2,084 results match your criteria sway compared

Anti-Sway and Positioning Adaptive Control of a Double-Pendulum Effect Crane System With Neural Network Compensation.

Front Robot AI 2021 19;8:639734. Epub 2021 Apr 19.

College of Logistics Engineering, Shanghai Maritime University, Shanghai, China.

Cranes are widely used in the field of construction, logistics, and the manufacturing industry. Cranes that use wire ropes as the main lifting mechanism are deeply troubled by the swaying of heavy objects, which seriously restricts the working efficiency of the crane and even cause accidents. Compared with the single-pendulum crane, the double-pendulum effect crane model has stronger nonlinearity, and its controller design is challenging. Read More

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Examining the Research Criteria for Traumatic Encephalopathy Syndrome in Middle-Aged Men From the General Population Who Played Contact Sports in High School.

Front Neurol 2021 14;12:632618. Epub 2021 Apr 14.

Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Charlestown, MA, United States.

There are no validated or agreed upon diagnostic clinical criteria for chronic traumatic encephalopathy or traumatic encephalopathy syndrome. This study examines the leading research criteria for traumatic encephalopathy syndrome (TES) in middle-aged men in the general population. Participants were 409 men between the ages of 35 and 55 recruited through an online crowdsourcing platform. Read More

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The relation between falls risk and movement variability in Parkinson's disease.

Exp Brain Res 2021 Apr 29. Epub 2021 Apr 29.

Department of Neurology, Sentara Hospital, Charlottesville, VA, 22911, USA.

Falls are a major health concern for older adults with Parkinson's disease (PD). This study was designed to examine differences in falls risk and its relation to changes in the average and variability (i.e. Read More

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Functional limits of stability and standing balance in people with Parkinson's disease with and without freezing of gait using wearable sensors.

Gait Posture 2021 Apr 19;87:123-129. Epub 2021 Apr 19.

Department of Neurology, Oregon Health & Science University, Portland, OR, USA. Electronic address:

Background: People with from Parkinson's disease (PD) and freezing of gait (FoG) have more frequent falls compared to those who do not freeze but there is no consensus on which, specific objective measures of postural instability are worse in freezers (PD + FoG) than non-freezers (PD-FoG).

Research Question: Are functional limits of stability (fLoS) or postural sway during stance measured with wearable inertial sensors different between PD + FoG versus PD-FoG, as well as between PD versus healthy control subjects (HC)?

Methods: Sixty-four PD subjects with FoG (MDS-UPDRS Part III: 45.9 ± 12. Read More

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Clinical and biomechanical factors associated with falls and rheumatoid arthritis: baseline cohort with longitudinal nested case-control study.

Rheumatology (Oxford) 2021 Apr 26. Epub 2021 Apr 26.

Faculty of Medicine and Health Sciences, University of East Anglia, Norwich, UK.

Objective: To identify the clinical and biomechanical characteristics associated with falls in people with RA.

Methods: 436 people aged 60 years or older with RA completed a one-year prospective survey of falls in the UK. At baseline, questionnaires recorded data including: personal and medical history, pain and fatigue scores, health related quality of life (HRQoL), physical activity and medication history. Read More

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Postural stability is a valid and meaningful disability metric in progressive MS with potential for use in neuroprotective therapy trials.

Mult Scler Relat Disord 2021 Apr 11;52:102946. Epub 2021 Apr 11.

Department of Neurology, St. Vincent's University Hospital, Dublin 4, Ireland; School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland.

Background: Balance impairment is observed in up to 70% of people with MS (pwMS) and worsens with disease progression. Posturography using a force platform is the current gold standard in the measurement of balance. However, posturography has not been adequately studied or widely accepted for use as a disability outcome measure for pwMS. Read More

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Errors in cognitive performance trigger postural instability in Parkinson's disease.

Parkinsonism Relat Disord 2021 Apr 20;86:91-96. Epub 2021 Apr 20.

Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA; Center for Neurological Restoration, Cleveland Clinic, Cleveland, OH, USA. Electronic address:

Background: Globally, postural stability and cognitive performance are intimately linked in Parkinson's disease (PD). However, a fundamental gap exists in understanding the precise relationship between a disruption in executive function and its impact on postural stability.

Objective: This project aimed to determine the precise effects of cognitive errors on postural stability under dual-task conditions in participants with PD and controls. Read More

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The Effect of Motion Direction and Eccentricity on Vection, VR Sickness and Head Movements in Virtual Reality.

Multisens Res 2021 Apr 20:1-40. Epub 2021 Apr 20.

Division of Psychology, Nottingham Trent University, 50 Shakespeare Street, Nottingham, NG1 4FQ, UK.

