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Postural control

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https://www.readbyqxmd.com/read/28919878/postural-control-in-bilateral-vestibular-failure-its-relation-to-visual-proprioceptive-vestibular-and-cognitive-input
#1
Andreas Sprenger, Jann F Wojak, Nico M Jandl, Christoph Helmchen
Patients with bilateral vestibular failure (BVF) suffer from postural and gait unsteadiness with an increased risk of falls. The aim of this study was to elucidate the differential role of otolith, semicircular canal (SSC), visual, proprioceptive, and cognitive influences on the postural stability of BVF patients. Center-of-pressure displacements were recorded by posturography under six conditions: target visibility; tonic head positions in the pitch plane; horizontal head shaking; sensory deprivation; dual task; and tandem stance...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28919167/back-off-the-effect-of-emotion-on-backward-step-initiation
#2
Daniëlle Bouman, John F Stins
The distance regulation (DR) hypothesis states that actors are inclined to increase their distance from an unpleasant stimulus. The current study investigated the relation between emotion and its effect on the control of backward step initiation, which constitutes an avoidance-like behavior. Participants stepped backward on a force plate in response to neutral, high-arousing pleasant and high-arousing unpleasant visual emotional stimuli. Gait initiation parameters and the results of an exploratory analysis of postural sway were compared across the emotion categories using significance testing and Bayesian statistics...
September 14, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28918597/effect-of-vibration-on-postural-control-and-gait-of-elderly-subjects-a-systematic-review
#3
REVIEW
Atefeh Aboutorabi, Mokhtar Arazpour, Mahmood Bahramizadeh, Farzam Farahmand, Reza Fadayevatan
BACKGROUND AND AIM: Gait and balance disorders are common in the elderly populations, and their prevalence increases with age. This systematic review was performed to summarize the current evidence for subthreshold vibration interventions on postural control and gait in elderly. METHOD: A review of intervention studies including the following words in the title/abstract: insole, foot and ankle appliances, vibration, noise and elderly related to balance and gait...
September 16, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/28917361/immediate-effects-of-pilates-based-therapeutic-exercise-on-postural-control-of-young-individuals-with-non-specific-low-back-pain-a-randomized-controlled-trial
#4
Susana Lopes, Christophe Correia, Gonçalo Félix, Mário Lopes, Ana Cruz, Fernando Ribeiro
OBJECTIVES: Low back pain affects the person's ability to keep balance, especially in challenging conditions. The purpose of this study was to determine the immediate effects of Pilates exercises on postural sway and dynamic balance of young individuals with non-specific low back pain. DESIGN: Controlled laboratory design. SETTINGS AND MAIN OUTCOME MEASURES: Forty-six participants with non-specific low back pain were randomized to a Pilates (n=23, 10 males; age: 21...
October 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28916583/a-balance-and-proprioception-intervention-programme-to-enhance-combat-performance-in-military-personnel
#5
Shany Funk, T Jacob, D Ben-Dov, E Yanovich, O Tirosh, N Steinberg
BACKGROUND: Optimal functioning of the lower extremities under repeated movements on unstable surfaces is essential for military effectiveness. Intervention training to promote proprioceptive ability should be considered in order to limit the risk for musculoskeletal injuries. The aim of this study was to assess the effect of a proprioceptive intervention programme on static and dynamic postural balance among Israel Defense Forces combat soldiers. METHODS: Twenty-seven male soldiers, aged 18-20 years, from a physical fitness instructor's course, were randomly divided into two groups matched by age and army unit...
September 14, 2017: Journal of the Royal Army Medical Corps
https://www.readbyqxmd.com/read/28915097/synergies-and-motor-equivalence-in-voluntary-sway-tasks-the-effects-of-visual-and-mechanical-constraints
#6
Mariusz P Furmanek, Stanisław Solnik, Daniele Piscitelli, Omid Rasouli, Ali Falaki, Mark L Latash
The authors used two analyses developed within the framework of the uncontrolled manifold hypothesis to quantify multimuscle synergies during voluntary body sway: analysis of intertrial variance and analysis of motor equivalence with respect to the center of pressure (COP) trajectory. Participants performed voluntary sway tasks in the anteroposterior direction at 0.33 and 0.66 Hz. Muscle groups were identified in the space of muscle activations and used as elemental variables in the synergy analyses. Changing mechanical and vision feedback-based constraints led to significant changes in indices of sway performance such as COP deviations in the uninstructed, mediolateral direction and indices of spontaneous postural sway...
September 15, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28915093/sport-skill-specific-expertise-biases-sensory-integration-for-spatial-referencing-and-postural-control
#7
Michalis Thalassinos, Giorgos Fotiadis, Fotini Arabatzi, Brice Isableu, Vassilia Hatzitaki
The authors asked how sport expertise modulates visual field dependence and sensory reweighting for controlling posture. Experienced soccer athletes, ballet dancers, and nonathletes performed (a) a Rod and Frame test and (b) a 100-s bipedal stance task during which vision and proprioception were successively or concurrently disrupted in 20-s blocks. Postural adaptation was assessed in the mean center of pressure displacement, root mean square of center of pressure velocity and ankle muscles integrated electromyography activity...
