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Total 332 results found since Jan 2013.

Sensors, Vol. 22, Pages 1009: A Case Study of Upper Limb Robotic-Assisted Therapy Using the Track-Hold Device
Moroni The Track-Hold System (THS) project, developed in a healthcare facility and therefore in a controlled and protected healthcare environment, contributes to the more general and broad context of Robotic-Assisted Therapy (RAT). RAT represents an advanced and innovative rehabilitation method, both motor and cognitive, and uses active, passive, and facilitating robotic devices. RAT devices can be equipped with sensors to detect and track voluntary and involuntary movements. They can work in synergy with multimedia protocols developed ad hoc to achieve the highest possible level of functional re-education. The THS is...
Source: Sensors - January 28, 2022 Category: Biotechnology Authors: Marco Righi Massimo Magrini Cristina Dolciotti Davide Moroni Tags: Article Source Type: research

Sensors, Vol. 22, Pages 2735: Validity and Reliability of Kinect v2 for Quantifying Upper Body Kinematics during Seated Reaching
oger Kinematic analysis of the upper limbs is a good way to assess and monitor recovery in individuals with stroke, but it remains little used in clinical routine due to its low feasibility. The aim of this study is to assess the validity and reliability of the Kinect v2 for the analysis of upper limb reaching kinematics. Twenty-six healthy participants performed seated hand-reaching tasks while holding a dumbbell to induce behaviour similar to that of stroke survivors. With the Kinect v2 and with the VICON, 3D upper limb and trunk motions were simultaneously recorded. The Kinect assesses trunk compensations, hand rang...
Source: Sensors - April 2, 2022 Category: Biotechnology Authors: Germain Faity Denis Mottet J érôme Froger Tags: Article Source Type: research

Sensors, Vol. 22, Pages 2728: Temporal Synergies Detection in Gait Cyclograms Using Wearable Technology
‡ The human gait can be described as the synergistic activity of all individual components of the sensory–motor system. The central nervous system (CNS) develops synergies to execute endpoint motion by coordinating muscle activity to reflect the global goals of the endpoint trajectory. This paper proposes a new method for assessing temporal dynamic synergies. Principal component analysis (PCA) has been applied on the signals acquired by wearable sensors (inertial measurement units, IMU and ground reaction force sensors, GRF mounted on feet) to detect temporal synergies in the space of two-dimensional PCA ...
Source: Sensors - April 2, 2022 Category: Biotechnology Authors: Marija M. Gavrilovi ć Milica M. Jankovi ć Tags: Article Source Type: research

Sensors, Vol. 22, Pages 3674: Linear-Range Extension for Linear Variable Differential Transformer Using Hyperbolic Sine Function
iewruja In this paper, a circuit technique to extend the measuring range of a linear variable differential transformer (LVDT) is proposed. The transfer characteristic of the LVDT contains the odd function form of the cubic polynomial. Therefore, the measuring range of a commercial LVDT is linear in a narrow range compared to its physical dimensions. The wide measuring range of the LVDT requires a large structure of the LVDT, which increases the scale and the cost of the measurement system. The measuring range of the LVDT can be linearly extended to the maximum of the stroke range using the proposed technique. The reali...
Source: Sensors - May 12, 2022 Category: Biotechnology Authors: Apinai Rerkratn Jakkapun Tongcharoen Wandee Petchmaneelumka Vanchai Riewruja Tags: Article Source Type: research

Sensors, Vol. 22, Pages 3747: Robustness and Tracking Performance Evaluation of PID Motion Control of 7 DoF Anthropomorphic Exoskeleton Robot Assisted Upper Limb Rehabilitation
Rahman Upper limb dysfunctions (ULD) are common following a stroke. Annually, more than 15 million people suffer a stroke worldwide. We have developed a 7 degrees of freedom (DoF) exoskeleton robot named the smart robotic exoskeleton (SREx) to provide upper limb rehabilitation therapy. The robot is designed for adults and has an extended range of motion compared to our previously designed ETS-MARSE robot. While providing rehabilitation therapy, the exoskeleton robot is always subject to random disturbance. Moreover, these types of robots manage various patients and different degrees of impairment, which are quite impo...
Source: Sensors - May 14, 2022 Category: Biotechnology Authors: Tanvir Ahmed Md Rasedul Islam Brahim Brahmi Mohammad Habibur Rahman Tags: Article Source Type: research