Virtual Reality (VR) experienced through head-mounted displays often leads to vection, discomfort and sway in the user. This study investigated the effect of motion direction and eccentricity on these three phenomena using optic flow patterns displayed using the Valve Index. Visual motion stimuli were presented in the centre, periphery or far periphery and moved either in depth (back and forth) or laterally (left and right). Read More

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The effect of low light levels on postural stability in older adults with age-related macular degeneration.

Ophthalmic Physiol Opt 2021 Apr 20. Epub 2021 Apr 20.

Centre for Vision and Eye Research, School of Optometry & Vision Science and Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia.

Purpose: To investigate the effect of low light levels on postural stability in older adults with and without age-related macular degeneration (AMD).

Methods: Participants included 28 older adults [14 with AMD (mean age ± S.D. Read More

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Usefulness of postural sway spectral analysis in the diagnostic route and clinical integration of cervicogenic and vestibular sources of dizziness: A cross-sectional preliminary study.

J Vestib Res 2021 Apr 8. Epub 2021 Apr 8.

University of Rome Tor Vergata -Department of Clinical Sciences and Translational Medicine -Italy.

Background: Posturography power spectra (PS) implementation has been proven to discriminate between sensory inputs detriment of vestibular and proprioceptive origin.

Objective: To deepen the role of posturography testing in the diagnostic route of dizzy conditions, by comparing two groups of patients -93 affected by cervicogenic dizziness (CGD) and 72 by unilateral vestibular hypofunction (UVH) -with a group of 98 age- and gender-matched healthy subjects, serving as control group (CON).

Methods: All participants underwent otoneurological testing including video head impulse test (vHIT) and posturography testing with PS analysis. Read More

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A meta-analysis and systematic review of changes in joint position sense and static standing balance in patients with whiplash-associated disorder.

PLoS One 2021 8;16(4):e0249659. Epub 2021 Apr 8.

Centre of Precision Rehabilitation for Spinal Pain (CPR Spine), School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, United Kingdom.

Objective: To synthesise and analyse the current evidence regarding changes in joint position sense (JPS) and standing balance in people with whiplash-associated disorder (WAD) taking the presence or absence of dizziness into account.

Data Sources: PubMed, CINAHL Plus, Web of Science, Embase, MEDLINE and APA PsycINFO were searched by two independent reviewers from inception until August 2020 and reference lists of all included studies were also reviewed.

Study Selection: Only cross-sectional studies that measured JPS and/or standing balance between people with WAD vs. Read More

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Arch Phys Med Rehabil 2021 Apr 2. Epub 2021 Apr 2.

Department of Health Sciences, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil; Department of Physical Therapy, Federal University of São Carlos, São Carlos, SP, Brazil; Graduate Program in Rehabilitation and Functional Performance, Ribeirão Preto Medical School, University of São Paulo, Brazil. Electronic address:

Design: Randomized Clinical Trial SETTING: Outpatient Physical Therapy.

Participants: One hundred and twenty people with chronic low back (CLBP) aged 18 to 60 years.

Interventions: SSKT, Sham KT (no tension) and Minimal Intervention (Educational booklet for self-management counseling). Read More

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Effects of biodex balance training on symptomatic knee osteoarthritis in Rawalpindi: A randomized control trial.

J Pak Med Assoc 2021 02;71(2(A)):402-405

Department of Physiotherapy, Riphah College of Rehabilitation and Allied Health Sciences. Riphah International University, Islamabad, Pakistan.

Objective: To determine the effect of Biodex training on lower limb functional performance, balance, pain and proprioception in symptomatic knee osteoarthritis patients.

Methods: The randomised controlled study was conducted at the Armed Forces Institute of Rehabilitation Medicine, Rawalpindi, Pakistan, from February to June 2018, and comprised patients of both genders aged 35-65 years with bilateral knee osteoarthritis. The patients were randomised using sealed envelope method into two equal control and experimental groups. Read More

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February 2021

Isokinetic Muscle Strength and Postural Sway of Recreationally Active Older Adults vs. Master Road Runners.

Front Physiol 2021 18;12:623150. Epub 2021 Mar 18.

Centro de Educação Física e Desportos, Universidade Federal do Espírito Santo, Vitória, Brazil.

Trunk muscle strength and control is an important prerequisite for everyday activities among elderly people decreasing the predisposition to falls. High levels of physical exercise performed by older athletes could offer benefits to core/trunk muscle strength and postural control compared with recreational physical activities and among elderly people with lower levels of physical activity. The present study aimed to compare trunk muscle strength and postural control of older running athletes vs. Read More

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Postural mechanisms in moderate-to-severe cerebral palsy.

J Neurophysiol 2021 May 31;125(5):1698-1719. Epub 2021 Mar 31.

Department of Rehabilitation Sciences, University of Hartford, West Hartford, Connecticut.

