69,896 results match your criteria limb movement


First-time anterior cruciate ligament injury in adolescent female elite athletes: a prospective cohort study to identify modifiable risk factors.

Knee Surg Sports Traumatol Arthrosc 2021 May 7. Epub 2021 May 7.

Human Movement Analysis Laboratory, Department of Orthopedic Surgery, Copenhagen University Hospital, Amager-Hvidovre, Hvidovre, Denmark.

Purpose: To identify modifiable biomechanical and neuromuscular anterior cruciate ligament (ACL) injury risk factors for first-time ACL injury in adolescent female elite football and team handball players.

Methods: Adolescent female elite football and handball players with no previous ACL injury participated in the present study. At baseline, players were tested during side-cutting manoeuvres performed in a 3-dimensional motion analysis laboratory with concomitant electromyography (EMG) measurements. Read More

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Pedicle screw system reconstruction in shoulder resection type IV-total scapulectomy: A case report and short term follow up.

Int J Surg Case Rep 2021 Apr 27;82:105899. Epub 2021 Apr 27.

Department of Orthopaedic and Traumatology, Faculty of Medicine, Universitas Indonesia, Dr. Cipto Mangunkusumo National Central General Hospital, Jakarta, Indonesia. Electronic address:

Introduction: Shoulder resection remains a challenging procedure after scapulectomy for tumour resection. The results have various functional outcome, wound coverage, and cosmetic aspect. In this case report, we reported the outcome of pedicle screw application after scapulectomy procedure within 1 month follow up after surgical tumour excision. Read More

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An integrated deep learning model for motor intention recognition of multi-class EEG Signals in upper limb amputees.

Comput Methods Programs Biomed 2021 Apr 21;206:106121. Epub 2021 Apr 21.

Key Laboratory of Human-Machine Intelligence-Synergy Systems, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China; Shenzhen College of Advanced Technology, University of Chinese Academy of Sciences, Shenzhen 518055, China; Shenzhen Engineering Laboratory of Neural Rehabilitation Technology, Shenzhen 518055, China. Electronic address:

Background And Objective: Recognition of motor intention based on electroencephalogram (EEG) signals has attracted considerable research interest in the field of pattern recognition due to its notable application of non-muscular communication and control for those with severe motor disabilities. In analysis of EEG data, achieving a higher classification performance is dependent on the appropriate representation of EEG features which is mostly characterized by one unique frequency before applying a learning model. Neglecting other frequencies of EEG signals could deteriorate the recognition performance of the model because each frequency has its unique advantages. Read More

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A Spatio-temporal Attention-based Model for Infant Movement Assessment from Videos.

IEEE J Biomed Health Inform 2021 May 6;PP. Epub 2021 May 6.

The absence or abnormality of fidgety movements of joints or limbs is strongly indicative of cerebral palsy in infants. Developing computer-based methods for assessing infant movements in videos is pivotal for improved cerebral palsy screening. Most existing methods use appearance-based features and are thus sensitive to strong but irrelevant signals caused by background clutter or a moving camera. Read More

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Detecting Sensitive Mobility Features for Parkinson's Disease Stages Via Machine Learning.

Mov Disord 2021 May 6. Epub 2021 May 6.

Laboratory for Early Markers Of Neurodegeneration (LEMON), Center for the Study of Movement, Cognition and Mobility, Neurological Institute, Tel Aviv Medical Center, Tel Aviv, Israel.

Background: It is not clear how specific gait measures reflect disease severity across the disease spectrum in Parkinson's disease (PD).

Objective: To identify the gait and mobility measures that are most sensitive and reflective of PD motor stages and determine the optimal sensor location in each disease stage.

Methods: Cross-sectional wearable-sensor records were collected in 332 patients with PD (Hoehn and Yahr scale I-III) and 100 age-matched healthy controls. Read More

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Attention directed to proprioceptive stimulation alters its cortical processing in the primary sensorimotor cortex.

Eur J Neurosci 2021 May 6. Epub 2021 May 6.

Faculty of Sport and Health Sciences, University of Jyväskylä, P.O. BOX 35, FI-40014, Jyväskylä, Finland.