September 15, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28914720/effects-of-corrective-exercise-for-thoracic-hyperkyphosis-on-posture-balance-and-well-being-in-older-women-a-double-blind-group-matched-design
#8
Hyun-Jeong Jang, Lynne C Hughes, Duck-Won Oh, Suhn-Yeop Kim
BACKGROUND AND PURPOSE: The purpose of this study was to identify the effects of a corrective exercise for thoracic hyperkyphosis on posture, balance, and well-being in Korean community-dwelling older women. METHODS: Fifty women 65 years of age and older, recruited from 2 senior centers, participated in this study. Participants were assigned to either the experimental group (EG) or the control group (CG) on the basis of convenience of location, and 22 in each were analyzed...
September 13, 2017: Journal of Geriatric Physical Therapy
https://www.readbyqxmd.com/read/28914718/balance-evaluation-of-prefrail-and-frail-community-dwelling-older-adults
#9
Larissa Tomasauskas Marques, Natalia Camargo Rodrigues, Emanuella Oliveira Angeluni, Fernanda Pinheiro Amador Dos Santos Pessanha, Natália Maira da Cruz Alves, Renato Campos Freire Júnior, Eduardo Ferriolli, Daniela Cristina Carvalho de Abreu
BACKGROUND AND PURPOSE: With the increase in the percentage of the population in older adulthood, issues such as frailty syndrome need to be considered. The aim of the present study was to evaluate the ability of the Balance Evaluation Systems Test (BESTest) and center of pressure (COP) in their ability to discriminate between nonfrail, prefrail, and frail older adults. The proposed hypothesis is that frail older adults would show poorer performance in BESTest tasks and higher oscillation of COP on a force platform...
September 13, 2017: Journal of Geriatric Physical Therapy
https://www.readbyqxmd.com/read/28912700/action-direction-of-muscle-synergies-in-voluntary-multi-directional-postural-control
#10
Akari Kubo, Shota Hagio, Benio Kibushi, Toshio Moritani, Motoki Kouzaki
A muscle synergy is a coordinative structure of muscles that has been proposed as a strategy to reduce the number of variables that the central nervous system (CNS) has to address in motor tasks. In this article, the mechanical contribution of muscle synergies and coordinative structures of muscles in voluntary multi-directional postural control were investigated. The task for healthy, young subjects was to shift and align their center of pressure (COP) to targets dispersed in 12 different directions in the horizontal plane by leaning their bodies for 10 s...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28910658/postural-regulatory-strategies-during-quiet-sitting-are-affected-in-individuals-with-thoracic-spinal-cord-injury
#11
Matija Milosevic, Dany H Gagnon, Philippe Gourdou, Kimitaka Nakazawa
Thoracic spinal cord injury (SCI) can have significant negative consequences, which can affect the ability to maintain unsupported sitting. The objectives of this study were to compare postural control of individuals with high- and low-thoracic SCI to able-bodied people and evaluate the effects of upper-limb support on postural control during quiet sitting. Twenty-five individuals were recruited into: (a) high-thoracic SCI; (b) low-thoracic SCI; and (c) able-body subgroups. Participants were seated and asked to maintain a steady balance in the following postures: (1) both hands resting on thighs; (2) both arms crossed over the chest; and (3) both arms extended...
August 31, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28910654/kinect-based-assessment-of-lower-limb-kinematics-and-dynamic-postural-control-during-the-star-excursion-balance-test
#12
Moataz Eltoukhy, Christopher Kuenze, Jeonghoon Oh, Savannah Wooten, Joseph Signorile
Assessments using dynamic postural control tests, like the Star Excursion Balance Test (SEBT), in combination with three-dimensional (3D) motion analysis can yield critical information regarding a subject's lower limb movement patterns. 3D analysis can provide a clear understanding of the mechanisms that lead to specific outcome measures on the SEBT. Currently, the only technology for 3D motion analysis during such tests is expensive marker-based motion analysis systems, which are impractical for use in clinical settings...
September 9, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28904967/foot-structure-in-boys-with-down-syndrome
#13
Ewa Puszczałowska-Lizis, Krzysztof Nowak, Jarosław Omorczyk, Tadeusz Ambroży, Przemysław Bujas, Leszek Nosiadek
INTRODUCTION AND AIM: Down syndrome (DS) is associated with numerous developmental abnormalities, some of which cause dysfunctions of the posture and the locomotor system. The analysis of selected features of the foot structure in boys with DS versus their peers without developmental disorders is done. MATERIALS AND METHODS: The podoscopic examination was performed on 30 boys with DS aged 14-15 years. A control group consisted of 30 age- and gender-matched peers without DS...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28904850/effects-of-exercise-on-cervical-angle-and-respiratory-function-in-smartphone-users
#14
Na Kyung Lee, Sang In Jung, Do Youn Lee, Kyung Woo Kang
OBJECTIVES: The aim of this study was to determine whether exercises can change the cervical angle and respiratory function in smartphone users. METHODS: Thirty healthy volunteers were recruited. The subjects were randomly divided into an exercise group and a control group. All participants used a smartphone for 1 hour while maintaining a sitting posture. Then, each group performed their assigned activity. The exercise group performed two types of exercises and the control group maintained routine activities for 20 minutes...
