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Dynamic postural stability

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https://www.readbyqxmd.com/read/28626327/the-effects-of-dynamic-exercise-using-the-proprioceptive-neuromuscular-facilitation-pattern-on-posture-in-healthy-adults
#1
Misuk Cho, Wontae Gong
[Purpose] The purpose of this study is to examine the effects of dynamic exercise utilizing the proprioceptor neuromuscular facilitation pattern accompanied by abdominal drawing-in exercises on posture in healthy adults. [Subjects and Methods] The total number of subjects were 32; 16 were randomly placed in the training group, and the remaining 16 made up the control group. The subjects in the training group conducted 5 sets of dynamic exercises utilizing the proprioceptor neuromuscular facilitation patterns each day, 3 times a week for 6 weeks...
June 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28623390/disturbed-cervical-proprioception-affects-perception-of-spatial-orientation-while-in-motion
#2
Eva-Maj Malmström, Per-Anders Fransson, Terese Jaxmar Bruinen, Semir Facic, Fredrik Tjernström
The proprioceptive, visual and vestibular sensory systems interact to maintain dynamic stability during movement. The relative importance and interplay between these sensory systems is still not fully understood. Increased knowledge about spatial perception and postural orientation would provide better understanding of balance disorders, and their rehabilitation. Displacement of the body in space was recorded in 16 healthy subjects performing a sequence of stepping-in-place tests without any visual or auditory cues...
June 17, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28610582/behavioral-and-neural-adaptations-in-response-to-five-weeks-of-balance-training-in-older-adults-a-randomized-controlled-trial
#3
Jan Ruffieux, Audrey Mouthon, Martin Keller, Michael Wälchli, Wolfgang Taube
BACKGROUND: While the positive effect of balance training on age-related impairments in postural stability is well-documented, the neural correlates of such training adaptations in older adults remain poorly understood. This study therefore aimed to shed more light on neural adaptations in response to balance training in older adults. METHODS: Postural stability as well as spinal reflex and cortical excitability was measured in older adults (65-80 years) before and after 5 weeks of balance training (n = 15) or habitual activity (n = 13)...
June 13, 2017: Journal of Negative Results in Biomedicine
https://www.readbyqxmd.com/read/28601095/reactive-stepping-with-functional-neuromuscular-stimulation-in-response-to-forward-directed-perturbations
#4
Alexander J Hunt, Brooke M Odle, Lisa M Lombardo, Musa L Audu, Ronald J Triolo
BACKGROUND: Implanted motor system neuroprostheses can be effective at increasing personal mobility of persons paralyzed by spinal cord injuries. However, currently available neural stimulation systems for standing employ patterns of constant activation and are unreactive to changing postural demands. METHODS: In this work, we developed a closed-loop controller for detecting forward-directed body disturbances and initiating a stabilizing step in a person with spinal cord injury...
June 10, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28595652/effect-of-cochlear-implant-surgery-on-vestibular-function-meta-analysis-study
#5
REVIEW
Iman Ibrahim, Sabrina Daniela da Silva, Bernard Segal, Anthony Zeitouni
IMPORTANCE: Vestibular disorders have been reported following cochlear implant (CI) surgery, but the literature shows a wide discrepancy in the reported clinical impact. The aim of this meta-analysis is to quantify the effect of CI before and after surgery on the outcomes of vestibular tests, postural stability, and subjective perception of dizziness. OBJECTIVE: To evaluate the effects of CI surgery on vestibular function in adult patients (≥18 years) with sensorineural hearing loss who underwent unilateral or bilateral implantation...
June 8, 2017: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28582897/reflex-mediated-dynamic-neuromuscular-stabilization-in-stroke-patients-emg-processing-and-ultrasound-imaging
#6
Hyun S Yoon, Joshua Sung H You
BACKGROUND: Postural core instability is associated with poor dynamic balance and a high risk of serious falls. Both neurodevelopmental treatment (NDT) and dynamic neuromuscular stabilization (DNS) core stabilization exercises have been used to improve core stability, but the outcomes of these treatments remain unclear. OBJECTIVE: This study was undertaken to examine the therapeutic effects of NDT and DNS core stabilization exercises on muscular activity, core stability, and core muscle thickness...
May 19, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28582894/a-study-on-trunk-muscle-activation-patterns-according-to-tilt-angle-during-whole-body-tilts
#7
Sun Hye Shin, Seung Rok Kang, Tae-Kyu Kwon, Changho Yu
BACKGROUND: Lower back pain has a lifetime prevalence of 80% for people in a modern society, and in recent years, spinal stabilization movement has been highlighted as a method to treat lower back pain and an unbalanced position. OBJECTIVE: The objectives of this study were to assess the trunk muscle activities in accordance with the tilt angles (10∘, 20∘, 30∘, 40∘) during trunk tilt exercises with a 3D dynamic exercise device. METHODS: Active tilt mode (a self-generated active movement in the angle and direction steered by the user) was used in this study...