Movement-evoked fields to passive movements and corticokinematic coherence between limb kinematics and magnetoencephalographic signals can both be used to quantify the degree of cortical processing of proprioceptive afference. We examined in 20 young healthy volunteers whether processing of proprioceptive afference in the primary sensorimotor cortex is modulated by attention directed to the proprioceptive stimulation of the right index finger using a pneumatic-movement actuator to evoke continuous 3-Hz movement for 12-min. The participant attended either to a visual (detected change of fixation cross colour) or movement (detected missing movements) events. Read More

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Proprioception and the predictive sensing of active self-motion.

Curr Opin Physiol 2021 Apr 22;20:29-38. Epub 2021 Jan 22.

Department of Biomedical Engineering, McGill University, Montréal, Canada.

As we actively explore the environment, our motion relative to the world stimulates numerous sensory systems. Notably, proprioceptors provide feedback about body and limb position, while the vestibular system detects and encodes head motion. When the vestibular system is functioning normally, we are unaware of a distinct sensation because vestibular information is integrated with proprioceptive and other sensory inputs to generate our sense of motion. Read More

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Prospective cohort study comparing a triceps-sparing and triceps-detaching approach in total elbow arthroplasty: a protocol.

BMJ Open 2021 May 5;11(5):e046098. Epub 2021 May 5.

Department of Orthopedic Surgery, University Medical Center Groningen, Groningen, The Netherlands.

Background: New surgical approaches have been developed to optimise elbow function after total elbow arthroplasty (TEA). Currently, there is no consensus on the best surgical approach. This study aims to investigate the functional outcomes, prosthetic component position and complication rates after a triceps-sparing and a triceps-detaching approach in TEA. Read More

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Partial Trapeziotrapezoid Resection and Thumb Range of Movement After Trapeziometacarpal Joint Fusion-A Biomechanical Study.

J Hand Surg Am 2021 May 2. Epub 2021 May 2.

Department of Orthopedic Surgery, Nara Medical University, Nara, Japan.

Purpose: Trapeziometacarpal (TMC) joint arthrodesis is an effective treatment for stage III osteoarthritis. Although this procedure alleviates thumb pain and restores grip power and pinch strength, persistent limitation of thumb movement is inevitable. This biomechanical study aimed to investigate the altered kinematics of thumb circumduction motion after TMC joint arthrodesis and subsequent excision of the trapeziotrapezoid (TT) and trapezio-second metacarpal (T-2MC) joint spaces. Read More

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Short-latency inhibition mitigates the relationship between conscious movement processing and overly cautious gait.

Age Ageing 2021 May;50(3):830-837

School of Sport and Health Sciences, University of Exeter, UK.

Background: Overly cautious gait is common in older adults. This is characterised by excessively slow gait, shortened steps, broadened base of support and increased double limb support. The current study sought to (1) evaluate if overly cautious gait is associated with attempts to consciously process walking movements, and (2) explore whether an individual's ability to rapidly inhibit a dominant motor response serves to mitigate this relationship. Read More

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Comparisons between Locomat and Walkbot robotic gait training regarding balance and lower extremity function among non-ambulatory chronic acquired brain injury survivors.

Medicine (Baltimore) 2021 May;100(18):e25125

TBI rehabilitation center, National Traffic Injury Rehabilitation Hospital, Gyeonggi-do.

Abstract: Lower limb rehabilitation exoskeleton robots connect with the human body in a wearable way and control the movement of joints in the gait rehabilitation process. Among treadmill-based lower limb rehabilitation exoskeleton robots, Lokomat (Hocoma AG, Volketswil, Switzerland) has 4 actuated joints for bilateral hips and knees whereas Walkbot (P&S Mechanics, Seoul, Korea) has 6 bilateral actuated joints for bilateral hips, knees, and ankles. Lokomat and Walkbot robotic gait training systems have not been directly compared previously. Read More

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Aberrant activity in an intact residual muscle is associated with phantom limb pain in above-knee amputees.

J Neurophysiol 2021 May 5. Epub 2021 May 5.

Moss Rehabilitation Research Institute, Elkins Park, PA, United States.

