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https://www.readbyqxmd.com/read/29347946/effects-of-long-term-balance-training-with-vibrotactile-sensory-augmentation-among-community-dwelling-healthy-older-adults-a-randomized-preliminary-study
#1
Tian Bao, Wendy J Carender, Catherine Kinnaird, Vincent J Barone, Geeta Peethambaran, Susan L Whitney, Mohammed Kabeto, Rachael D Seidler, Kathleen H Sienko
BACKGROUND: Sensory augmentation has been shown to improve postural stability during real-time balance applications. Limited long-term controlled studies have examined retention of balance improvements in healthy older adults after training with sensory augmentation has ceased. This pilot study aimed to assess the efficacy of long-term balance training with and without sensory augmentation among community-dwelling healthy older adults. METHODS: Twelve participants (four males, eight females; 75...
January 18, 2018: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29339922/effect-of-rhythmic-auditory-cueing-on-gait-in-cerebral-palsy-a-systematic-review-and-meta-analysis
#2
REVIEW
Shashank Ghai, Ishan Ghai, Alfred O Effenberg
Auditory entrainment can influence gait performance in movement disorders. The entrainment can incite neurophysiological and musculoskeletal changes to enhance motor execution. However, a consensus as to its effects based on gait in people with cerebral palsy is still warranted. A systematic review and meta-analysis were carried out to analyze the effects of rhythmic auditory cueing on spatiotemporal and kinematic parameters of gait in people with cerebral palsy. Systematic identification of published literature was performed adhering to Preferred Reporting Items for Systematic Reviews and Meta-Analyses and American Academy for Cerebral Palsy and Developmental Medicine guidelines, from inception until July 2017, on online databases: Web of Science, PEDro, EBSCO, Medline, Cochrane, Embase and ProQuest...
2018: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/29339773/postural-adaptations-to-unilateral-knee-joint-hypomobility-induced-by-orthosis-wear-during-gait-initiation
#3
A Delafontaine, P Fourcade, J L Honeine, S Ditcharles, E Yiou
Balance control and whole-body progression during gait initiation (GI) involve knee-joint mobility. Single knee-joint hypomobility often occurs with aging, orthopedics or neurological conditions. The goal of the present study was to investigate the capacity of the CNS to adapt GI organization to single knee-joint hypomobility induced by the wear of an orthosis. Twenty-seven healthy adults performed a GI series on a force-plate in the following conditions: without orthosis ("control"), with knee orthosis over the swing leg ("orth-swing") and with the orthosis over the contralateral stance leg ("orth-stance")...
January 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29332755/investigating-the-anticipatory-postural-adjustment-phase-of-gait-initiation-in-different-directions-in-chronic-ankle-instability-patients
#4
Zahra Ebrahimabadi, Sedigheh Sadat Naimi, Abbas Rahimi, Heydar Sadeghi, Seyed Majid Hosseini, Alireza Akbarzadeh Baghban, Syed Asadullah Arslan
OBJECTIVE: The main objective of the present study was to analyze how supra spinal motor control mechanisms are altered in different directions during anticipatory postural phase of gait initiation in chronic ankle instability patients. It seems that supra spinal pathways modulate anticipatory postural adjustment phase of gait initiation. Yet, there is a dearth of research on the effect of chronic ankle instability on the anticipatory postural adjustment phase of gait initiation in different directions...
January 2018: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29324510/reliability-and-validity-of-computerized-force-platform-measures-of-balance-function-in-healthy-older-adults
#5
Cathy C Harro, Chelsea Garascia
BACKGROUND AND PURPOSE: Postural control declines with aging and is an independent risk factor for falls in older adults. Objective examination of balance function is warranted to direct fall prevention strategies. Force platform (FP) systems provide quantitative measures of postural control and analysis of different aspects of balance. The purpose of this study was to examine the reliability and validity of FP measures in healthy older adults. METHODS: This study enrolled 46 healthy elderly adults, mean age 67...
