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Dynamic postural stability

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https://www.readbyqxmd.com/read/29326906/a-comparison-of-ground-reaction-force-components-according-to-the-foothold-heights-in-16-t-truck-during-downward-step
#1
Seung-Hyun Hyun, Che-Cheong Ryew
The aim of this study is to compare and analyze the components of ground reaction force (GRF) relative to the foothold heights during downward step of 16-t truck. Adult males (n= 10) jumped downward from each 1st, 2nd, 3rd foothold step and driver's seat orderly using hand rail. Sampling rate of force components of 3 axis (medial-lateral [ML] GRF, anterior-posterior [AP] GRF, peak vertical force [PVF]), variables (COPx, COPy, COP area) of center of pressure (COP), loading rate, and stability index (ML, AP, vertical, and dynamic postural stability index [DPSI]) processed from GRF system was cut off at 1,000 Hz...
December 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29283019/effects-of-different-foot-progression-angles-and-platform-settings-on-postural-stability-and-fall-risk-in-healthy-and-medial-knee-osteoarthritic-adults
#2
Saad Jawaid Khan, Soobia Saad Khan, Juliana Usman, Abdul Halim Mokhtar, Noor Azuan Abu Osman
This study aims to investigate the effects of varying toe angles at different platform settings on Overall Stability Index of postural stability and fall risk using Biodex Balance System in healthy participants and medial knee osteoarthritis patients. Biodex Balance System was employed to measure postural stability and fall risk at different foot progression angles (ranging from -20° to 40°, with 10° increments) on 20 healthy (control group) and 20 knee osteoarthritis patients (osteoarthritis group) randomly (age: 59...
December 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29278536/ability-of-functional-performance-tests-to-identify-individuals-with-chronic-ankle-instability-a-systematic-review-with-meta-analysis
#3
Adam B Rosen, Alan R Needle, Jupil Ko
OBJECTIVE: The purpose of this systematic review with meta-analysis was to determine the effectiveness of functional performance tests (FPTs) in differentiating between individuals with chronic ankle instability (CAI) and healthy controls. DATA SOURCES: The National Library of Medicine Catalog (PubMed), the Cumulative Index for Nursing and Allied Health Literature (CINAHL), and the SPORTDiscus, from inception to June 2017 were searched. Search terms consisted of: "Functional Performance Test*" OR "Dynamic Balance Test*" OR "Postural Stability Test*" OR "Star Excursion Balance Test*" OR "Hop Test*" AND "Ankle Instability" OR "Ankle Sprain...
December 22, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/29277058/the-ifst-an-instrumented-version-of-the-fukuda-stepping-test-for-balance-assessment
#4
Valeria Belluscio, Elena Bergamini, Marco Iosa, Marco Tramontano, Giovanni Morone, Giuseppe Vannozzi
The maintenance of the upright posture during dynamic balance requires the integration of sensory inputs regulated by the brain. After a neurological event, the assessment of balance control impairments is crucial for supporting health professionals in the design of personalized rehabilitation protocols. A commonly used test to assess balance ability is the Fukuda Stepping Test (FST). However, the clinical parameters traditionally considered are not fully representative of the patient's motor ability. The purpose of this study was to devise an instrumented version of the FST (iFST) that embodies inertial sensors and allows to obtain individual motor strategy information...
December 16, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29260355/vestibular-impairment-in-chronic-inflammatory-demyelinating-polyneuropathy
#5
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/29239806/development-of-postural-control-and-maturation-of-sensory-systems-in-children-of-different-ages-a-cross-sectional-study
#6
Cristina Dos Santos Cardoso de Sá, Catarina Costa Boffino, Renato Teodoro Ramos, Clarice Tanaka
OBJECTIVE: To evaluate the stability, postural adjustments and contributions of sensory information for postural control in children. METHODS: 40 boys and 40 girls were equally divided into groups of 5, 7, 9 and 12 years (G5, G7, G9 and G12). All children were submitted to dynamic posturography using a modified sensory organization test, using four sensory conditions: combining stable or sway referencing platform with eyes opened, or closed. The area and displacements of the center of pressure were used to determine stability, while the adjustments were used to measure the speed of the center of pressure displacements...
November 8, 2017: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/29215505/dynamic-fluctuation-of-truncal-shift-parameters-during-quiet-standing-in-healthy-young-individuals
#7
So Kato, Kai Lon Fok, Jae W Lee, Kei Masani
STUDY DESIGN: Retrospective analysis. OBJECTIVE: To describe the dynamic fluctuation of truncal shift parameters during quiet standing in healthy young individuals using biomechanical analyses. SUMMARY OF BACKGROUND DATA: Coronal decompensation (CD) and sagittal vertical axis (SVA) are the key radiographic parameters to assess static truncal stability, with the known cut-off value of 4 cm for SVA in determining severity of spinal deformity...
