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https://www.readbyqxmd.com/read/28814056/design-of-a-lightweight-tethered-torque-controlled-knee-exoskeleton
#1
Kirby Ann Witte, Andreas M Fatschel, Steven H Collins
Lower-limb exoskeletons show promise for improving gait rehabilitation for those with chronic gait abnormalities due to injury, stroke or other illness. We designed and built a tethered knee exoskeleton with a strong lightweight frame and comfortable, four-point contact with the leg. The device is structurally compliant in select directions, instrumented to measure joint angle and applied torque, and is lightweight (0.76 kg). The exoskeleton is actuated by two off-board motors. Closed loop torque control is achieved using classical proportional feedback control with damping injection in conjunction with iterative learning...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28814047/a-simple-tool-to-measure-spasticity-in-spinal-cord-injury-subjects
#2
Arash Arami, Nevio L Tagliamonte, Federica Tamburella, Hsieng-Yung Huang, Marco Molinari, Etienne Burdet
This work presents a wearable device and the algorithms for quantitative modelling of joint spasticity and its application in a pilot group of subjects with different levels of spinal cord injury. The device comprises light-weight instrumented handles to measure the interaction force between the subject and the physical therapist performing the tests, EMG sensors and inertial measurement units to measure muscle activity and joint kinematics. Experimental tests included the passive movement of different body segments, where the spasticity was expected, at different velocities...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28814039/evaluating-wearable-multimodal-sensor-insoles-for-motion-pattern-measurements-in-stroke-rehabilitation-a-pilot-study
#3
V David, M Forjan, J Martinek, S Kotzian, H Jagos, D Rafolt
The majority of stroke patients experience deficits in motoric functions, especially in gait and mobility. They need rehabilitation to regain walking independence, which is a major goal of rehabilitation after stroke. To document and assess the rehabilitation progress, instrumented motion analysis and clinical assessments are commonly used. In a clinical pilot study the applicability of an instrumented insole system in stroke rehabilitation is evaluated. Motion parameter of 35 stroke patients were gathered with the system while completing 90 s level walking and Timed Up & Go test at the beginning and end of four weeks inpatient rehabilitation...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28814013/a-third-arm-design-of-a-bypass-prosthesis-enabling-incorporation
#4
Adam W Wilson, Daniel H Blustein, Jon W Sensinger
A variety of factors affect the performance of a person using a myoelectric prosthesis, including increased control noise, reduced sensory feedback, and muscle fatigue. Many studies use able-bodied subjects to control a myoelectric prosthesis using a bypass socket in order to make comparisons to movements made with intact limbs. Depending on the goals of the study, this approach can also allow for greater subject numbers and more statistical power in the analysis of the results. As we develop assessment tools and techniques to evaluate how peripheral nerve interfaces impact prosthesis incorporation, involving normally limbed subjects in the studies becomes challenging...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28814006/development-and-evaluation-of-a-method-to-measure-wrist-range-of-motion-on-paretic-hand-rehabilitation-device
#5
Jung-Yeon Kim, Hyun-Seok Sung, Youn-Kyung Kang, Igor Gaponov, Bong-Keun Jung
This paper presents the development of wrist ROM measurement system that was implemented on a rehabilitation glove for paretic hand, Easy-Flex, using a rotary potentiometer. This approach enables the device to measure the angles of up to 80° with the approximate resolution of 0.1°. The method along with a universal goniometer and a smartphone clinometer application were tested on 17 healthy participants in terms of reliability. The three instruments were able to accurately measure three different angles (flexion: -10°, neutral: 0°, and extension: 20°) with measurement errors less than 2(°)...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813995/a-novel-human-effort-estimation-method-for-knee-assistive-exoskeletons
#6
Lorenzo Saccares, Anais Brygo, Ioannis Sarakoglou, Nikos G Tsagarakis
In this work we present a novel method to estimate online the torques at the knee joints with the goal to generate reference signals for knee assistive devices. One of the main advantages of the proposed approach is its reduced sensing requirements, which leads to an ergonomic setup with minimal instrumentation, especially above the knee and of the upper body. Indeed, only the measurement of the forces and torques exchanged between the ground and the user's feet, the posture of the shanks, and the model of the user's shank itself are needed for the estimation of the knee torque...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813957/an-instrumented-object-for-studying-human-grasping
#7
R A Romeo, F Cordelia, A Davalli, R Sacchetti, E Guglielmelli, L Zollo
This paper proposes the use of an instrumented object for the study of the human grasping strategies. The proposed object is able to measure the grasping forces by means of three Force Sensitive Resistor (FSR) sensors and triaxial acceleration through an accelerometer. The object orientation angles (roll and pitch) can be estimated from the accelerometer output in quasi-static condition, whereas slippage events can be detected through the Power Spectrum Density (PSD) computation of the acceleration on at least one of the three axes...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813868/relationship-between-assistive-torque-and-knee-biomechanics-during-exoskeleton-walking-in-individuals-with-crouch-gait
