Papers by Celine Schreiber
Gait & Posture, Sep 1, 2017
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Journal of Clinical Medicine
Nowadays, a classification system for unilateral stiff-knee gait (SKG) kinematic severity in hemi... more Nowadays, a classification system for unilateral stiff-knee gait (SKG) kinematic severity in hemiparetic adult patients after stroke does not exist. However, such classification would be useful to the clinicians. We proposed the use of the k-means method in order to define unilateral SKG severity clusters in hemiparetic adults after stroke. A retrospective k-means cluster analysis was applied to five selected knee kinematic parameters collected during gait in 96 hemiparetic adults and 19 healthy adults from our clinical gait analysis database. A total of five discrete knee kinematic clusters were determined. Three clusters of SKG were identified, based on which a three-level severity classification was defined: unbend-knee gait, braked-knee gait, and frozen-limb gait. Preliminary construct validity of the classification was obtained. All selected knee kinematic parameters defining the five clusters and the majority of usual kinematic parameters of the lower limbs showed statisticall...
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PLOS ONE, Jun 7, 2016
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Journal of Neurophysiology, Feb 1, 2006
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Movement & Sport Sciences, 2016
En pratique clinique, il est courant de comparer les resultats d’une analyse quantifiee de la mar... more En pratique clinique, il est courant de comparer les resultats d’une analyse quantifiee de la marche de patients presentant des troubles de la marche a une population asymptomatique. Cependant, les vitesses de marche sont generalement differentes et plusieurs etudes ont montre que cela pouvait engendrer des repercussions sur l’interpretation des parametres cinematiques, cinetiques, spatio-temporaux et des patterns electromyographiques. Le but de cette etude etait d’etudier si la vitesse de marche pouvait egalement avoir une influence sur les strategies de stabilisation de la tete au cours de la marche chez une population asymptomatique. Les resultats obtenus sont coherents avec la litterature a vitesse spontanee et suggerent l’apparition d’une strategie en bloc dans les plans sagittal et transversal pour des vitesses lentes.
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Gait & Posture, Oct 1, 2016
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Neurophysiologie Clinique-clinical Neurophysiology, Nov 1, 2016
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Annals of physical and rehabilitation medicine, Sep 1, 2015
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Journal of Neurologic Physical Therapy, Jul 1, 2016
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Neurophysiologie Clinique-clinical Neurophysiology, Nov 1, 2016
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Annals of physical and rehabilitation medicine, Oct 1, 2013
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Journal of Stroke and Cerebrovascular Diseases, 2022
BACKGROUND Assessment of metabolic energy expenditure in post-stroke patients using accelerometer... more BACKGROUND Assessment of metabolic energy expenditure in post-stroke patients using accelerometers is clinically important. However, understanding of the best placement of accelerometers on the body and methods for calculating activity counts are limited. METHODS Thirty hemiparetic post-stroke patients participated in this cross-sectional study. Four triaxial accelerometers were attached to the hemiplegic and contralateral sides of the waist and ankles during various activities: lying, sitting, standing, stepping in place, and walking on a treadmill (1-5 kmh-1). Activity counts and metabolic energy expenditure of the patients were recorded simultaneously. Simple linear regression analyses were performed between the activity counts and energy expenditure. Activities were classified according to their intensity, using the definition of energetic sedentary behavior of post-stroke patients and a low fitness level group. RESULTS The best estimate of energy expenditure was obtained when the accelerometer was worn on the contralateral ankle and the activity counts was calculated using the vertical and anteroposterior axes (R2=0.812). Six classes of activity intensity (sedentary: ≤1.5 METs, very light: 1.51-1.79, light: 1.80-2.59, moderate: 2.60-3.39, hard: 3.40-4.39, and very hard: ≥4.40) and corresponding activity counts cut-off points are presented. CONCLUSION A triaxial accelerometer worn on the contralateral ankle and a method of calculating activity counts that includes at least the vertical and anteroposterior axes are recommended for estimating metabolic energy expenditure in post-stroke patients. The new activity counts cut-off points provide a significant advance in the interpretation of post-stroke monitoring in patients outside the hospital or rehabilitation center.