May 19, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28555091/gravity-compensation-and-feedback-of-ground-reaction-forces-for-biped-balance-control
#8
Satoshi Ito, Shingo Nishio, Yuuki Fukumoto, Kojiro Matsushita, Minoru Sasaki
This paper considers the balance control of a biped robot under a constant external force or on a sloped ground. We have proposed a control method with feedback of the ground reaction forces and have realized adaptive posture changes that ensure the stability of the robot. However, fast responses have not been obtained because effective control is achieved by an integral feedback that accompanies a time delay necessary for error accumulation. To improve this response, here, we introduce gravity compensation in a feedforward manner...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28554054/military-personnel-with-self-reported-ankle-injuries-do-not-demonstrate-deficits-in-dynamic-postural-stability-or-landing-kinematics
#9
Heather M Bansbach, Mita T Lovalekar, John P Abt, Deirdre Rafferty, Darcie Yount, Timothy C Sell
BACKGROUND: The odds of sustaining non-contact musculoskeletal injuries are higher in Special Operations Forces operators than in infantry soldiers. The ankle is one of the most commonly injured joints, and once injured can put individuals at risk for reinjury. The purpose of this study was to determine if any differences in postural stability and landing kinematics exist between operators with a self-reported ankle injury in the past one year and uninjured controls. METHODS: A total of 55 Special Operations Forces operators were included in this analysis...
May 19, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28544951/clinical-balance-scales-indicate-worse-postural-control-in-people-with-parkinson-s-disease-who-exhibit-freezing-of-gait-compared-to-those-who-do-not-a-meta-analysis
#10
REVIEW
Esther M J Bekkers, Bauke W Dijkstra, Kim Dockx, Elke Heremans, Sabine M P Verschueren, Alice Nieuwboer
Postural instability and freezing of gait (FOG) are key features of Parkinson's disease (PD) that are closely related to falls. Uncovering the postural control differences between individuals with and without FOG contributes to our understanding of the relationship between these phenomena. The objective of this meta-analysis was to investigate whether postural control deficits, as detected by clinical balance scales, were more apparent in FOG+ compared to FOG-. Furthermore, we aimed to identify whether different scales were equally sensitive to detect postural control deficits and whether medication affected postural control differentially in each subgroup...
July 2017: Gait & Posture
https://www.readbyqxmd.com/read/28533748/cerebral-dynamics-during-the-observation-of-point-light-displays-depicting-postural-adjustments
#11
Eduardo F Martins, Thiago Lemos, Ghislain Saunier, Thierry Pozzo, Daniel Fraiman, Claudia D Vargas
Objective: As highly social creatures, human beings rely part of their skills of identifying, interpreting, and predicting the actions of others on the ability of perceiving biological motion. In the present study, we aim to investigate the electroencephalographic (EEG) cerebral dynamics involved in the coding of postural control and examine whether upright stance would be codified through the activation of the temporal-parietal cortical network classically enrolled in the coding of biological motion. Design: We registered the EEG activity of 12 volunteers while they passively watched point light displays (PLD) depicting quiet stable (QB) and an unstable (UB) postural situations and their respective scrambled controls (QS and US)...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28507630/relationship-between-gait-parameters-and-postural-stability-in-early-and-late-parkinson-s-disease-and-visual-feedback-based-balance-training-effects
#12
Mohieldin M Ahmed, Douaa M Mosalem, Aziz K Alfeeli, Ayyoub B Baqer, Doaa Youssry Soliman
BACKGROUND: Gait disorders or postural instability has been done before. However, lack of reviews has addressed the relation between gait and postural stability in Parkinson's disease (PD). AIM: The aim was to evaluate the relation between gait parameters and postural stability in early and late stages of PD. MATERIALS AND METHODS: The forty-one idiopathic PD patients were divided into two groups into a group (A) considered as early PD and group (B) considered as late ambulant PD...
April 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28501732/asymmetrical-stabilization-and-mobilization-exploited-during-static-single-leg-stance-and-goal-directed-kicking
#13
Adam C King, Zheng Wang
The motor control properties of the right and left legs are dependent on the stabilization and mobilization features of the motor tasks. The current investigation examined the right and left leg control differences - interlateral asymmetries - during static single leg stance and dynamic goal directed kicking with an emphasis of the asymmetrical stabilization and mobilization components of movements. Ten young, healthy, right-leg preferred individuals with minimal kicking experience completed both tests on each limb...
May 11, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28500909/development-and-testing-of-a-moment-based-coactivation-index-to-assess-complex-dynamic-tasks-for-the-lumbar-spine
#14
Peter Le, Alexander Aurand, Jonathan S Dufour, Gregory G Knapik, Thomas M Best, Safdar N Khan, Ehud Mendel, William S Marras
BACKGROUND: Many methods exist to describe coactivation between muscles. However, most methods have limited capability in the assessment of coactivation during complex dynamic tasks for multi-muscle systems such as the lumbar spine. The ability to assess coactivation is important for the understanding of neuromuscular inefficiency. In the context of this manuscript, inefficiency is defined as the effort or level of coactivation beyond what may be necessary to accomplish a task (e.g., muscle guarding during postural stabilization)...