#8
Zachary F Lerner, Diane L Damiano, Thomas C Bulea
Crouch or "flexed knee" gait is a pathological gait pattern affecting many individuals with cerebral palsy. One proposed method to alleviate crouch is to provide robotic assistance to knee extension during walking. The purpose of this study was to evaluate how the magnitude of knee extensor torque affects knee kinematics, kinetics, and muscle activity. Motion capture, ground reaction force and electromyography data were collected while four participants with crouch gait from cerebral palsy walked with assistance from a novel robotic exoskeleton on an instrumented treadmill...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813841/design-and-preliminary-evaluation-of-a-multi-robotic-system-with-pelvic-and-hip-assistance-for-pediatric-gait-rehabilitation
#9
Evelyn J Park, Jiyeon Kang, Hao Su, Paul Stegall, Daniel L Miranda, Wen-Hao Hsu, Mustafa Karabas, Nathan Phipps, Sunil K Agrawal, Eugene C Goldfield, Conor J Walsh
This paper presents a modular, computationally-distributed "multi-robot" cyberphysical system designed to assist children with developmental delays in learning to walk. The system consists of two modules, each assisting a different aspect of gait: a tethered cable pelvic module with up to 6 degrees of freedom (DOF), which can modulate the motion of the pelvis in three dimensions, and a two DOF wearable hip module assisting lower limb motion, specifically hip flexion. Both modules are designed to be lightweight and minimally restrictive to the user, and the modules can operate independently or in cooperation with each other, allowing flexible system configuration to provide highly customized and adaptable assistance...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813780/microbial-diversity-of-commercial-makgeolli-and-its-influence-on-the-organoleptic-characteristics-of-korean-rice-sourdough-jeung-pyun
#10
Jaehyung Park, Ji Sun Seo, Seul-Ah Kim, So-Yeon Shin, Jong-Hyun Park, Nam Soo Han
Sourdough is made by fermentation of dough by lactic acid bacteria (LAB) and yeast to improve bread properties like volume, flavor, and texture. A Korean traditional sourdough was made by fermenting rice flour with rice wine (makgeolli) and used to make sponge-like bread (Jeung-pyun). The aim of this study was to investigate the microbial diversity of makgeolli products and their influence on the organoleptic quality of Jeung-pyun. Three commercial makgeolli were tested for Jeung-pyun production, with each product exhibiting varied dough swelling rates and organoleptic qualities, and among them, J-product was ranked highest in texture and taste...
August 17, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28813560/prevalence-of-pubic-hair-grooming-related-injuries-and-identification-of-high-risk-individuals-in-the-united-states
#11
Matthew D Truesdale, E Charles Osterberg, Thomas W Gaither, Mohannad A Awad, Molly A Elmer-DeWitt, Siobhan Sutcliffe, Isabel Allen, Benjamin N Breyer
Importance: Pubic hair grooming is a common practice that can lead to injury and morbidity. Objective: To identify demographic and behavioral risk factors associated with pubic hair grooming-related injuries to characterize individuals with high risk of injury and develop recommendations for safe grooming practices. Design, Setting, and Participants: This cross-sectional study conducted a national survey of noninstitutionalized US adults (aged 18-65 years)...
August 16, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28813524/medical-student-nursing-student-and-non-health-care-respondents-implicit-attitudes-toward-doctors-and-patients-development-and-a-pilot-study-of-a-new-implicit-attitudes-test-iat
#12
Alan Schwartz, Abdelhamid Mazouni
INTRODUCTION: Medical educators have been concerned that medical students may decline in empathy for patients during the course of their training, based on studies measuring clinical empathy using psychometrically strong self-report measures. Clinical empathy is a complex construct, incorporating attitudes toward patients but also other components, such as professional detachment. Triangulation of extant measures with instruments based on nonreactive methods could provide a better understanding of whether and how physician attitudes toward patients may be changing during training...
2017: PloS One
https://www.readbyqxmd.com/read/28813458/joint-modelling-of-longitudinal-3ms-scores-and-the-risk-of-mortality-among-cognitively-impaired-individuals
#13
Chris B Guure, Noor Akma Ibrahim, Mohd Bakri Adam, Salmiah Md Said
BACKGROUND: Modified Mini-Mental State Examination (3MS) is an instrument administered by trained personnel to examine levels of participants' cognitive function. However, the association between changes in scores over time and the risk of death (mortality) is not known. The aims of this study are to examine the association between 3MS scores and mortality via cognitive impairment among older women and to determine individuals' risk of changes in scores to better predict their survival and mortality rates...
2017: PloS One
https://www.readbyqxmd.com/read/28813205/combining-2-commonly-adopted-nutrition-instruments-in-the-critical-care-setting-is-superior-to-administering-either-one-alone
#14
Charles Chin Han Lew, Ka Po Cheung, Mary Foong Fong Chong, Ai Ping Chua, Robert J L Fraser, Michelle Miller
BACKGROUND: This study aimed to determine the agreement between the modified Nutrition Risk in Critically ill Score (mNUTRIC) and the Subjective Global Assessment (SGA) and compare their ability in discriminating and quantifying mortality risk independently and in combination. METHODS: Between August 2015 and October 2016, all patients in a Singaporean hospital received the SGA within 48 hours of intensive care unit admission. Nutrition status was dichotomized into presence or absence of malnutrition...
