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https://www.readbyqxmd.com/read/28629415/kaps-kinematic-assessment-of-passive-stretch-a-tool-to-assess-elbow-flexor-and-extensor-spasticity-after-stroke-using-a-robotic-exoskeleton
#1
Andrew Centen, Catherine R Lowrey, Stephen H Scott, Ting-Ting Yeh, George Mochizuki
BACKGROUND: Spasticity is a common sequela of stroke. Traditional assessment methods include relatively coarse scales that may not capture all characteristics of elevated muscle tone. Thus, the aim of this study was to develop a tool to quantitatively assess post-stroke spasticity in the upper extremity. METHODS: Ninety-six healthy individuals and 46 individuals with stroke participated in this study. The kinematic assessment of passive stretch (KAPS) protocol consisted of passive elbow stretch in flexion and extension across an 80° range in 5 movement durations...
June 19, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28627770/electrochemically-powered-energy-conserving-carbon-nanotube-artificial-muscles
#2
Jae Ah Lee, Na Li, Carter S Haines, Keon Jung Kim, Xavier Lepró, Raquel Ovalle-Robles, Seon Jeong Kim, Ray H Baughman
While artificial muscle yarns and fibers are potentially important for many applications, the combination of large strokes, high gravimetric work capacities, short cycle times, and high efficiencies are not realized for these fibers. This paper demonstrates here electrochemically powered carbon nanotube yarn muscles that provide tensile contraction as high as 16.5%, which is 12.7 times higher than previously obtained. These electrochemical muscles can deliver a contractile energy conversion efficiency of 5...
June 19, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28626427/distinctive-steady-state-heart-rate-and-blood-pressure-responses-to-passive-robotic-leg-exercise-during-head-up-tilt-a-pilot-study-in-neurological-patients
#3
Amirehsan Sarabadani Tafreshi, Robert Riener, Verena Klamroth-Marganska
Introduction: Robot-assisted tilt table therapy was proposed for early rehabilitation and mobilization of patients after diseases such as stroke. A robot-assisted tilt table with integrated passive robotic leg exercise (PE) mechanism has the potential to prevent orthostatic hypotension usually provoked by verticalization. In a previous study with rather young healthy subjects [average age: 25.1 ± 2.6 years (standard deviation)], we found that PE effect on the cardiovascular system depends on the verticalization angle of the robot-assisted tilt table...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28626337/is-robot-assisted-therapy-effective-in-upper-extremity-recovery-in-early-stage-stroke-a-systematic-literature-review
#4
REVIEW
GaYeong Kim, SeungYeop Lim, HyunJong Kim, ByungJoon Lee, SeungChul Seo, KiHun Cho, WanHee Lee
[Purpose] The aim of this study was to systematically investigate the effects of robot-assisted therapy on the upper extremity in acute and subacute stroke patients. [Subjects and Methods] The papers retrieved were evaluated based on the following inclusion criteria: 1) design: randomized controlled trials; 2) population: stroke patients 3) intervention: robot-assisted therapy; and 4) year of publication: May 2012 to April 2016. Databased searched were: EMBASE, PubMed and COCHRAN databases. The Physiotherapy Evidence Database (PEDro) scale was used to assess the methodological quality of the included studies...
June 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28613178/biomechanical-reactions-of-exoskeleton-neurorehabilitation-robots-in-spastic-elbows-and-wrists
#5
Hyung Seok Nam, Sukgyu Koh, Yoon Jae Kim, Jaewon Beom, Woo Hyung Lee, Shi-Uk Lee, Sungwan Kim
Spasticity is an important factor in designing wearable and lightweight exoskeleton neurorehabilitation robots. The proposed study evaluates biomechanical reactions of an exoskeleton robot to spasticity and establishes relevant guidelines for robot design. A two-axis exoskeleton robot is used to evaluate a group of 20 patients post-stroke with spastic elbow and/or wrist joints. All subjects are given isokinetic movements at various angular velocities within the capable range of motion for both joints. The resistance torque and corresponding angular position at each joint are recorded continuously...