Sensors, Vol. 22, Pages 6323: Deep Learning-Based Subtask Segmentation of Timed Up-and-Go Test Using RGB-D Cameras
Ha Ryu The timed up-and-go (TUG) test is an efficient way to evaluate an individual’s basic functional mobility, such as standing up, walking, turning around, and sitting back. The total completion time of the TUG test is a metric indicating an individual’s overall mobility. Moreover, the fine-grained consumption time of the individual subtasks in the TUG test may provide important clinical information, such as elapsed time and speed of each TUG subtask, which may not only assist professionals in clinical interventions but also distinguish the functional recovery of patients. To perform mor...
Source: Sensors - August 23, 2022 Category: Biotechnology Authors: Yoon Jeong Choi Yoo Sung Bae Baek Dong Cha Je Ha Ryu Tags: Article Source Type: research

Sensors, Vol. 22, Pages 8273: Classification of Activities of Daily Living Based on Grasp Dynamics Obtained from a Leap Motion Controller
savadas Stroke is one of the leading causes of mortality and disability worldwide. Several evaluation methods have been used to assess the effects of stroke on the performance of activities of daily living (ADL). However, these methods are qualitative. A first step toward developing a quantitative evaluation method is to classify different ADL tasks based on the hand grasp. In this paper, a dataset is presented that includes data collected by a leap motion controller on the hand grasps of healthy adults performing eight common ADL tasks. Then, a set of features with time and frequency domains is combined with two well-...
Source: Sensors - October 28, 2022 Category: Biotechnology Authors: Hajar Sharif Ahmadreza Eslaminia Pramod Chembrammel Thenkurussi Kesavadas Tags: Article Source Type: research

Sensors, Vol. 23, Pages 424: Validation of SuPerSense, a Sensorized Surface for the Evaluation of Posture Perception in Supine Position
This study aimed to validate a sensorized version of a perceptive surface that may be used for the early assessment of misperception of body midline representation in subjects with right stroke, even when they are not yet able to stand in an upright posture. This device, called SuPerSense, allows testing of the load distribution of the body weight on the back in a supine position. The device was tested in 15 patients with stroke, 15 age-matched healthy subjects, and 15 young healthy adults, assessing three parameters analogous to those conventionally extracted by a baropodometric platform in a standing posture. Subjects we...
Source: Sensors - December 30, 2022 Category: Biotechnology Authors: Daniela De Bartolo Ilaria D ’amico Marco Iosa Fabio Aloise Giovanni Morone Franco Marinozzi Fabiano Bini Stefano Paolucci Ennio Spadini Tags: Article Source Type: research

Sensors, Vol. 23, Pages 536: A Clinical Perspective on Bespoke Sensing Mechanisms for Remote Monitoring and Rehabilitation of Neurological Diseases: Scoping Review
This study aims to review current trends in the application of sensing mechanisms in remote monitoring and rehabilitation in neurological diseases, and to provide clinical insights to develop bespoke sensing mechanisms. A systematic search was performed using the PubMED database to identify 16 papers published for the period between 2018 to 2022. Teleceptive sensors (56%) were utilized more often than wearable proximate sensors (50%). The most commonly used modality was infrared (38%) and acceleration force (38%), followed by RGB color, EMG, light and temperature, and radio signal. The strategy adopted to improve the sensi...
Source: Sensors - January 3, 2023 Category: Biotechnology Authors: Jia Min Yen Jeong Hoon Lim Tags: Review Source Type: research

Sensors, Vol. 23, Pages 1289: Time-Based and Path-Based Analysis of Upper-Limb Movements during Activities of Daily Living
Mihelj Patients after stroke need to re-learn functional movements required for independent living throughout the rehabilitation process. In the study, we used a wearable sensory system for monitoring the movement of the upper limbs while performing activities of daily living. We implemented time-based and path-based segmentation of movement trajectories and muscle activity to quantify the activities of the unaffected and the affected upper limbs. While time-based segmentation splits the trajectory in quants of equal duration, path-based segmentation isolates completed movements. We analyzed the hand movement path and ...
Source: Sensors - January 23, 2023 Category: Biotechnology Authors: Sebastjan Šlajpah Eva Čebašek Marko Munih Matja ž Mihelj Tags: Article Source Type: research