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Gait & Posture, 2018
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Journal of Clinical Medicine
Foot drop during the swing phase of gait and at initial foot contact is a current kinematic abnor... more Foot drop during the swing phase of gait and at initial foot contact is a current kinematic abnormality that can occur following an upper motor neuron (UMN) lesion. Functional electrical stimulation (FES) of the common peroneal nerve through an assistive device is often used in neuro-rehabilitation to help patients regain mobility. Although there are FES-specific guideline recommendations, it remains a challenge for clinicians to appropriately select patients eligible for the daily use of FES devices, as very few health insurance systems cover its cost in Europe. In Luxembourg, since 2018, successfully completing an FES clinical pathway called CHECGAIT is a prerequisite to receiving financial coverage for FES devices from the national health fund (Caisse Nationale de Santé—CNS). This study describes the structure and steps of CHECGAIT and reports our experience with a cohort of 100 patients enrolled over a three-year period. The clinical and gait outcomes of all patients were retros...
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The pathology's impact on gait pattern may be overestimated by conventional gait indices (Gil... more The pathology's impact on gait pattern may be overestimated by conventional gait indices (Gillette Gait Index - GGI, Gait Deviation Index - GDI, Gait Profile Score - GPS), since impairments' consequences on kinematics may be amplified by a change in walking speed. The objectives of this study were to evaluate the influence of walking speed on the computation of gait indices and to propose a corrective method to cancel the effects of walking speed. Spatiotemporal parameters and kinematics of fifty-four asymptomatic participants (30 M/24 W, 37.9 ± 13.7 years, 72.8 ± 13.3 kg, 1.74 ± 0.10 m) were collected at four speed conditions (C1:[0,0.4] m s-1, C2:[0.4,0.8] m s-1, C3:[0.8,1.2] m s-1, C4:spontaneous). Four values of each index were computed for each trial using successively the four conditions as normative data repository. Mean values over all participants were statistically compared (paired t-tests, 95% confidence level). Indices values computed with normative at equivalent...
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Annals of Physical and Rehabilitation Medicine
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Purpose: The main objective of this study is to characterize the lower limb sagittal joint and el... more Purpose: The main objective of this study is to characterize the lower limb sagittal joint and elevation angles during walking in participants with asymptomatic genu recurvatum and compare it with control participants without knee deformation. The secondary objective is to study the influence of walking speed on these kinematic variables. Methods: The spatio-temporal parameters and kinematics of the lower limb were recorded using an optoelectronic motion capture system in 26 participants (n = 13 with genu recurvatum and n = 13 controls). The participants walked on an instrumented treadmill during five minutes at three different speeds: slow, medium and fast. Results: Participants with genu recurvatum showed several significant differences with controls: a narrower step width, a greater maximum hip joint extension angle, a greater knee joint extension angle at mid stance, a lower maximum knee joint extension angle during the swing phase, and a greater ankle joint extension angle at t...
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NeuroRehabilitation, 2017
Recent studies have shown that stimulation of the peroneal nerve using an implantable 4-channel p... more Recent studies have shown that stimulation of the peroneal nerve using an implantable 4-channel peroneal nerve stimulator could improve gait in stroke patients. To assess structural cortical and regional cerebral metabolism changes associated with an implanted peroneal nerve electrical stimulator to correct foot drop related to a central nervous system lesion. Two stroke patients presenting a foot drop related to a central nervous system lesion were implanted with an implanted peroneal nerve electrical stimulator. Both patients underwent clinical evaluations before implantation and one year after the activation of the stimulator. Structural magnetic resonance imaging (MRI) and [18F]-fluorodeoxyglucose-positron emission tomography (FDG-PET) were acquired before and one year after the activation of the stimulator. Foot drop was corrected for both patients after the implantation of the stimulator. After one year of treatment, patient 1 improved in three major clinical tests, while pati...
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Annals of Physical and Rehabilitation Medicine, 2015
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Papers by Celine Schreiber