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Postural stability

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https://www.readbyqxmd.com/read/29150315/surgical-options-for-osteoporotic-vertebral-compression-fractures-complicated-with-spinal-deformity-and-neurologic-deficit
#1
Kalliopi Alpantaki, Michael Dohm, Panagiotis Korovessis, Alexander G Hadjipavlou
INTRODUCTION: This paper describes surgical options for Osteoporotic vertebral compression fracture (OVCF) with acute flexible or chronic rigid kyphosis, and pseudarthrosis complicated with pain and neurologic deficit. METHODS: This study has two components. a) A prospective clinical study of surgical treatment of 31 patients (age: 69±11 years) with either acute flexible or progressive pseudarthrotic kyphosis manifested with severe pain or neurological deficit between 2010 and 2014...
November 12, 2017: Injury
https://www.readbyqxmd.com/read/29134294/destabilization-of-the-upright-posture-through-elevation-of-the-center-of-mass
#2
Natalia Dounskaia, Daniel Peterson, Ryan P Bruhns
The inverted pendulum model predicts that the major challenge for neural control of the upright posture is the inherent instability of the body due to the center of mass (COM) being above the base of support (BOS). If so, even slight elevation of the COM may substantially destabilize posture. The destabilizing effect of heavy load positioned above the COM has been demonstrated. We examined sensitivity of posture to light (1-5% of body weight) load by placing weights on the shoulders and assessing functional reach distance in the forward, right, and left directions and postural sway during quiet stance...
November 13, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29131721/postural-stability-in-healthy-child-and-youth-athletes-the-effect-of-age-sex-and-concussion-related-factors-on-performance
#3
Melissa Paniccia, Katherine E Wilson, Anne Hunt, Michelle Keightley, Karl Zabjek, Tim Taha, Isabelle Gagnon, Nick Reed
BACKGROUND: Postural stability plays a key role in sport performance, especially after concussion. Specific to healthy child and youth athletes, little is known about the influence development and sex may have on postural stability while considering other subjective clinical measures used in baseline/preinjury concussion assessment. This study aims to describe age- and sex-based trends in postural stability in uninjured child and youth athletes at baseline while accounting for concussion-related factors...
November 1, 2017: Sports Health
https://www.readbyqxmd.com/read/29126606/balance-study-in-asymptomatic-subjects-determination-of-significant-variables-and-reference-patterns-to-improve-clinical-application
#4
Juan de la Torre, Javier Marin, Jose J Marin, Jose M Auria, Maria B Sanchez-Valverde
Postural control is essential when carrying out everyday activities and its possible disorders have a very significant impact on personal autonomy. To provide the means to accurately measure postural control in the clinical environment, this study checks and discusses the suitability of procedures for a new balance assessment system with a stabilometric platform (MoveHuman-Dyna © UZ-IDERGO), which meets the criteria of clinical stabilometric standardisation established by the International Society for Posture and Gait Research (ISPGR) at the Bologna meeting (2009)...
November 7, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29114889/the-contribution-of-cochlear-implants-to-postural-stability
#5
Corey S Shayman, Martina Mancini, Tyler S Weaver, Laurie A King, Timothy E Hullar
OBJECTIVES: To determine whether spatial auditory cues provided by cochlear implants can improve postural balance in adults with severe deafness. METHODS: In the presence of spatial white noise, 13 adult cochlear implantees wore head and lumbar-mounted inertial sensors while standing in the dark for 30 seconds in two auditory conditions: hearing assistive devices on and off. RESULTS: Stability was improved with implants on (aided condition) compared to off (unaided condition) with respect to differences in mean head velocity (Cohen's d = 0...
November 8, 2017: Laryngoscope
https://www.readbyqxmd.com/read/29114533/effects-of-whole-body-vibration-training-and-mental-training-on-mobility-neuromuscular-performance-and-muscle-strength-in-older-men
#6
Maryam Goudarzian, Samira Ghavi, Ardalan Shariat, Hossein Shirvani, Mostafa Rahimi
This study was designed to evaluate the effects of whole body vibration (WBV) exercise, mental training (MT), and the concurrent effect of WBV and MT on lower body balance, neuromuscular performance, and leg muscle strength in elderly men. In a randomized control trial study with parallel group design, 42 older men (mean±standard deviation age, 68±5.78 years) were randomly divided into four groups: WBV (n=11), MT (n=12), WBV+MT (n=10), and control (n=9) groups. The protocol of training consisted of three sessions per week for 8 weeks and about 30 min for each session...