June 9, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28606179/modifying-upper-limb-inter-joint-coordination-in-healthy-subjects-by-training-with-a-robotic-exoskeleton
#6
Tommaso Proietti, Emmanuel Guigon, Agnès Roby-Brami, Nathanaël Jarrassé
BACKGROUND: The possibility to modify the usually pathological patterns of coordination of the upper-limb in stroke survivors remains a central issue and an open question for neurorehabilitation. Despite robot-led physical training could potentially improve the motor recovery of hemiparetic patients, most of the state-of-the-art studies addressing motor control learning, with artificial virtual force fields, only focused on the end-effector kinematic adaptation, by using planar devices...
June 12, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28603359/exercising-daily-living-activities-in-robot-mediated-therapy
#7
Orsolya Peter, Ibolya Tavaszi, Andras Toth, Gabor Fazekas
[Purpose] Investigation of the efficacy of robot-mediated therapy of the upper limb in patients with chronic stroke, in task-oriented training activities of daily living in real environment. [Subjects and Methods] 20 patients, each more than one year post-stroke (13-71 months) received 20 sessions of upper limb robot-mediated therapy. No other treatment was given. Each therapy session consisted of a passive motion and an active task therapy. During the active therapy, subjects exercised 5 activities of daily living...
May 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28597018/robotic-devices-and-brain-machine-interfaces-for-hand-rehabilitation-post-stroke
#8
Alistair C McConnell, Renan C Moioli, Fabricio L Brasil, Marta Vallejo, David W Corne, Patricia A Vargas, Adam A Stokes
OBJECTIVE: To review the state of the art of robotic-aided hand physiotherapy for post-stroke rehabilitation, including the use of brain-machine interfaces. Each patient has a unique clinical history and, in response to personalized treatment needs, research into individualized and at-home treatment options has expanded rapidly in recent years. This has resulted in the development of many devices and design strategies for use in stroke rehabilitation. METHODS: The development progression of robotic-aided hand physiotherapy devices and brain-machine interface systems is outlined, focussing on those with mechanisms and control strategies designed to improve recovery outcomes of the hand post-stroke...
June 8, 2017: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28592282/the-role-of-virtual-reality-in-improving-motor-performance-as-revealed-by-eeg-a-randomized-clinical-trial
#9
Rocco Salvatore Calabrò, Antonino Naro, Margherita Russo, Antonino Leo, Rosaria De Luca, Tina Balletta, Antonio Buda, Gianluca La Rosa, Alessia Bramanti, Placido Bramanti
BACKGROUND: Many studies have demonstrated the usefulness of repetitive task practice by using robotic-assisted gait training (RAGT) devices, including Lokomat, for the treatment of lower limb paresis. Virtual reality (VR) has proved to be a valuable tool to improve neurorehabilitation training. The aim of our pilot randomized clinical trial was to understand the neurophysiological basis of motor function recovery induced by the association between RAGT (by using Lokomat device) and VR (an animated avatar in a 2D VR) by studying electroencephalographic (EEG) oscillations...
June 7, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28588467/literature-review-on-the-effects-of-tdcs-coupled-with-robotic-therapy-in-post-stroke-upper-limb-rehabilitation
#10
REVIEW
Davide Simonetti, Loredana Zollo, Stefano Milighetti, Sandra Miccinilli, Marco Bravi, Federico Ranieri, Giovanni Magrone, Eugenio Guglielmelli, Vincenzo Di Lazzaro, Silvia Sterzi
Today neurological diseases such as stroke represent one of the leading cause of long-term disability. Many research efforts have been focused on designing new and effective rehabilitation strategies. In particular, robotic treatment for upper limb stroke rehabilitation has received significant attention due to its ability to provide high-intensity and repetitive movement therapy with less effort than traditional methods. In addition, the development of non-invasive brain stimulation techniques such as transcranial Direct Current Stimulation (tDCS) has also demonstrated the capability of modulating brain excitability thus increasing motor performance...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28580370/robotic-assist-as-needed-as-an-alternative-to-therapist-assisted-gait-rehabilitation
#11
Shraddha Srivastava, Pei Chun Kao, Darcy S Reisman, John P Scholz, Sunil K Agrawal, Jill S Higginson
OBJECTIVE: Body Weight Supported Treadmill Training (BWSTT) with therapists' assistance is often used for gait rehabilitation post-stroke. However, this training method is labor-intensive, requiring at least one or as many as three therapists at once for manual assistance. Previously, we demonstrated that providing movement guidance using a performance-based robot-aided gait training (RAGT) that applies a compliant, assist-as-needed force-field improves gait pattern and functional walking ability in people post-stroke...