January 10, 2018: Journal of Geriatric Physical Therapy
https://www.readbyqxmd.com/read/29317501/most-mutations-that-cause-spinocerebellar-ataxia-autosomal-recessive-type-16-scar16-destabilize-the-protein-quality-control-e3-ligase-chip
#6
Adam J Kanack, Oliver J Newsom, Kenneth Matthew Scaglione
The accumulation of misfolded proteins promotes protein aggregation and neuronal death in many neurodegenerative diseases. To counteract misfolded protein accumulation, neurons have pathways that recognize and refold or degrade aggregation-prone proteins. One U-box containing E3 ligase, C terminus of Hsc70-interacting protein (CHIP) plays a key role in this process, targeting misfolded proteins for proteasomal degradation. CHIP plays a protective role in mouse models of neurodegenerative disease, and in humans, mutations in CHIP cause spinocerebellar ataxia autosomal recessive type 16 (SCAR16), a fatal neurodegenerative disease characterized by truncal and limb ataxia that result in gait instability...
January 9, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29306549/effects-of-walking-speed-on-the-step-by-step-control-of-step-width
#7
Katy H Stimpson, Lauren N Heitkamp, Joscelyn S Horne, Jesse C Dean
Young, healthy adults walking at typical preferred speeds use step-by-step adjustments of step width to appropriately redirect their center of mass motion and ensure mediolateral stability. However, it is presently unclear whether this control strategy is retained when walking at the slower speeds preferred by many clinical populations. We investigated whether the typical stabilization strategy is influenced by walking speed. Twelve young, neurologically intact participants walked on a treadmill at a range of prescribed speeds (0...
December 24, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29305208/vestibulo-cochlear-function-in-inflammatory-neuropathies
#8
Marisa Blanquet, Jens A Petersen, Antonella Palla, Dorothe Veraguth, Konrad P Weber, Dominik Straumann, Alexander A Tarnutzer, Hans H Jung
OBJECTIVE: We aimed to quantify peripheral-vestibular deficits that may contribute to imbalanced stance/gait in patients with inflammatory neuropathies. METHODS: Twenty-one patients (58 ± 15 y [mean age ± 1SD]; chronic-inflammatory-demyelinating-polyneuropathy = 10, Guillain-Barré Syndrome = 5, Anti-MAG peripheral neuropathy = 2, multifocal-motor-neuropathy = 4) were compared with 26 healthy controls. All subjects received video-head-impulse testing (vHIT), caloric irrigation and cervical/ocular vestibular-evoked myogenic-potentials (VEMPs)...
December 20, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29304507/perturbation-exercises-during-treadmill-walking-improve-pelvic-and-trunk-motion-in-older-adults-a-randomized-control-trial
#9
Yoav Gimmon, Raziel Riemer, Ilan Kurz, Amir Shapiro, Ronen Debbi, Itshak Melzer
BACKGROUND: Most falls among older adults occur while walking. Pelvic and trunk motions are required to maintain stability during walking. We aimed to explore whether training that incorporates unexpected loss of balance during walking that evokes balance recovery reactions will improve pelvic, thorax, and trunk kinematics at different walking speeds. METHODS: Fifty-three community-dwelling older adults (age 80.1 ± 5.6 years) were randomly allocated to an intervention group (n = 27) or a control group (n = 26)...
December 27, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/29304432/the-largest-lyapunov-exponent-of-gait-in-young-and-elderly-individuals-a-systematic-review
#10
REVIEW
Sina Mehdizadeh
The largest Lyapunov exponent (LyE) is an accepted method to quantify gait stability in young and old adults. However, a range of LyE values has been reported in the literature for healthy young and elderly adults in normal walking. Therefore, it has been impractical to use the LyE as a clinical measure of gait stability. The aims of this systematic review were to summarize different methodological approaches of quantifying LyE, as well as to classify LyE values of different body segments and joints in young and elderly individuals during normal walking...