August 1, 2017: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28813183/quality-of-life-in-children-with-orofacial-clefts-and-caregiver-well-being
#15
L Sischo, M Wilson-Genderson, H L Broder
Quality of life is a valid patient-reported parameter that provides an assessment of treatment need or outcomes complementary to standard clinical measures. Such patient-reported assessments are particularly salient when examining chronic conditions with prolonged treatment trajectories, such as cleft lip and palate. This critical review identifies key questions related to ongoing research on the oral health-related quality of life (OHRQoL) in children with cleft and caregiver well-being. Details of the design and results from 2 longitudinal multicenter studies are presented...
August 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28813149/quantifying-short-chain-chlorinated-paraffin-congener-groups
#16
Bo Yuan, Christian Bogdal, Urs Berger, Matthew MacLeod, Wouter A Gebbink, Tomas Alsberg, Cynthia A de Wit
Accurate quantification of short-chain chlorinated paraffins (SCCPs) poses an exceptional challenge to analytical chemists. SCCPs are complex mixtures of chlorinated alkanes with variable chain length and chlorination level; congeners with a fixed chain length (n) and number of chlorines (m) are referred to as a "congener group" CnClm. Recently, we resolved individual CnClm by mathematically deconvolving soft ionization high-resolution mass spectra of SCCP mixtures. Here we extend the method to quantifying CnClm by introducing CnClm specific response factors (RFs) that are calculated from 17 SCCP chain-length standards with a single carbon chain length and variable chlorination level...
August 16, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28813086/translation-and-validation-of-the-life-satisfaction-index-for-adolescents-scale-with-neuromuscular-disorders-lsi-a-brazil
#17
Valdecir Antonio Simon, Edmar Zanoteli, Margarete Andreozzi Vaz Pereira Simon, Maria Bernadete Dutra de Resende, Umbertina Conti Reed
Objective: To validate the Life Satisfaction Index for Adolescents (LSI-A) scale, parent version and patient version, for Duchenne muscular dystrophy (DMD), spinal muscular atrophy (SMA) and limb-girdle muscular dystrophy (LGMD). Methods: The parent version of the instrument was divided into Groups A, B, C and D; and the patient version, divided into B, C and D. For the statistical calculation, the following tests were used: Cronbach's α, ICC, Pearson and the ROC Curve...
August 2017: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/28813075/violence-in-schools-and-the-voice-of-teachers
#18
Rodrigo Dornelas, Thaynara Alves Dos Santos, Daniela Sena de Oliveira, Roxane de Alencar Irineu, Aline Brito, Kelly Silva
Purpose: To correlate self-reporting of voice disorders with habits that impact voice production and situations of violence experienced by teachers. Methods: The study involved 41 elementary-school teachers of rural and urban areas. Two instruments were used for data collection: The Vocal Production Condition - Teacher (CPV-P) questionnaire and the Screening Index for Voice Disorders - ITDV. The chi-square test was used to verify association among variables with a significance level of 5%...
August 10, 2017: CoDAS
https://www.readbyqxmd.com/read/28813073/functional-health-literacy-and-quality-of-life-of-high-school-adolescents-in-state-schools-in-belo-horizonte
#19
Poliana Cristina Rocha, Dálian Cristina Rocha, Stela Maris Aguiar Lemos
Purpose: To investigate the association between functional health literacy and sociodemographic factors, quality of life, self-perception of health, and perception of contexts of violence in adolescents in state schools in Belo Horizonte. Methods: This is a cross-sectional analytical observational study with a probabilistic sample of 384 adolescents between 15 and 19 years old. Data collection was carried out in schools and included self-reporting questionnaires to assess the functional health literacy, socioeconomic classification, self-perceived health, and quality of life...
August 10, 2017: CoDAS
https://www.readbyqxmd.com/read/28813071/content-validation-clarity-relevance-reliability-and-internal-consistency-of-enunciative-signs-of-language-acquisition
#20
Anelise Henrich Crestani, Anaelena Bragança de Moraes, Ana Paula Ramos de Souza
Purpose: To analyze the results of the validation of building enunciative signs of language acquisition for children aged 3 to 12 months. Methods: The signs were built based on mechanisms of language acquisition in an enunciative perspective and on clinical experience with language disorders. The signs were submitted to judgment of clarity and relevance by a sample of six experts, doctors in linguistic in with knowledge of psycholinguistics and language clinic. In the validation of reliability, two judges/evaluators helped to implement the instruments in videos of 20% of the total sample of mother-infant dyads using the inter-evaluator method...
August 10, 2017: CoDAS
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