People with moderate-to-severe cerebral palsy (CP) have the greatest need for postural control research yet are usually excluded from research due to deficits in sitting ability. We use a support system that allows us to quantify and model postural mechanisms in nonambulatory children with CP. A continuous external bench tilt stimulus was used to evoke trunk postural responses in seven sitting children with CP (ages 2. Read More

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Postural control development from late childhood through young adulthood.

Gait Posture 2021 May 1;86:169-173. Epub 2021 Mar 1.

Center for Cognition, Action, & Perception, Department of Psychology, University of Cincinnati, Cincinnati, OH, USA.

Background: The development of stable postural control is characterized by changes in sway variability and periods of rapid reorganization of motor system components.

Research Question: The current study examined whether changing biomechanical and perceptual demands influences the postural control behavior during development.

Method: The center of pressure (COP) was assessed via a cross-sectional design. Read More

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Short-term balance training and acute effects on postural sway in balance-deficient older adults: a randomized controlled trial.

BMC Sports Sci Med Rehabil 2021 Mar 9;13(1):23. Epub 2021 Mar 9.

Department of Public Health and Clinical Medicine, Section for Sustainable Health, Umeå University, Umeå, Sweden.

Background: We aimed to determine the effectiveness of 4 weeks of balance exercise compared with no intervention on objectively measured postural sway.

Methods: This was a single-center parallel randomized controlled, open label, trial. A six-sided dice was used for allocation at a 1:1-ratio between exercise and control. Read More

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The Relation of Mental Rotation and Postural Stability.

J Mot Behav 2021 Mar 21:1-15. Epub 2021 Mar 21.

Faculty of Human Science, University of Regensburg, Regensburg, Germany.

Main goal of this study was to investigate the influence of mental rotation tasks on postural stability. 84 participants were tested with two object-based mental rotation tasks (cube vs. human figures), an egocentric mental rotation task with one human figure, a math- (cognitive control) and a neutral task, while standing on a force plate in a both-legged narrow stance. Read More

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Are there common walking gait characteristics in patients diagnosed with late-onset Pompe disease?

Hum Mov Sci 2021 Mar 14;77:102777. Epub 2021 Mar 14.

Human Movement and Rehabilitation, School of Health and Society, University of Salford, Salford, UK.

Late-onset Pompe disease (LOPD) is a rare disease, defined as a progressive accumulation of lysosomal glycogen resulting in muscle weakness and respiratory problems. Anecdotally, individuals often have difficulties walking, yet, there is no three-dimensional data supporting these claims. We aimed to assess walking patterns in individuals with LOPD and compare with healthy individuals. Read More

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Age-Related Changes in Standing Balance in Preschoolers Using Traditional and Nonlinear Methods.

Front Physiol 2021 22;12:625553. Epub 2021 Feb 22.

Department of Sports Science, College of Education, Zhejiang University, Hangzhou, China.

Considerable disagreement exists on the linearity of the development of standing balance in children. This study aimed to use different traditional and nonlinear methods to investigate age-related changes in standing balance in preschoolers. A sample of 118 preschoolers took part in this study. Read More

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February 2021

A New Software for Quantifying Motor Deficit After Stroke: A Case-Control Feasibility Pilot Study.

Front Neurol 2021 11;12:603619. Epub 2021 Feb 11.

Department of Neurology and Stroke Center, Hospital La Paz Institute for Health Research-IdiPAZ, La Paz University Hospital, Universidad Autónoma de Madrid, Madrid, Spain.

The degree of disability after stroke needs to be objectively measured to implement adequate rehabilitation programs. Here, we evaluate the feasibility of a custom-built software to assess motor status after stroke. This is a prospective, case-control pilot study comparing stroke patients with healthy volunteers. Read More

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February 2021

Gathering your 'sea legs': Extended durations in an offshore environment increases postural sway excursions.

Gait Posture 2021 May 17;86:45-50. Epub 2021 Feb 17.

Department of Movement Sciences and Health, University of West Florida, Pensacola, FL, USA. Electronic address:

Background: Mal de debarquement (MdD), or often called 'sea legs', is the perception of self-motion after exposure to passive movement such as being on a boat at sea. Previous studies highlight sensory re-organization difficulties and postural control impairments after disembarking from sea travel in experienced crew members. However, the impact of MdD in individuals with minimal offshore experience, defined as participating in less than 2 offshore excursions per year, has not been investigated. Read More

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Attention and sensory integration for postural control in young adults with autism spectrum disorders.

Exp Brain Res 2021 Mar 6. Epub 2021 Mar 6.

Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA.

Postural control impairments have been reported in adults with autism spectrum disorders (ASD). Balance relies on the integration of multisensory cues, a process that requires attention. The purpose of this study was to determine if the influence of attention demands on sensory integration abilities relevant for balance partially contributes to postural control impairments in ASD. Read More

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Postural Sway in Older Patients with Sagittal Imbalance and Young Adults during Local Vibratory Proprioceptive Stimulation.