October 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29111631/physical-performance-characteristics-between-male-and-female-youth-surfing-athletes
#7
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/29110077/exploring-the-relationship-between-threat-related-changes-in-anxiety-attention-focus-and-postural-control
#8
Kyle J Johnson, Martin Zaback, Craig D Tokuno, Mark G Carpenter, Allan L Adkin
Individuals report directing attention toward and away from multiple sources when standing under height-related postural threat, and these changes in attention focus are associated with postural control modifications. As it is unknown whether these changes generalize to other types of threat situations, this study aimed to quantify changes in attention focus and examine their relationship with postural control changes in response to a direct threat to stability. Eighty young adults stood on a force plate fixed to a translating platform...
November 6, 2017: Psychological Research
https://www.readbyqxmd.com/read/29103600/upper-body-accelerations-during-planned-gait-termination-in-young-and-older-women
#9
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/29102878/effects-of-horizontal-shoulder-abduction-and-adduction-on-the-activity-and-strength-of-the-scapular-protractors
#10
Sung-Hoon Jung, Ui-Jae Hwang, Jun-Hee Kim, Gyeong-Tae Gwak, Oh-Yun Kwon
Increased activity of the serratus anterior (SA) muscle combined with decreased activity of the pectoralis major (PM) muscle during scapular protraction exercise is a widely used method for selective strengthening of the former muscle. However, the role played by the PM during maximal scapular protraction remains unclear. The objective of our study was to investigate the effects of horizontal shoulder abduction (decreasing PM activity) and adduction (increasing activity) on the strength and activity of the scapular protractors (the SA and PM) during maximal protraction...
October 27, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29098983/what-domains-of-clinical-function-should-be-assessed-after-sport-related-concussion-a-systematic-review
#11
REVIEW
Nina Feddermann-Demont, Ruben J Echemendia, Kathryn J Schneider, Gary S Solomon, K Alix Hayden, Michael Turner, Jiří Dvořák, Dominik Straumann, Alexander A Tarnutzer
BACKGROUND: Sport-related concussion (SRC) is a clinical diagnosis made after a sport-related head trauma. Inconsistency exists regarding appropriate methods for assessing SRC, which focus largely on symptom-scores, neurocognitive functioning and postural stability. DESIGN: Systematic literature review. DATA SOURCES: MEDLINE, EMBASE, PsycINFO, Cochrane-DSR, Cochrane CRCT, CINAHL, SPORTDiscus (accessed July 9, 2016). ELIGIBILITY CRITERIA FOR SELECTING STUDIES: Original (prospective) studies reporting on postinjury assessment in a clinical setting and evaluation of diagnostic tools within 2 weeks after an SRC...
June 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29095888/origin-of-directionally-tuned-responses-in-lower-limb-muscles-to-unpredictable-upper-limb-disturbances
#12
Ali Forghani, Theodore E Milner
Unpredictable forces which perturb balance are frequently applied to the body through interaction between the upper limb and the environment. Lower limb muscles respond rapidly to these postural disturbances in a highly specific manner. We have shown that the muscle activation patterns of lower limb muscles are organized in a direction specific manner which changes with lower limb stability. Ankle muscles change their activity within 80 ms of the onset of a force perturbation applied to the hand which is earlier than the onset of changes in ground reaction force, ankle angle or head motion...
2017: PloS One
https://www.readbyqxmd.com/read/29089992/corticoreticular-tract-lesion-in-children-with-developmental-delay-presenting-with-gait-dysfunction-and-trunk-instability
#13
Yong Min Kwon, Jessica Rose, Ae Ryoung Kim, Su Min Son
The corticoreticular tract (CRT) is known to be involved in walking and postural control. Using diffusion tensor tractography (DTT), we investigated the relationship between the CRT and gait dysfunction, including trunk instability, in pediatric patients. Thirty patients with delayed development and 15 age-matched, typically-developed (TD) children were recruited. Fifteen patients with gait dysfunction (bilateral trunk instability) were included in the group A, and the other 15 patients with gait dysfunction (unilateral trunk instability) were included in the group B...
