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Total 601 results found since Jan 2013.

Sensors, Vol. 20, Pages 37: Gait Asymmetry Post-Stroke: Determining Valid and Reliable Methods Using a Single Accelerometer Located on the Trunk
Sarah A. Moore Asymmetry is a cardinal symptom of gait post-stroke that is targeted during rehabilitation. Technological developments have allowed accelerometers to be a feasible tool to provide digital gait variables. Many acceleration-derived variables are proposed to measure gait asymmetry. Despite a need for accurate calculation, no consensus exists for what is the most valid and reliable variable. Using an instrumented walkway (GaitRite) as the reference standard, this study compared the validity and reliability of multiple acceleration-derived asymmetry variables. Twenty-five post-stroke participants performed r...
Source: Sensors - December 18, 2019 Category: Biotechnology Authors: Christopher Buckley M. Encarna Mic ó-Amigo Michael Dunne-Willows Alan Godfrey Aodh án Hickey Sue Lord Lynn Rochester Silvia Del Din Sarah A. Moore Tags: Article Source Type: research

Sensors, Vol. 20, Pages 2452: Assessment of an Assistive Control Approach Applied in an Active Knee Orthosis Plus Walker for Post-Stroke Gait Rehabilitation
iano Bastos The goal of this study is the assessment of an assistive control approach applied to an active knee orthosis plus a walker for gait rehabilitation. The study evaluates post-stroke patients and healthy subjects (control group) in terms of kinematics, kinetics, and muscle activity. Muscle and gait information of interest were acquired from their lower limbs and trunk, and a comparison was conducted between patients and control group. Signals from plantar pressure, gait phase, and knee angle and torque were acquired during gait, which allowed us to verify that the stance control strategy proposed here was effi...
Source: Sensors - April 25, 2020 Category: Biotechnology Authors: Ana Cecilia Villa-Parra Jessica Lima Denis Delisle-Rodriguez Laura Vargas-Valencia Anselmo Frizera-Neto Teodiano Bastos Tags: Article Source Type: research

Sensors, Vol. 20, Pages 2748: Feasibility of a Sensor-Based Technological Platform in Assessing Gait and Sleep of In-Hospital Stroke and Incomplete Spinal Cord Injury (iSCI) Patients
jsers Recovery of the walking function is one of the most common rehabilitation goals of neurological patients. Sufficient and adequate sleep is a prerequisite for recovery or training. To objectively monitor patients’ progress, a combination of different sensors measuring continuously over time is needed. A sensor-based technological platform offers possibilities to monitor gait and sleep. Implementation in clinical practice is of utmost relevance and has scarcely been studied. Therefore, this study examined the feasibility of a sensor-based technological platform within the clinical setting. Participant...
Source: Sensors - May 11, 2020 Category: Biotechnology Authors: Maartje M. S. Hendriks Marije Vos-van der Hulst Noel L. W. Keijsers Tags: Article Source Type: research

Sensors, Vol. 20, Pages 4545: Sensorized Assessment of Dynamic Locomotor Imagery in People with Stroke and Healthy Subjects
In conclusion, the instrumented approach through wearable motion devices adds significant information to the current dMI approach, further supporting their applications in neurorehabilitation for monitoring imagery training protocols in patients with stroke.
Source: Sensors - August 12, 2020 Category: Biotechnology Authors: Daniela De Bartolo Valeria Belluscio Giuseppe Vannozzi Giovanni Morone Gabriella Antonucci Gianluca Giordani Stefania Santucci Federica Resta Franco Marinozzi Fabiano Bini Stefano Paolucci Marco Iosa Tags: Article Source Type: research

Sensors, Vol. 20, Pages 6763: Decoding Attempted Hand Movements in Stroke Patients Using Surface Electromyography
This study investigates whether nine different motion classes of the hand and forearm could be decoded from forearm EMG in 15 stroke patients. This study also evaluates the test-retest reliability of a classical, but simple, classifier (linear discriminant analysis) and advanced, but more computationally intensive, classifiers (autoencoders and convolutional neural networks). Moreover, the association between the level of motor impairment and classification accuracy was tested. Three channels of surface EMG were recorded during the following motion classes: Hand Close, Hand Open, Wrist Extension, Wrist Flexion, Supination,...
Source: Sensors - November 26, 2020 Category: Biotechnology Authors: Mads Jochumsen Imran Khan Niazi Muhammad Zia ur Rehman Imran Amjad Muhammad Shafique Syed Omer Gilani Asim Waris Tags: Article Source Type: research

