration patterns were acquired during the gait of 55 pwPD and 55 age-and-speed matched healthy subjects using an inertial measurement unit. We calculated the harmonic ratios (HR), percent recurrence, and percent determinism (RQAdet), coefficient of variation, normalized jerk score, and the largest Lyapunov exponent for each participant. A value of ≤1.50 for the HR in the antero-posterior direction discriminated between pwPD at Hoehn and Yahr (HY) stage 3 and healthy subjects with a 67% probability, between pwPD at HY 3 and pwPD at lower HY stages with a 73% probability, and it characterized recurrent fallers with a 77% probability. Additionally, HR in the antero-posterior direction was correlated with pelvic obliquity and rotation. RQAdet in the antero-posterior direction discriminated between pwPD and healthy subjects with 67% probability, regardless of the HY stage, and was correlated with stride duration and cadence. Therefore, HR and RQAdet in the antero-posterior direction can both be used as age- and-speed-independent markers of gait instability.


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