September 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29089111/trunk-response-and-stability-in-standing-under-sagittal-symmetric-pull-push-forces-at-different-orientations-elevations-and-magnitudes
#14
Z El Ouaaid, A Shirazi-Adl, A Plamondon
To reduce lifting and associated low back injuries, manual material handling operations often involve pulling-pushing of carts at different weights, orientations, and heights. The loads on spine and risk of injury however need to be investigated. The aim of this study was to evaluate muscle forces, spinal loads and trunk stability in pull-push tasks in sagittal-symmetric, static upright standing posture. Three hand-held load magnitudes (80, 120 and 160 N) at four elevations (0, 20, 40 and 60 cm to the L5-S1) and 24 force directions covering all pull/push orientations were considered...
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
#15
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/29079454/the-adenosine-a2a-receptor-agonist-t1-11-ameliorates-neurovisceral-symptoms-and-extends-the-lifespan-of-a-mouse-model-of-niemann-pick-type-c-disease
#16
Antonella Ferrante, Antonella Pezzola, Andrea Matteucci, Antonella Di Biase, Lucilla Attorri, Monica Armida, Alberto Martire, Yijuang Chern, Patrizia Popoli
Niemann-Pick C is a fatal neurovisceral disorder caused, in 95% of cases, by mutation of NPC1 gene. Therapeutic options are extremely limited and new "druggable" targets are highly warranted. We previously demonstrated that the stimulation of the adenosine A2A receptor (A2AR) normalized the pathological phenotype of cellular models of NPC1. Since the validation of A2ARs as a therapeutic target for NPC1 can be obtained only conducting studies in in vivo models of the disease, in the present paper, the effects of two agonists of A2ARs were evaluated in the mouse model Balb/c Npc1(nih), hereafter indicated as NPC1-/-...
October 25, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/29063490/effect-of-somatosensory-and-neurofeedback-training-on-balance-in-older-healthy-adults-a-preliminary-investigation
#17
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/29060542/posturography-stability-score-generation-for-stroke-patient-using-kinect-fuzzy-based-approach
#18
Oishee Mazumder, Kingshuk Chakravarty, Debatri Chatterjee, Aniruddha Sinha, Abhijit Das
Aim of this paper is to formulate a posturography stability score for stroke patients using fuzzy logic. Postural instability is one of the prominent symptoms of stroke, dementia, parkinsons disease, myopathy, etc. and is the major precursor of fall. Conventional scoring techniques used to assess postural stability require manual intervention and are dependent on live interaction with physiotherapist. We propose a novel scoring technique to calculate static stability of a person using posturography features acquired by Kinect sensor, which do not require any manual intervention or expert guidance, is cost effective and hence are ideal for tele rehabilitation purpose...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29060413/influence-of-light-finger-touch-on-postural-stability-during-upright-stance-with-cold-induced-plantar-hypoesthesia
#19
Kazushige Oshita, Sumio Yano
The present study investigated the influence of light finger touch on postural stability during an upright stance with or without cold-induced plantar hypoesthesia. Participants were 21 healthy right-handed men (20-33 years), randomly assigned to a normal temperature group (NML-group; n = 11) or cold-induced plantar hypoesthesia group (COLD-group; n = 10). Participants performed two standing tasks with their eyes closed: 1) stand upright with the feet comfortably apart (normal standing); and 2) with the feet together in a side-by-side stance (Romberg standing)...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29053602/an-objective-balance-error-scoring-system-for-sideline-concussion-evaluation-using-duplex-kinect-sensors
#20
Mengqi Zhu, Zhonghua Huang, Chao Ma, Yinlin Li
Sports-related concussion is a common sports injury that might induce potential long-term consequences without early diagnosis and intervention in the field. However, there are few options of such sensor systems available. The aim of the study is to propose and validate an automated concussion administration and scoring approach, which is objective, affordable and capable of detecting all balance errors required by the balance error scoring system (BESS) protocol in the field condition. Our approach is first to capture human body skeleton positions using two Microsoft Kinect sensors in the proposed configuration and merge the data by a custom-made algorithm to remove the self-occlusion of limbs...
October 20, 2017: Sensors
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