Sensors, Vol. 20, Pages 7312: 3D Motion Capture May Detect Spatiotemporal Changes in Pre-Reaching Upper Extremity Movements with and without a Real-Time Constraint Condition in Infants with Perinatal Stroke and Cerebral Palsy: A Longitudinal Case Series
C. Heathcock Perinatal stroke (PS), occurring between 20 weeks of gestation and 28 days of life, is a leading cause of hemiplegic cerebral palsy (HCP). Hallmarks of HCP are motor and sensory impairments on one side of the body—especially the arm and hand contralateral to the stroke (involved side). HCP is diagnosed months or years after the original brain injury. One effective early intervention for this population is constraint-induced movement therapy (CIMT), where the uninvolved arm is constrained by a mitt or cast, and therapeutic activities are performed with the involved arm. In this preliminary in...
Source: Sensors - December 19, 2020 Category: Biotechnology Authors: Julia Mazzarella Mike McNally Daniel Richie Ajit M. W. Chaudhari John A. Buford Xueliang Pan Jill C. Heathcock Tags: Article Source Type: research

Sensors, Vol. 20, Pages 7338: Principal Characteristics of Affected and Unaffected Side Trunk Movement and Gait Event Parameters during Hemiplegic Stroke Gait with IMU Sensor
Conclusions: The difference between each side leg should be considered during the development of a diagnosis method. This research can be utilized to develop functional assessment tools for personalized treatment and to design appropriate training protocols.
Source: Sensors - December 21, 2020 Category: Biotechnology Authors: Jeong-Woo Seo Seul-Gee Kim Joong Il Kim Boncho Ku Kahye Kim Sangkwan Lee Jaeuk U. Kim Tags: Letter Source Type: research

Sensors, Vol. 21, Pages 921: Functional Electrical Stimulation for Foot Drop in Post-Stroke People: Quantitative Effects on Step-to-Step Symmetry of Gait Using a Wearable Inertial Sensor
lli Pagnussat The main purpose of the present study was to assess the effects of foot drop stimulators (FDS) in individuals with stroke by means of spatio-temporal and step-to-step symmetry, harmonic ratio (HR), parameters obtained from trunk accelerations acquired using a wearable inertial sensor. Thirty-two patients (age: 56.84 ± 9.10 years; 68.8% male) underwent an instrumental gait analysis, performed using a wearable inertial sensor before and a day after the 10-session treatment (PRE and POST sessions). The treatment consisted of 10 sessions of 20 min of walking on a treadmill while using the FD...
Source: Sensors - January 29, 2021 Category: Biotechnology Authors: Schifino Cimolin Pau da Cunha Leban Porta Galli Pagnussat Tags: Communication Source Type: research

Sensors, Vol. 21, Pages 914: Paddle Stroke Analysis for Kayakers Using Wearable Technologies
In this study, we propose a systematic approach for evaluating the training performance of kayakers based on the multiple sensors fusion technology. Kayakers’ motion information is collected by miniature inertial sensor nodes attached on the body. The extend Kalman filter (EKF) method is used for data fusion and updating human posture. After sensor calibration, the kayakers’ actions are reconstructed by rigid-body model. The quantitative kinematic analysis is carried out based on joint angles. Machine learning algorithms are used for differentiating the stroke cycle into different phases, includ...
Source: Sensors - January 29, 2021 Category: Biotechnology Authors: Long Liu Hui-Hui Wang Sen Qiu Yun-Cui Zhang Zheng-Dong Hao Tags: Article Source Type: research

Sensors, Vol. 21, Pages 2134: A Sensor-Based Multichannel FES System to Control Knee Joint and Reduce Stance Phase Asymmetry in Post-Stroke Gait
In this study, 11 participants were equipped with inertial measurements units (IMU) and foot pressure insoles after supratentorial ischemic or hemorrhagic stroke, informing on knee angle and gait events used to online adapt FES during a 10 m walking protocol. Asymmetry of stance time and weight bearing were monitored as well as gait quality and physiological cost through a series of relevant markers. Vertical trunk motion has been significantly reduced during gait with FES (p-value = 0.038). Despite no significant improvement of stance phase asymmetry has been found, this preliminary work shows evidence of promising techni...
Source: Sensors - March 18, 2021 Category: Biotechnology Authors: Beno ît Sijobert Christine Azevedo Joanna Pontier Sahara Graf Charles Fattal Tags: Article Source Type: research