Many individuals who undergo limb amputation experience persistent phantom limb pain (PLP), but the underlying mechanisms of PLP are unknown. The traditional hypothesis was that PLP resulted from maladaptive plasticity in sensorimotor cortex that degrades the neural representation of the missing limb. However, a recent study of individuals with upper limb amputations has shown that PLP is correlated with aberrant electromyographic (EMG) activity in residual muscles, posited to reflect a retargeting of efferent projections from a preserved representation of a missing limb. Read More

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Exergaming as a Functional Test Battery in Patients Who Received Arthroscopic Ankle Arthrodesis: Cross-sectional Pilot Study.

JMIR Rehabil Assist Technol 2021 May 5;8(2):e21924. Epub 2021 May 5.

Zuyderland Medical Centre, Sittard, Netherlands.

Background: Recently, movement-based videogames (exergames) have gained popularity in improving the rehabilitation process after surgery. During exergaming, participants are physically challenged as the game component stimulates adherence to the training program. There is no literature on the effect of exergame training interventions in patients who received arthroscopic ankle arthrodesis. Read More

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Factors Associated With Lower Limb Injuries in Recreational Runners: A Cross-Sectional Survey Including Mental Aspects and Sleep Quality.

J Sports Sci Med 2021 Jun 5;20(2):204-215. Epub 2021 Mar 5.

University of Groningen, University Medical Center Groningen, Center for Human Movement Science, The Netherlands.

Knowledge about prevalence and etiology of running-related injuries (RRIs) is important to design effective RRI prevention programs. Mental aspects and sleep quality seem to be important potential risk factors, yet their association with RRIs needs to be elucidated. The aims of this study are to investigate the epidemiology of RRIs in recreational runners and the association of mental aspects, sleep, and other potential factors with RRIs. Read More

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Comparison of Muscle Activity in Three Single-Joint, Hip Extension Exercises in Resistance-Trained Women.

J Sports Sci Med 2021 Jun 5;20(2):181-187. Epub 2021 Mar 5.

Faculty of Education, Arts and Sports, Western Norway University of Applied Sciences, Norway.

The aim of the study was to compare neuromuscular activation in the gluteus maximus, the biceps femoris and the erector spinae from the Romanian deadlift, the 45-degree Roman chair back extension and the seated machine back extension. Fifteen resistance-trained females performed three repetitions with 6-RM loading in all exercises in a randomized and counterbalanced order. The activation in the whole movement as well as its lower and upper parts were analyzed. Read More

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Robotic-assisted gait rehabilitation following stroke: a systematic review of current guidelines and practical clinical recommendations.

Eur J Phys Rehabil Med 2021 May 5. Epub 2021 May 5.

Rehabilitation Unit, ULSS (Local Health Authority) Euganea - Camposampiero Hospital, Padua, Italy.

Introduction: Stroke is the third leading cause of adult disability world-wide, and lower extremity motor impairment is one of the major determinants of long-term disability. Although robotic therapy is becoming more and more utilized in research protocols for lower limb stroke rehabilitation, the gap between research evidence and its use in clinical practice is still significant. The aim of this study was to determine the scope, quality, and consistency of guidelines for robotic lower limb rehabilitation after stroke, in order to provide clinical recommendations. Read More

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Combined clinic and home-based therapeutic approach for the treatment of bilateral radial deficiency for a young child with Holt-Oram syndrome: A case report.

J Hand Ther 2021 Mar 6. Epub 2021 Mar 6.

NYU Langone Health Rusk Rehabilitation, New York, NY, USA. Electronic address:

Background: Holt-Oram syndrome (HOS) is a rare, genetic condition characterized by the combination of congenital heart defect and hypoplasia in one or both upper extremities. Children with HOS commonly present with varied joint and limb involvement including radial longitudinal deficiency impacting hand function. Evidence-based guidelines regarding orthotic wear and therapeutic techniques are lacking. Read More

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Estimation of 3D Body Center of Mass Acceleration and Instantaneous Velocity from a Wearable Inertial Sensor Network in Transfemoral Amputee Gait: A Case Study.

Sensors (Basel) 2021 Apr 30;21(9). Epub 2021 Apr 30.

Institut de Biomécanique Humaine Georges Charpak, Arts et Métiers, 151 Boulevard de l'Hôpital, 75013 Paris, France.