August 2017: Osong Public Health and Research Perspectives
https://www.readbyqxmd.com/read/28902932/non-pharmacological-interventions-to-promote-the-sleep-of-patients-after-cardiac-surgery-a-systematic-review
#15
Fernanda de Souza Machado, Regina Claudia da Silva Souza, Vanessa Brito Poveda, Ana Lucia Siqueira Costa
Objective: to analyze evidence available in the literature concerning non-pharmacological interventions that are effective to treat altered sleep patterns among patients who underwent cardiac surgery. Method: systematic review conducted in the National Library of Medicine-National Institutes of Health, Cochrane Central Register of Controlled Trials, Latin American and Caribbean Health Sciences Literature, Scopus, Embase, Cumulative Index to Nursing and Allied Health Literature and PsycINFO databases, and also grey literature...
September 12, 2017: Revista Latino-americana de Enfermagem
https://www.readbyqxmd.com/read/28900567/the-comparison-of-the-lumbar-multifidus-muscles-function-between-gymnastic-athletes-with-sway-back-posture-and-normal-posture
#16
Elnaz Mahdavie, Asghar Rezasoltani, Leila Simorgh
BACKGROUND: The prevalence of sway back posture (SBP) is very high among elite gymnasts. This posture may be partly due to the improper function of lumbar multifidus muscles (LMM) as lumbar stabilizers muscles. PURPOSE: The aim of this study was to compare the thicknesses of LMM measured at rest and during the contraction elicited during an arm lift between elite gymnasts with SBP and normal posture. STUDY DESIGN: Observational, descriptive, comparative...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28900393/postural-hand-synergies-during-environmental-constraint-exploitation
#17
Cosimo Della Santina, Matteo Bianchi, Giuseppe Averta, Simone Ciotti, Visar Arapi, Simone Fani, Edoardo Battaglia, Manuel Giuseppe Catalano, Marco Santello, Antonio Bicchi
Humans are able to intuitively exploit the shape of an object and environmental constraints to achieve stable grasps and perform dexterous manipulations. In doing that, a vast range of kinematic strategies can be observed. However, in this work we formulate the hypothesis that such ability can be described in terms of a synergistic behavior in the generation of hand postures, i.e., using a reduced set of commonly used kinematic patterns. This is in analogy with previous studies showing the presence of such behavior in different tasks, such as grasping...
2017: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/28899731/combined-physical-cognitive-training-enhances-postural-performances-during-daily-life-tasks-in-older-adults
#18
Rabeb Laatar, Hiba Kachouri, Rihab Borji, Haithem Rebai, Sonia Sahli
Physical-cognitive interventions seem promising to improve balance and gait performances and prevent falls in the elderly. Although these beneficial effects, it is still not clear whether these physical-cognitive training modalities leads to more general non-specific adaptations that can be transferred to some measures reflecting every day abilities. This randomized controlled trial examined postural (center of pressure oscillations), physical (lower body strength, gait speed, functional mobility, dynamic balance) and cognitive performances (reaction time) and postural performance during daily life tasks (walking while conversing on a phone and maintaining an upright standing posture while buttoning a shirt) in older adults (66...
September 9, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28899341/development-of-a-home-based-training-program-for-post-ward-geriatric-rehabilitation-patients-with-cognitive-impairment-study-protocol-of-a-randomized-controlled-trail
#19
Martin Bongartz, Rainer Kiss, Phoebe Ullrich, Tobias Eckert, Jürgen Bauer, Klaus Hauer
BACKGROUND: Geriatric patients with cognitive impairment (CI) show an increased risk for a negative rehabilitation outcome and reduced functional recovery following inpatient rehabilitation. Despite this obvious demand, evidence-based training programs at the transition from rehabilitation to the home environments are lacking. The aim of this study is to evaluate the efficacy of a feasible and cost-effective home-based training program to improve motor performance and to promote physical activity, specifically-tailored for post-ward geriatric patients with CI...
September 12, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28898869/disrupted-brain-network-hubs-in-subtype-specific-parkinson-s-disease
#20
Ling-Yan Ma, Xiao-Dan Chen, Yong He, Hui-Zi Ma, Tao Feng
BACKGROUND/AIMS: The topological organization of brain functional networks is impaired in Parkinson's disease (PD). However, the altered patterns of functional network hubs in different subtypes of PD are not completely understood. METHODS: 3T resting-state functional MRI and voxel-based graph-theory analysis were employed to systematically investigate the intrinsic functional connectivity patterns of whole-brain networks. We enrolled 31 patients with PD (12 tremor dominant [TD] and 19 with postural instability/gait difficulty [PIGD]) and 22 matched healthy controls...
August 25, 2017: European Neurology
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