December 16, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29300697/robust-neuro-optimal-control-of-underactuated-snake-robots-with-experience-replay
#11
Zhengcai Cao, Qing Xiao, Ran Huang, Mengchu Zhou
In this paper, the problem of path following for underactuated snake robots is investigated by using approximate dynamic programming and neural networks (NNs). The lateral undulatory gait of a snake robot is stabilized in a virtual holonomic constraint manifold through a partial feedback linearizing control law. Based on a dynamic compensator and Line-of-Sight guidance law, the path-following problem is transformed to a regulation problem of a nonlinear system with uncertainties. Subsequently, it is solved by an infinite horizon optimal control scheme using a single critic NN...
January 2018: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/29284521/exercise-intervention-for-unilateral-amputees-with-low-back-pain-study-protocol-for-a-randomised-controlled-trial
#12
Joseph G Wasser, Daniel C Herman, MaryBeth Horodyski, Jason L Zaremski, Brady Tripp, Phillip Page, Kevin R Vincent, Heather K Vincent
BACKGROUND: Atraumatic lower limb amputation is a life-changing event for approximately 185,000 persons in the United States each year. A unilateral amputation is associated with rapid changes to the musculoskeletal system including leg and back muscle atrophy, strength loss, gait asymmetries, differential mechanical joint loading and leg length discrepancies. Even with high-quality medical care and prostheses, amputees still develop secondary musculoskeletal conditions such as chronic low back pain (LBP)...
December 29, 2017: Trials
https://www.readbyqxmd.com/read/29281712/posture-alteration-as-a-measure-to-accommodate-uneven-ground-in-able-bodied-gait
#13
Soran Aminiaghdam, Reinhard Blickhan, Roy Muller, Christian Rode
Though the effects of imposed trunk posture on human walking have been studied, less is known about such locomotion while accommodating changes in ground level. For twelve able participants, we analyzed kinematic parameters mainly at touchdown and toe-off in walking across a 10-cm visible drop in ground level (level step, pre-perturbation step, step-down, step-up) with three postures (regular erect, ~30° and ~50° of trunk flexion from the vertical). Two-way repeated measures ANOVAs revealed step-specific effects of posture on the kinematic behavior of gait mostly at toe-off of the pre-perturbation step and the step-down as well as at touchdown of the step-up...
2017: PloS One
https://www.readbyqxmd.com/read/29276850/maintaining-stable-transfemoral-amputee-gait-on-level-sloped-and-simulated-uneven-conditions-in-a-virtual-environment
#14
James A Sturk, Edward D Lemaire, Emily H Sinitski, Nancy L Dudek, Markus Besemann, Jacqueline S Hebert, Natalie Baddour
PURPOSE: Describe and quantify how people with transfemoral amputations (TFA) maintain stable gait over a variety of surfaces; including, downhill and uphill, top and bottom-cross-slopes, medial-lateral translations, rolling hills and simulated rocky surfaces. METHODS: Ten TFA and ten matched people without amputations (NA) walked in a virtual environment with level, sloped and simulated uneven surfaces on a self-paced treadmill. Stability was quantified using medial-lateral margin of stability (ML-MoS), step parameters, and gait variability (standard deviations for speed, temporal-spatial parameters, foot clearance and root-mean-square of medial-lateral trunk acceleration)...
December 24, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/29276305/stable-robust-hybrid-zero-dynamics-control-of-powered-lower-limb-prostheses
#15
Anne E Martin, Robert D Gregg
To improve the quality of life for lower-limb amputees, powered prostheses are being developed. Advanced control schemes from the field of bipedal robots, such as hybrid zero dynamics (HZD), may provide great performance. HZD-based control specifies the motion of the actuated joints using output functions to be zeroed, and the required torques are calculated using input-output linearization. For one-step periodic gaits, there is an analytic metric of stability. To apply HZD-based control on a powered prosthesis, several modifications must be made...