December 5, 2017: Spine
https://www.readbyqxmd.com/read/29211742/fear-of-falling-and-postural-reactivity-in-patients-with-glaucoma
#8
Fábio B Daga, Alberto Diniz-Filho, Erwin R Boer, Carolina P B Gracitelli, Ricardo Y Abe, Felipe A Medeiros
PURPOSE: To investigate the relationship between postural metrics obtained by dynamic visual stimulation in a virtual reality environment and the presence of fear of falling in glaucoma patients. METHODS: This cross-sectional study included 35 glaucoma patients and 26 controls that underwent evaluation of postural balance by a force platform during presentation of static and dynamic visual stimuli with head-mounted goggles (Oculus Rift). In dynamic condition, a peripheral translational stimulus was used to induce vection and assess postural reactivity...
2017: PloS One
https://www.readbyqxmd.com/read/29202661/effects-of-backpack-load-and-positioning-on-nonlinear-gait-features-in-young-adults
#9
Fábio Barbosa Rodrigues, Rina Márcia Magnani, Georgia Cristina Lehnen, Gustavo Souto de Sá E Souza, Adriano O Andrade, Marcus Fraga Vieira
Overloaded backpacks can cause changes in posture and gait dynamic balance. Therefore, the aim of this study was to assess gait regularity and local dynamic stability in young adults as they carried a backpack in different positions, and with different loads. Twenty-one healthy young adults participated in the study, carrying a backpack that was loaded with 10% and 20% of their body weight (BW). The participants walked on a level treadmill at their preferred walking speeds for 4 min under different conditions of backpack load and position (i...
December 5, 2017: Ergonomics
https://www.readbyqxmd.com/read/29198270/contributions-to-understanding-the-neuropsychology-of-alcoholism-an-ins-legacy
#10
Edith V Sullivan
Alcohol use disorder (AUD) has been a major cause of family, social, and personal strife for centuries, with current prevalence estimates of 14% for 12-month and 29% lifetime AUD. Neuropsychological testing of selective cognitive, sensory, and motor functions complemented with in vivo brain imaging has enabled tracking the consequences of AUD, which follows a dynamic course of development, maintenance, and recovery or relapse. Controlled studies of alcoholism reviewed herein provide evidence for disruption of selective functions involving executive, visuospatial, mnemonic, emotional, and attentional processes, response inhibition, prosody, and postural stability and brain systems supporting these functions...
October 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/29184756/balance-control-during-gait-initiation-state-of-the-art-and-research-perspectives
#11
REVIEW
Eric Yiou, Teddy Caderby, Arnaud Delafontaine, Paul Fourcade, Jean-Louis Honeine
It is well known that balance control is affected by aging, neurological and orthopedic conditions. Poor balance control during gait and postural maintenance are associated with disability, falls and increased mortality. Gait initiation - the transient period between the quiet standing posture and steady state walking - is a functional task that is classically used in the literature to investigate how the central nervous system (CNS) controls balance during a whole-body movement involving change in the base of support dimensions and center of mass progression...
November 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/29184276/comparison-of-the-effects-of-visual-feedback-training-and-unstable-surface-training-on-static-and-dynamic-balance-in-patients-with-stroke
#12
Hyuck-Soon Hwang, Jin-Hong Kim, Bo-Ram Choi
[Purpose] This study compared the effects of visual feedback training and unstable surface training on the static and dynamic balance of stroke patients. [Subjects and Methods] The study enrolled 20 stroke patients and randomly assigned them to visual feedback training and unstable surface training groups. Both groups performed 30 minutes of conventional exercise therapy twice a week for 4 weeks. In addition, the subjects in the visual feedback training group completed a visual feedback training regimen and the subjects in the unstable surface training group completed training on an unstable surface (30-minute session three times a week for 4 weeks in both groups)...
October 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29175640/an-exploratory-study-examining-factors-underpinning-postural-instability-in-older-adults-with-idiopathic-neck-pain
#13
June Quek, Julia Treleaven, Ross A Clark, Sandra G Brauer
There is limited understanding of potential mechanisms underpinning postural control deficits in people with neck pain. This study examined several characteristics that might explain impaired postural stability in a group of older adults with neck pain, and compared the results in this cohort with that of asymptomatic controls. In this cross-sectional study we compared physical activity, lower limb motor and sensory function, vestibular and visual function, falls efficacy and dizziness handicap in 84 older adults with (n=35, age 69...