The analysis of the body center of mass (BCoM) 3D kinematics provides insights on crucial aspects of locomotion, especially in populations with gait impairment such as people with amputation. In this paper, a wearable framework based on the use of different magneto-inertial measurement unit (MIMU) networks is proposed to obtain both BCoM acceleration and velocity. The proposed framework was validated as a proof of concept in one transfemoral amputee against data from force plates (acceleration) and an optoelectronic system (acceleration and velocity). Read More

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Efficacy of lateral stair walking training in patients with chronic stroke: A pilot randomized controlled study.

Gait Posture 2021 Apr 20;88:10-15. Epub 2021 Apr 20.

Department of Physical Medicine and Rehabilitation, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan. Electronic address:

Background: Patients with chronic stroke have reduced capacity for performing activities of daily living (ADLs) and are at increased risk for falls during walking due to long-term changes to muscle tone and force, as well as movement control.

Research Question: To investigate the efficacy of lateral stair walking training on muscle strength of affected lower extremities, balance, ADLs, and gait ability in patients with chronic stroke.

Methods: The experimental group received 15 min of lateral stair walking exercise along with 15 min of traditional physiotherapy, whereas the control group received only traditional physiotherapy for 30 min. Read More

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Muscle co-contraction in an upper limb musculoskeletal model: EMG-assisted vs. standard load-sharing.

Comput Methods Biomech Biomed Engin 2020 Oct 14:1-14. Epub 2020 Oct 14.

Laboratory of Biomechanical Orthopedics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.

Estimation of muscle forces in over-actuated musculoskeletal models involves optimal distributions of net joint moments among muscles by a standard load-sharing scheme (SLS). Given that co-contractions of antagonistic muscles are counterproductive in the net joints moments, SLS might underestimate the co-contractions. Muscle co-contractions play crucial roles in stability of the glenohumeral (GH) joint. Read More

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October 2020

Does Cathodal vs. Sham Transcranial Direct Current Stimulation Over Contralesional Motor Cortex Enhance Upper Limb Motor Recovery Post-stroke? A Systematic Review and Meta-analysis.

Front Neurol 2021 15;12:626021. Epub 2021 Apr 15.

Heart and Stroke Foundation Canadian Partnership for Stroke Recovery, Sunnybrook Research Institute, Toronto, ON, Canada.

During recovery from stroke, the contralesional motor cortex (M1) may undergo maladaptive changes that contribute to impaired interhemispheric inhibition (IHI). Transcranial direct current stimulation (tDCS) with the cathode over contralesional M1 may inhibit this maladaptive plasticity, normalize IHI, and enhance motor recovery. The objective of this systematic review and meta-analysis was to evaluate available evidence to determine whether cathodal tDCS on contralesional M1 enhances motor re-learning or recovery post-stroke more than sham tDCS. Read More

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Multifractal Dynamics in Executive Control When Adapting to Concurrent Motor Tasks.

Authors:
Laurent M Arsac

Front Physiol 2021 16;12:662076. Epub 2021 Apr 16.

Université de Bordeaux, CNRS, Laboratoire IMS, UMR 5218, Talence, France.

There is some evidence that an improved understanding of executive control in the human movement system could be gained from explorations based on scale-free, fractal analysis of cyclic motor time series. Such analyses capture non-linear fractal dynamics in temporal fluctuations of motor instances that are believed to reflect how executive control enlist a coordination of multiple interactions across temporal scales between the brain, the body and the task environment, an essential architecture for adaptation. Here by recruiting elite rugby players with high motor skills and submitting them to the execution of rhythmic motor tasks involving legs and arms concurrently, the main attempt was to build on the multifractal formalism of movement control to show a marginal need of effective adaptation in concurrent tasks, and a preserved adaptability despite complexified motor execution. Read More

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Detection of passive movement in lower limb joints is impaired in individuals with Parkinson's disease.

Neurophysiol Clin 2021 Apr 29. Epub 2021 Apr 29.

Institute of Biosciences, São Paulo State University, Rio Claro, SP, Brazil. Electronic address:

Objective: Sensory information is crucial when performing daily activities, and Parkinson's disease may diminish sensitivity to sensory cues. This study aimed to examine the detection threshold of passive motion of knee and ankle joints in individuals with Parkinson's disease.

Methods: Eighteen individuals in the early stages of idiopathic Parkinson's disease (age: 62. Read More

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Polysomnographic nighttime features of narcolepsy: A systematic review and meta-analysis.