August 2017: IEEE Transactions on Automatic Control
https://www.readbyqxmd.com/read/29260355/vestibular-impairment-in-chronic-inflammatory-demyelinating-polyneuropathy
#16
Gülden Akdal, Tural Tanrıverdizade, İhsan Şengün, Fikret Bademkıran, Koray Koçoğlu, Ayşe Nur Yüceyar, Özgül Ekmekçi, Hatice Karasoy, G Michael Halmágyi
Chronic inflammatory demyelinating polyneuropathy (CIDP) is a common, treatable, autoimmune peripheral neuropathy considered to produce imbalance by weakness and proprioceptive impairment rather than vestibular impairment. We measured semicircular canal vestibular function in 21 CIDP patients (15M/6F) by the video head impulse test and postural stability with a battery comprising the modified Clinical Test of Sensory Integration and Balance, the Berg Balance Scale, the Dynamic Gait Index, the Fall Efficiency Scale, and the International Cooperative Ataxia Rating Scale...
December 19, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/29259237/adaptation-of-stability-during-perturbed-walking-in-parkinson-s-disease
#17
Dario Martelli, Lan Luo, Jiyeon Kang, Un Jung Kang, Stanley Fahn, Sunil K Agrawal
Gait and balance disorders are major problems that contribute to falls among subjects with Parkinson's disease (PD). Strengthening the compensatory responses through the use of balance perturbations may improve balance in PD. To date, it is unclear how PD affects the ability to react and adapt to perturbations delivered while walking. This study aims to investigate how PD affects the ability to walk, respond to balance perturbations, and produce acute short-term effects to improve compensatory reactions and gait stability...
December 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29248435/delphi-consensus-of-an-expert-committee-in-oncogeriatrics-regarding-comprehensive-geriatric-assessment-in-seniors-with-cancer-in-spain
#18
Maria-Jose Molina-Garrido, Carmen Guillén-Ponce, Remei Blanco, Juana Saldaña, Jaime Feliú, Maite Antonio, Rosa López-Mongil, Primitivo Ramos Cordero, Regina Gironés
OBJECTIVES: The aim of this work was to reach a national consensus in Spain regarding the Comprehensive Geriatric Assessment (CGA) domains in older oncological patients and the CGA scales to be used as a foundation for widespread use. MATERIAL AND METHODS: The Delphi method was implemented to attain consensus. Representatives of the panel were chosen from among the members of the Oncogeriatric Working Group of the Spanish Society of Medical Oncology (SEOM). Consensus was defined as ≥66...
December 13, 2017: Journal of Geriatric Oncology
https://www.readbyqxmd.com/read/29234553/gait-deficits-under-dual-task-conditions-in-the-concussed-adolescent-and-young-athlete-population-a-systematic-review
#19
Larisa Grants, Bailey Powell, Cody Gessel, Faith Hiser, Amy Hassen
Background: There are no current sport concussion assessments that capture the effects of dual-task conditions on gait. Multiple studies have evaluated changes, but none have comprehensively examined literature related to the adolescent and young adult population.Purpose: The purpose of this systematic review is to synthesize documented changes in gait under dual-task conditions in adolescents and young adults after sustaining a concussion.Study Design: Systematic Review. Methods: The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) was consulted to guide this systematic review...
December 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29229398/can-an-aversive-extinction-resistant-memory-trigger-impairments-in-walking-adaptability-an-experimental-study-using-adult-rats
#20
Filipe Mello Medeiros, Jociane de Carvalho Myskiw, Pedro Porto Alegre Baptista, Laura Tartari Neves, Lucas Athaydes Martins, Cristiane Regina Guerino Furini, Iván Izquierdo, Léder Leal Xavier, Kristen Hollands, Régis Gemerasca Mestriner
Cognitive demands can influence the adaptation of walking, a crucial skill to maintain body stability and prevent falls. Whilst previous research has shown emotional load tunes goal-directed movements, little attention has been given to this finding. This study sought to assess the effects of suffering an extinction-resistant memory on skilled walking performance in adult rats, as an indicator of walking adaptability. Thus, 36 Wistar rats were divided in a two-part experiment. In the first part (n=16), the aversive, extinction-resistance memory paradigm was established using a fear-conditioning chamber...
December 8, 2017: Neuroscience Letters
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