November 16, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29154407/exercise-dynamic-stability-under-unstable-conditions-increases-muscle-strength-and-balance-ability-in-the-elderly
#14
Azza Hamed, Sebastian Bohm, Falk Mersmann, Adamantios Arampatzis
The purpose of the current study was to assess the effectiveness of a specific exercise intervention of mechanisms to control dynamic postural stability under unstable conditions in old adults. Forty-seven old adults (65-80 years) were assigned to two experimental groups (muscle strength group, n=15, perturbation-based group, n=16) and a control group (n=16). The strength group performed resistance exercises for legs and trunk muscles, while the perturbation-based group exercised mechanisms of dynamic stability under unstable conditions...
November 20, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29111631/physical-performance-characteristics-between-male-and-female-youth-surfing-athletes
#15
Bruno A Ferreira da Silva, Filipe M Clemente
BACKGRAUND: Despite some knowledge about the fitness levels of elite surfers, there is limited published research examining gender differences, particularly in young athletes. The purpose of this study was to describe and compare the sex differences in physical performance characteristics of elite youth surfers. It was also aimed to study the association between physical performance variables. METHODS: This longitudinal prospective study was based on a total of twenty male and female youth surfers performed a battery of physical performance tests: anthropometrics, weight-bearing dorsiflexion test, Functional Movement Screen, lower extremity dynamic stability, lower limb dynamic strength, paddling and apnea test...
November 7, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29103600/upper-body-accelerations-during-planned-gait-termination-in-young-and-older-women
#16
Lorenzo Rum, Luca Laudani, Andrea Macaluso, Giuseppe Vannozzi
Transitory tasks, such as gait termination, involve interactions between neural and biomechanical factors that challenge postural stability and head stabilization patterns in older adults. The aim of the study was to compare upper body patterns of acceleration during planned gait termination at different speeds between young and older women. Ten young and 10 older women were asked to carry out three gait termination trials at slow, comfortable and fast speed. A stereophotogrammetric system and a 15-body segments model were used to calculate antero-posterior whole-body Center of Mass (AP CoM) speed and to reconstruct the centroids of head, trunk and pelvis segments...
October 25, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29081425/effect-of-visual-input-on-postural-stability-in-young-adults-with-chronic-motion-sensitivity-a-controlled-cross-sectional-study
#17
Ahmad A Alharbi, Eric G Johnson, Abdulaziz A Albalwi, Noha S Daher, Tim K Cordett, Oluwaseun I Ambode, Fahad H Alshehri
BACKGROUND: Chronic motion sensitivity (CMS) has been defined as a feeling of un-wellness elicited by either actual or perceived motion. CMS is a common condition and is more prevalent in females than in males. In addition to a variety of symptoms, young adults with CMS have less postural stability than those without CMS. OBJECTIVE: To determine whether dependence on visual cues for postural stability is different between young adults with and without CMS, and whether it differs by gender within each group...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29063490/effect-of-somatosensory-and-neurofeedback-training-on-balance-in-older-healthy-adults-a-preliminary-investigation
#18
Atefeh Azarpaikan, Hamidreza Taheri Torbati
The aim of this study was to assess the effectiveness of balance training with somatosensory and neurofeedback training on dynamic and static balance in healthy, elderly adults. The sample group consisted of 45 healthy adults randomly assigned to one of the three test groups: somatosensory, neurofeedback, and a control. Individualization of the balance program started with pre-tests for static and dynamic balances. Each group had 15- and 30-min training sessions. All groups were tested for static (postural stability) and dynamic balances (Berg Balance Scale) in acquisition and transfer tests (fall risk of stability and timed up and go)...
October 23, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/29053448/the-effects-of-coding-schemes-on-vibrotactile-biofeedback-for-dynamic-balance-training-in-parkinson-s-disease-and-healthy-elderly-individuals
#19
Beom-Chan Lee, Alberto Fung, Timothy A Thrasher
A coding scheme for earlier versions of vibrotactile biofeedback systems for balance-related applications was primarily binary in nature, either off or on at a given threshold (range of postural tilt), making it unable to convey information about error magnitude. The purpose of this study was to explore the effects of two coding schemes (binary vs. continuous) for vibrotactile biofeedback during dynamic weight-shifting exercises that are common physical therapists' recommended balance exercises used in clinical settings...
October 16, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/29022403/developmental-approach-for-behavior-learning-using-primitive-motion-skills
#20
Farhan Dawood, Chu Kiong Loo
Imitation learning through self-exploration is essential in developing sensorimotor skills. Most developmental theories emphasize that social interactions, especially understanding of observed actions, could be first achieved through imitation, yet the discussion on the origin of primitive imitative abilities is often neglected, referring instead to the possibility of its innateness. This paper presents a developmental model of imitation learning based on the hypothesis that humanoid robot acquires imitative abilities as induced by sensorimotor associative learning through self-exploration...
August 6, 2017: International Journal of Neural Systems
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