Sleep Med Rev 2021 Apr 5;58:101488. Epub 2021 Apr 5.

Sleep Medicine Center, Department of Respiratory and Critical Care Medicine, Mental Health Center, Translational Neuroscience Center, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China. Electronic address:

Polysomnographic studies have been conducted to explore nighttime sleep features in narcolepsy, but their relationship to narcolepsy is still imperfectly understood. We conducted a systematic review of the literature exploring polysomnographic differences between narcolepsy patients and healthy controls (HCs) in EMBASE, MEDLINE, All EBM databases, CINAHL, and PsycINFO. 108 studies were identified for this review, 105 of which were used for meta-analysis. Read More

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Myoelectric prosthesis users and non-disabled individuals wearing a simulated prosthesis exhibit similar compensatory movement strategies.

J Neuroeng Rehabil 2021 May 1;18(1):72. Epub 2021 May 1.

Department of Biomedical Engineering, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada.

Background: Research studies on upper limb prosthesis function often rely on the use of simulated myoelectric prostheses (attached to and operated by individuals with intact limbs), primarily to increase participant sample size. However, it is not known if these devices elicit the same movement strategies as myoelectric prostheses (operated by individuals with amputation). The objective of this study was to address the question of whether non-disabled individuals using simulated prostheses employ the same compensatory movements (measured by hand and upper body kinematics) as individuals who use actual myoelectric prostheses. Read More

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Effect of aerobic exercise on functional capacity and quality of life in individuals with Parkinson's disease: A systematic review of randomized controlled trials.

Arch Gerontol Geriatr 2021 Apr 20;95:104422. Epub 2021 Apr 20.

Federal University of Alfenas, Physical Therapy Department, Cardiorrespiratory Laboratory, Alfenas/MG, Brazil.

Objectives: To investigate the effect of aerobic exercise (AE) on functional capacity and quality of life in individuals with Parkinson's disease (PD) in the mild to moderate stages.

Data Sources: Medline, Embase, Web of Science, The Cochrane Library, Lilacs and PEDro were searched from inception until January 2021 using the MeSH terms.

Study Selection: Studies conducted in individuals with PD involving AE compared to a control group were included. Read More

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Efficacy and time course of acute intermittent hypoxia effects in the upper extremities of people with cervical spinal cord injury.

Exp Neurol 2021 Apr 28:113722. Epub 2021 Apr 28.

Shirley Ryan Ability Lab, Northwestern University, Chicago, IL 60611, United States of America; Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL 60611, United States of America.

Spinal cord injuries (SCI) disrupt neural pathways between the brain and spinal cord, causing impairment of motor function and loss of independent mobility. Spontaneous plasticity in spared neural pathways improves function but is often insufficient to restore normal function. One unique approach to augment plasticity in spinal synaptic pathways is acute intermittent hypoxia (AIH), meaning brief exposure to mild bouts of low oxygen, interspersed with normoxia. Read More

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Investigation of how accurately individuals with hemiparetic stroke can mirror their forearm positions.

PLoS One 2021 30;16(4):e0250868. Epub 2021 Apr 30.

Department of Physical Therapy and Human Movement Sciences, Northwestern University, Chicago, Illinois, United States of America.

Current literature suggests that greater than 50% of survivors of a stroke cannot accurately perceive where their upper extremity is positioned. Our recent work demonstrates that the extent to which this perception is affected can depend on how the task is performed. For example, individuals with stroke who have a deficit in mirroring the position of their passively-placed paretic forearm during a between-arms task may accurately reproduce the position of their actively-controlled paretic forearm during a single-arm task. Read More

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Forearm Volume Changes Estimated by Photo-Plethysmography During an Original Candlestick/Prayer Maneuver in Patients With Suspected Thoracic Outlet Syndrome.

Front Physiol 2021 13;12:652456. Epub 2021 Apr 13.

Vascular Medicine, University Hospital, Angers, France.

Hemodynamic investigations in thoracic outlet syndrome (TOS) remain difficult, even in trained hands. Results are generally reported as either presence or absence of venous compression. In fact, in patients with suspected TOS but without chronic venous occlusion, the forearm volume changes may result from various combinations of forearm position from heart level, arterial inflow, and/or venous outflow positional impairment. Read More

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