Sensors, Vol. 21, Pages 4353: Whole-Body Movements Increase Arm Use Outcomes of Wrist-Worn Accelerometers in Stroke Patients
This study investigates to what extent arm use measurements with wrist-worn accelerometers are affected by whole-body movements. Assuming that arm movements during whole-body movements are non-functional, we quantify the effect of whole-body movements by comparing two methods: Arm use measured with wrist-worn accelerometers during all whole-body postures and movements (P&M method), and during sitting/standing only (sit/stand method). We have performed a longitudinal observational cohort study with measurements in 33 stroke patients during weeks 3, 12, and 26 poststroke. The P&M method shows higher d...
Source: Sensors - June 25, 2021 Category: Biotechnology Authors: Gerrit Ruben Hendrik Regterschot Ruud W. Selles Gerard M. Ribbers Johannes B. J. Bussmann Tags: Article Source Type: research

Brain ‐Derived Neurotrophic Factor Gene Polymorphism Predicts Response to Continuous Theta Burst Stimulation in Chronic Stroke Patients
ConclusionsOur findings strongly suggest that BDNF genotype differentially affects neuroplastic responses to TMS in individuals with chronic stroke. This provides novel insight into potential sources of variability in cTBS response in patients, which has important implications for optimizing the utility of this neuromodulation approach. Incorporating BDNF polymorphism genetic screening to stratify patients prior to use of cTBS as a neuromodulatory technique in therapy or research may optimize response rates.
Source: Neuromodulation: Technology at the Neural Interface - July 13, 2021 Category: Biotechnology Authors: Shreya Parchure, Denise Y. Harvey, Priyanka P. Shah ‐Basak, Laura DeLoretta, Rachel Wurzman, Daniela Sacchetti, Olufunsho Faseyitan, Falk W. Lohoff, Roy H. Hamilton Tags: Basic Research Source Type: research

Sensors, Vol. 21, Pages 6431: BCI-Based Control for Ankle Exoskeleton T-FLEX: Comparison of Visual and Haptic Stimuli with Stroke Survivors
A. Cifuentes Brain–computer interface (BCI) remains an emerging tool that seeks to improve the patient interaction with the therapeutic mechanisms and to generate neuroplasticity progressively through neuromotor abilities. Motor imagery (MI) analysis is the most used paradigm based on the motor cortex’s electrical activity to detect movement intention. It has been shown that motor imagery mental practice with movement-associated stimuli may offer an effective strategy to facilitate motor recovery in brain injury patients. In this sense, this study aims to present the BCI associated with visual and haptic stimuli to...
Source: Sensors - September 26, 2021 Category: Biotechnology Authors: Patricio Barria Angie Pino Nicol ás Tovar Daniel Gomez-Vargas Karim Baleta Camilo A. R. D íaz Marcela M únera Carlos A. Cifuentes Tags: Article Source Type: research

Sensors, Vol. 21, Pages 8002: Muscle Synergies and Clinical Outcome Measures Describe Different Factors of Upper Limb Motor Function in Stroke Survivors Undergoing Rehabilitation in a Virtual Reality Environment
a Turolla Recent studies have investigated muscle synergies as biomarkers for stroke, but it remains controversial if muscle synergies and clinical observation convey the same information on motor impairment. We aim to identify whether muscle synergies and clinical scales convey the same information or not. Post-stroke patients were administered an upper limb treatment. Before (T0) and after (T1) treatment, we assessed motor performance with clinical scales and motor output with EMG-derived muscle synergies. We implemented an exploratory factor analysis (EFA) and a confirmatory factor analysis (CFA) to identify the und...
Source: Sensors - November 30, 2021 Category: Biotechnology Authors: Lorenza Maistrello Daniele Rimini Vincent C. K. Cheung Giorgia Pregnolato Andrea Turolla Tags: Article Source Type: research

Brain ?Derived Neurotrophic Factor Gene Polymorphism Predicts Response to Continuous Theta Burst Stimulation in Chronic Stroke Patients
ConclusionsOur findings strongly suggest that BDNF genotype differentially affects neuroplastic responses to TMS in individuals with chronic stroke. This provides novel insight into potential sources of variability in cTBS response in patients, which has important implications for optimizing the utility of this neuromodulation approach. Incorporating BDNF polymorphism genetic screening to stratify patients prior to use of cTBS as a neuromodulatory technique in therapy or research may optimize response rates.
Source: Neuromodulation: Technology at the Neural Interface - July 12, 2021 Category: Biotechnology Authors: Shreya Parchure, Denise Y. Harvey, Priyanka P. Shah ?Basak, Laura DeLoretta, Rachel Wurzman, Daniela Sacchetti, Olufunsho Faseyitan, Falk W. Lohoff, Roy H. Hamilton Tags: Basic Research Source Type: research