Sensors, Vol. 23, Pages 5213: Attempt to Make the Upper-Limb Item of Objective Fugl & ndash;Meyer Assessment Using 9-Axis Motion Sensors
This study aimed to create a more objective and standardized evaluation based on an FMA of the upper-limb items. A total of 30 first-ever stroke patients (65.3 ± 10.3 years old) and 15 healthy participants (35.4 ± 13.4 years old) admitted to Itami Kousei Neurosurgical Hospital were included. A nine-axis motion sensor was attached to the participants, and the joint angles of 17 upper-limb items (excluding fingers) and 23 FMA upper-limb items (excluding reflexes and fingers) were measured. From the measurement results, we analyzed the time-series data of each movement and obtained the correlatio...
Source: Sensors - May 30, 2023 Category: Biotechnology Authors: Yusuke Ueyama Takashi Takebayashi Kenta Takeuchi Makoto Yamazaki Keisuke Hanada Yuho Okita Shinichi Shimada Tags: Article Source Type: research

Sensors, Vol. 23, Pages 5690: Counting Finger and Wrist Movements Using Only a Wrist-Worn, Inertial Measurement Unit: Toward Practical Wearable Sensing for Hand-Related Healthcare Applications
Reinkensmeyer The ability to count finger and wrist movements throughout the day with a nonobtrusive, wearable sensor could be useful for hand-related healthcare applications, including rehabilitation after a stroke, carpal tunnel syndrome, or hand surgery. Previous approaches have required the user to wear a ring with an embedded magnet or inertial measurement unit (IMU). Here, we demonstrate that it is possible to identify the occurrence of finger and wrist flexion/extension movements based on vibrations detected by a wrist-worn IMU. We developed an approach we call “Hand Activity Recognition through us...
Source: Sensors - June 18, 2023 Category: Biotechnology Authors: Shusuke Okita Roman Yakunin Jathin Korrapati Mina Ibrahim Diogo Schwerz de Lucena Vicky Chan David J. Reinkensmeyer Tags: Article Source Type: research

Sensors, Vol. 23, Pages 6150: A Rigorous and Integrated On-Water Monitoring System for Performance and Technique Improvement in Rowing
oulis This paper presents a prototype, on-water rowing monitoring system and its testing results for a single scull boat. The proposed system aims at recording critical kinetic (athlete biomechanics and oar/seat movements) and kinematic (boat position, velocity, acceleration, and attitude) parameters for sport performance evaluation and rowing technique improvement. The data acquisition unit is organized in two parts: the first part aims at logging boat kinematics based on GNSS/INS filtering, while the second one facilitates kinetics data recording using a series of analog sensors (potentiometers, strain gauges) instal...
Source: Sensors - July 4, 2023 Category: Biotechnology Authors: Thanassis Mpimis Vassilis Gikas Vassilios Gourgoulis Tags: Article Source Type: research

Sensors, Vol. 15, Pages 4550-4563: Real-Time Strap Pressure Sensor System for Powered Exoskeletons
We present a system to monitor pressure exerted by physical human-machine interfaces and provide data about levels of skin/body pressure in fastening straps. The system consists of sensing arrays, signal processing hardware with wireless transmission, and an interactive GUI. For validation, a lower-body powered exoskeleton carrying the full weight of users was used. Experimental trials were conducted with one SCI and one able-bodied subject. The system can help prevent skin injuries related to excessive pressure in mobility-impaired patients using powered exoskeletons, supporting functionality, independence and better overall quality of life.
Source: Sensors - February 16, 2015 Category: Biotechnology Authors: Jesús Tamez-DuqueRebeca Cobian-UgaldeAtilla KilicarslanAnusha VenkatakrishnanRogelio SotoJose Contreras-Vidal Tags: Article Source Type: research

Sensors, Vol. 15, Pages 11511-11527: Design of a Novel Telerehabilitation System with a Force-Sensing Mechanism
Many stroke patients are expected to rehabilitate at home, which limits their access to proper rehabilitation equipment, treatment, or assessment by therapists. We have developed a novel telerehabilitation system that incorporates a human-upper-limb-like device and an exoskeleton device. The system is designed to provide the feeling of real therapist–patient contact via telerehabilitation. We applied the principle of a series elastic actuator to both the master and slave devices. On the master side, the therapist can operate the device in a rehabilitation center. When performing passive training, the master device can de...
Source: Sensors - May 19, 2015 Category: Biotechnology Authors: Songyuan ZhangShuxiang GuoBaofeng GaoHideyuki HirataHidenori Ishihara Tags: Article Source Type: research