Healthcare (Basel) 2021 Feb 15;9(2). Epub 2021 Feb 15.

Department of Electrical and Mechanical Engineering, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan.

This study aimed to assess differences in somatosensory control strategies between older patients with sagittal imbalance and young adults during postural tasks. The center of pressure displacement in 27 older patients with sagittal imbalance and 27 young adults was determined upon standing blindfolded on a balance board. Vibratory stimulation at 56 to 100 Hz was applied bilaterally to the gastrocnemius and soleus muscles (GS) and lumbar multifidus to evaluate the contributions of proprioceptive signals to postural control. Read More

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February 2021

The Effects of Short-Term Visual Feedback Training on the Stability of the Roundhouse Kicking Technique in Young Karatekas.

Int J Environ Res Public Health 2021 02 18;18(4). Epub 2021 Feb 18.

Department of Biomedical Sciences for Health (SCIBIS), Università degli Studi di Milano, 20133 Milan, Italy.

The aim of this study was to assess the efficacy of using real-time visual feedback (VF) during a one-week balance training intervention on postural sway parameters in young karatekas. Twenty-six young male karatekas (age = 14.0 ± 2. Read More

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February 2021

Impact of Prolonged Exposure to a Slippery Surface on Postural Stability.

Int J Environ Res Public Health 2021 02 24;18(5). Epub 2021 Feb 24.

Neuromechanics Laboratory, Department of Kinesiology, Mississippi State University, Starkville, MS 39762, USA.

Falls are extremely common in occupational settings. Intrinsic factors such as overexertion and extrinsic factors such as the supporting surface are causative factors of falls. The impact of prolonged exposure to a slippery surface on postural stability has not been previously studied. Read More

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February 2021

The Influence of Body Fat Distribution on Postural Balance and Muscle Quality in Women Aged 60 Years and Over.

J Appl Biomech 2021 Feb 1:1-6. Epub 2021 Feb 1.

University of Brasilia.

The aim of this study was to investigate the influence of body fat distribution on postural balance and lower-limb muscle quality in women aged 60 years and over. Two hundred and twenty-two volunteers took part in this cross-sectional analysis. Participants underwent body fat distribution assessment using dual-energy x-ray absorptiometry and were classified as nonobese, gynoid obese, or android obese. Read More

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February 2021

Interjoint coordination between the ankle and hip joints during quiet standing in individuals with motor incomplete spinal cord injury.

J Neurophysiol 2021 May 24;125(5):1681-1689. Epub 2021 Feb 24.

Institute of Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada.

Individuals with motor incomplete spinal cord injuries (iSCI) often have impaired abilities to maintain upright balance. For able-bodied (AB) individuals, the ankle and hip joint accelerations are in antiphase to minimize the postural sway during quiet standing. Here we investigated how interjoint coordination between the ankle and hip joints was affected in individuals with iSCI, leading to their larger postural sway during quiet standing. Read More

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Reliance on Visual Input for Balance Skill Transfer in Older Adults: EEG Connectome Analysis Using Minimal Spanning Tree.

Front Aging Neurosci 2021 4;13:632553. Epub 2021 Feb 4.

Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan City, Taiwan.

Skill transfer from trained balance exercises is critical to reduce the rate of falls in older adults, who rely more on vision to control postural responses due to age-dependent sensory reweighting. With an electroencephalography (EEG) minimum spanning tree (MST) structure, the purpose of this study was to compare the organization of supraspinal neural networks of transfer effect after postural training using full and intermittent visual feedbacks for older adults. Thirty-two older adults were randomly assigned to the stroboscopic vision (SV) ( = 16; age = 64. Read More

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February 2021

Characterizing inter-limb synchronization after incomplete spinal cord injury: A cross-sectional study.

Gait Posture 2021 Mar 13;85:191-197. Epub 2021 Feb 13.

KITE, Toronto Rehab - University Health Network, 520 Sutherland Dr., M4G 3V9, Canada; Rehabilitation Sciences Institute, University of Toronto, 500 University Ave, Toronto, ON, M5G 1V7, Canada; Department of Physical Therapy, University of Toronto, 500 University Ave, Toronto, ON, M5G 1V7, Canada. Electronic address:

Background: Individuals with incomplete spinal cord injury (iSCI) demonstrate greater postural sway and increased dependency on vision to maintain balance compared to able-bodied individuals. Research on standing balance after iSCI has focused on the joint contribution of the lower limbs; however, inter-limb synchrony in quiet standing is a sensitive measure of individual limb contributions to standing balance control in other neurological populations. It is unknown if and how reduced inter-limb synchrony contributes to the poor standing balance of individuals with iSCI. Read More

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