October 2016: International Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28575054/hemorrhagic-versus-ischemic-stroke-who-can-best-benefit-from-blended-conventional-physiotherapy-with-robotic-assisted-gait-therapy
#12
Frédéric Dierick, Mélanie Dehas, Jean-Luc Isambert, Soizic Injeyan, Anne-France Bouché, Yannick Bleyenheuft, Sigal Portnoy
BACKGROUND: Contrary to common belief of clinicians that hemorrhagic stroke survivors have better functional prognoses than ischemic, recent studies show that ischemic survivors could experience similar or even better functional improvements. However, the influence of stroke subtype on gait and posture outcomes following an intervention blending conventional physiotherapy with robotic-assisted gait therapy is missing. OBJECTIVE: This study compared gait and posture outcome measures between ambulatory hemorrhagic patients and ischemic patients, who received a similar 4 weeks' intervention blending a conventional bottom-up physiotherapy approach and an exoskeleton top-down robotic-assisted gait training (RAGT) approach with Lokomat...
2017: PloS One
https://www.readbyqxmd.com/read/28566678/the-relation-between-human-hair-follicle-density-and-touch-perception
#13
Emma H Jönsson, Johanna Bendas, Kerstin Weidner, Johan Wessberg, Håkan Olausson, Helena Backlund Wasling, Ilona Croy
Unmyelinated low threshold C-tactile fibers moderate pleasant aspects of touch. These fibers respond optimally to stroking stimulation of the skin with slow velocities (1-10 cm/s). Low threshold mechanoreceptors are arranged around hair follicles in rodent skin. If valid also in humans, hair follicle density (HFD) may relate to the perceived pleasantness of stroking tactile stimulation. We conducted two studies that examined the relation between HFD and affective touch perception in humans. In total, 138 healthy volunteers were stroked on the forearm and rated the pleasantness and intensity...
May 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28558314/flexion-synergy-overshadows-flexor-spasticity-during-reaching-in-chronic-moderate-to-severe-hemiparetic-stroke
#14
Michael D Ellis, Ingrid Schut, Julius P A Dewald
OBJECTIVE: Pharmaceutical intervention targets arm flexor spasticity with an often-unsuccessful goal of improving function. Flexion synergy is a related motor impairment that may be inadvertently neglected. Here, flexor spasticity and flexion synergy are disentangled to determine their contributions to reaching dysfunction. METHODS: Twenty-six individuals participated. A robotic device systematically modulated shoulder abduction loading during ballistic reaching...
July 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28556875/nonpharmacological-treatments-for-post-stroke-depression-an-integrative-review-of-the-literature
#15
Niloufar Niakosari Hadidi, Roberta L Huna Wagner, Ruth Lindquist
Stroke is the fifth leading cause of death and the number one cause of long-term disability. Seventy-five percent of annual stroke victims are older than 65. Post-stroke depression (PSD) is a common consequence of stroke, with the estimated prevalence ranging from 25% to 79%. Although several studies have investigated the impact of pharmacological interventions on PSD, there is a significant gap in knowledge regarding the efficacy of nonpharmacological measures for treatment of PSD. The purpose of the current integrative literature review was to synthesize the state of knowledge on selected nonpharmacological treatments for PSD and present findings regarding the efficacy of investigated treatments...