May 5, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28485669/postural-stability-in-a-population-of-dancers-healthy-non-dancers-and-vestibular-neuritis-patients
#15
Eduardo Martin-Sanz, Isabel Ortega Crespo, Jonathan Esteban-Sanchez, Ricardo Sanz
INTRODUCTION: Several studies have indicated better balance control in dancers than in control participants, but some controversy remains. The aim of our study is to evaluate the postural stability in a cohort of dancers, non-dancers, compensated, and non-compensated unilateral vestibular neuritis (VN). METHODS: This is a prospective study of control subjects, dancers, and VN patients between June 2009 and December 2015. Dancers from the Dance Conservatory of Madrid and VN patients were referred to our department for analysis...
May 9, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28485653/vestibular-rehabilitation-in-benign-paroxysmal-positional-vertigo-reality-or-fiction
#16
Federica Bressi, Paola Vella, Manuele Casale, Antonio Moffa, Lorenzo Sabatino, Michele Antonio Lopez, Francesco Carinci, Rocco Papalia, Fabrizio Salvinelli, Silvia Sterzi
The objective of this article is to systematically review the evidence on the effectiveness of vestibular rehabilitation (VR) in patients with benign paroxysmal positional vertigo (BPPV). Relevant published studies about VR in BPPV were searched in PubMed, Google Scholar and Ovid using various keywords. We included trials that were available in the English language and did not apply publication year or publication status restrictions. Studies based on the VR in other peripheral and/or central balance disorders are excluded...
May 1, 2017: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/28456902/cerebellar-transcranial-direct-current-stimulation-ctdcs-impairs-balance-control-in-healthy-individuals
#17
Águida Foerster, Lorena Melo, Marina Mello, Rebeca Castro, Lívia Shirahige, Sérgio Rocha, Kátia Monte-Silva
The cerebellum plays an important role in the planning, initiation and stability of movements, as well as in postural control and balance. Modulation of neural regions underlying balance control may be a potential alternative to treat balance impairments in cerebellar patients. Transcranial direct current stimulation (tDCS) is a noninvasive and safe tool capable to modulate cerebellar activity. We aim to investigate the effects of cerebellar tDCS (ctDCS) on postural balance in healthy individuals. Fifteen healthy and right-handed subjects were submitted to three sessions of ctDCS (anodal, cathodal and sham), separated by at least 48 h...
April 29, 2017: Cerebellum
https://www.readbyqxmd.com/read/28446583/a-shared-neural-integrator-for-human-posture-control
#18
Stephanie E Haggerty, Amy R Wu, Kathleen H Sienko, Arthur D Kuo
Control of standing posture requires fusion of multiple inputs including visual, vestibular, somatosensory, and other sensors, each having distinct dynamics. The semicircular canals, for example, have a high-pass filter response to angular velocity, quickly sensing a step change in head rotational velocity followed by a decay. To stabilize gaze despite this decay, the central nervous system supplies a neural "velocity storage" integrator, a filter that extends the angular velocity signal. Similar filtering might contribute temporal dynamics to posture control, as suggested by some state estimation models...
April 26, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28442732/human-bipedal-instability-in-tree-canopy-environments-is-reduced-by-light-touch-fingertip-support
#19
L Johannsen, S R L Coward, G R Martin, A M Wing, A van Casteren, W I Sellers, A R Ennos, R H Crompton, S K S Thorpe
Whether tree canopy habitats played a sustained role in the ecology of ancestral bipedal hominins is unresolved. Some argue that arboreal bipedalism was prohibitively risky for hominins whose increasingly modern anatomy prevented them from gripping branches with their feet. Balancing on two legs is indeed challenging for humans under optimal conditions let alone in forest canopy, which is physically and visually highly dynamic. Here we quantify the impact of forest canopy characteristics on postural stability in humans...
April 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28438514/components-of-standing-postural-control-evaluated-in-pediatric-balance-measures-a-scoping-review
#20
REVIEW
Kathryn M Sibley, Marla K Beauchamp, Karen Van Ooteghem, Marie Paterson, Kristy Dm Wittmeier
OBJECTIVE: To identify measures of standing balance validated in pediatric populations and determine the components of postural control captured in each tool. DATA SOURCES: Electronic searches of Medline, Embase, and CINAHL databases using key word combinations of postural balance/ equilibrium, psychometrics/ reproducibility of results/ predictive value of tests, child/ pediatrics; grey literature; and hand searches. STUDY SELECTION: Inclusion criteria were measures with a stated objective to assess balance, pediatric (<=18 years) populations, at least one psychometric evaluation, one standing task, standardized protocol and evaluation criteria, and published in English...
April 21, 2017: Archives of Physical Medicine and Rehabilitation
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