May 30, 2017: Research in Gerontological Nursing
https://www.readbyqxmd.com/read/28553200/phase-ii-clinical-validation-of-a-powered-exoskeleton-for-the-treatment-of-elbow-spasticity
#16
Simona Crea, Marco Cempini, Stefano Mazzoleni, Maria Chiara Carrozza, Federico Posteraro, Nicola Vitiello
Introduction: Spasticity is a typical motor disorder in patients affected by stroke. Typically post-stroke rehabilitation consists of repetition of mobilization exercises on impaired limbs, aimed to reduce muscle hypertonia and mitigate spastic reflexes. It is currently strongly debated if the treatment's effectiveness improves with the timeliness of its adoption; in particular, starting intensive rehabilitation as close as possible to the stroke event may counteract the growth and postpone the onset of spasticity...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28553117/robot-assisted-gait-training-for-stroke-patients-current-state-of-the-art-and-perspectives-of-robotics
#17
REVIEW
Giovanni Morone, Stefano Paolucci, Andrea Cherubini, Domenico De Angelis, Vincenzo Venturiero, Paola Coiro, Marco Iosa
In this review, we give a brief outline of robot-mediated gait training for stroke patients, as an important emerging field in rehabilitation. Technological innovations are allowing rehabilitation to move toward more integrated processes, with improved efficiency and less long-term impairments. In particular, robot-mediated neurorehabilitation is a rapidly advancing field, which uses robotic systems to define new methods for treating neurological injuries, especially stroke. The use of robots in gait training can enhance rehabilitation, but it needs to be used according to well-defined neuroscientific principles...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28542076/comparative-analysis-of-perioperative-and-mid-term-results-of-tecab-and-midcab-for-revascularization-of-anterior-wall
#18
Markus Kofler, Thomas Schachner, Sebastian J Reinstadler, Lukas Stastny, Julia Dumfarth, Dominik Wiedemann, Gudrun Feuchtner, Guy Friedrich, Johannes Bonatti, Nikolaos Bonaros
OBJECTIVE: Totally endoscopic coronary artery bypass (TECAB) and minimally invasive direct coronary artery bypass (MIDCAB) grafting through minithoracotomy are currently the two minimally invasive surgical techniques of left ventricular anterior wall revascularization. We aimed to compare both techniques in terms of perioperative and mid-term results. METHODS: Arrested heart TECAB was carried out in 204 patients with a median (range) age of 60 (53-76) years and a median (range) EuroSCORE I of 2 (0-3)...
May 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/28540536/effects-of-robot-assisted-upper-limb-rehabilitation-in-stroke-patients-a-systematic-review-with-meta-analysis
#19
Rachele Bertani, Corrado Melegari, Maria C De Cola, Alessia Bramanti, Placido Bramanti, Rocco Salvatore Calabrò
Technology-supported training is emerging as a solution to support therapists in their efforts providing high-intensity, repetitive, and task-specific treatment, in order to enhance the recovery process. The aim of this review is to assess the effectiveness of different robotic devices (end-effector and exoskeleton robots) in comparison with any other type of intervention. Furthermore, we aim to assess whether or not better improvements are obtained in the sub-acute phase after stroke onset than in the chronic phase...
May 24, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28532512/inter-rater-reliability-of-kinesthetic-measurements-with-the-kinarm-robotic-exoskeleton
#20
Jennifer A Semrau, Troy M Herter, Stephen H Scott, Sean P Dukelow
BACKGROUND: Kinesthesia (sense of limb movement) has been extremely difficult to measure objectively, especially in individuals who have survived a stroke. The development of valid and reliable measurements for proprioception is important to developing a better understanding of proprioceptive impairments after stroke and their impact on the ability to perform daily activities. We recently developed a robotic task to evaluate kinesthetic deficits after stroke and found that the majority (~60%) of stroke survivors exhibit significant deficits in kinesthesia within the first 10 days post-stroke...
May 22, 2017: Journal of Neuroengineering and Rehabilitation
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