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Postural stability

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https://www.readbyqxmd.com/read/28095109/test-retest-reliability-and-practice-effects-of-the-stability-evaluation-test
#1
Richelle M Williams, Matthew A Corvo, Kenneth C Lam, Travis A Williams, Lesley K Gilmer, Tamara C Valovich McLeod
CONTEXT: Postural control plays an essential role in concussion evaluation. The Stability Evaluation Test (SET) aims to objectively analyze postural control by measuring sway velocity on the NeuroCom's VSR portable force platform (Natus, San Carlos, CA). OBJECTIVE: To assess the test-retest reliability and practice effects of the SET protocol. DESIGN: Cohort. SETTING: Research Laboratory. PATIENTS OR OTHER PARTICIPANTS: Fifty healthy adults (males=20, females=30, age=25...
January 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28095106/gender-differences-in-static-and-dynamic-postural-stability-of-soldiers-of-the-army-s-101st-airborne-division-air-assault
#2
Timothy C Sell, Mita T Lovalekar, Takashi Nagai, Michael D Wirt, John P Abt, Scott M Lephart
CONTEXT: Postural stability is essential for injury prevention and performance. Differences between genders may affect training focus. OBJECTIVE: To examine static and dynamic postural stability (PS) in male and female Soldiers Design: Descriptive Laboratory Study. SETTING: Biomechanics laboratory. PARTICIPANTS: Twenty-five healthy female Soldiers (26.4 ± 5.3 years) and twenty-five healthy male Soldiers (26.4 ± 4.9) years matched on physical demand rating, and years of service from the Army's 101st Airborne Division (Air Assault)...
January 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28092413/disruption-of-right-posterior-parietal-cortex-by-ctbs-alters-the-control-of-body-balance-in-quiet-stance
#3
David Kaulmann, Joachim Hermsdörfer, Leif Johannsen
Control of body balance relies on the integration of multiple sensory modalities. Lightly touching an earth-fixed reference augments the control of body sway. We aimed to advance the understanding of cortical integration of an afferent signal from light fingertip contact (LT) for the stabilisation of standing body balance. Assuming that right-hemisphere Posterior Parietal Cortex (rPPC) is involved in the integration and processing of touch for postural control, we expected that disrupting rPPC would attenuate any effects of light touch...
January 16, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28079509/excellent-balance-skills-despite-active-and-inactive-juvenile-idiopathic-arthritis-unexpected-results-of-a-cross-sectional-study
#4
Josephine Merker, Matthias Hartmann, Florian Kreuzpointner, Ansgar Schwirtz, Johannes-Peter Haas
OBJECTIVES: Postural control (PC) is fundamental for human movements. Different factors, such as injuries or diseases, can adversely affect PC. The purpose of this study was to evaluate PC in juvenile idiopathic arthritis (JIA) patients with different disease activity levels in comparison to healthy peers. METHODS: JIA patients with active and inactive lower limb joints (n=36 each group) were examined. Both groups have been on medication and have had physiotherapy for at least 5 years...
January 5, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28069073/quantification-of-postural-stability-in-minimally-disabled-multiple-sclerosis-patients-by-means-of-dynamic-posturography-an-observational-study
#5
Lucia Grassi, Stefano Rossi, Valeria Studer, Gessica Vasco, Caterina Motta, Fabrizio Patanè, Enrico Castelli, Silvia Rossi, Paolo Cappa
BACKGROUND: Multiple Sclerosis (MS) is a widespread progressive neurologic disease with consequent impairments in daily activities. Disorders of balance are frequent and equilibrium tests are potentially useful to quantify disability and to verify treatment effectiveness. The fair sensitivity of the widely used not-perturbed tests to detect balance disturbances in MS patients have prompted the development of mechatronic systems capable to impose known equilibrium perturbations, in order to challenge the balance control and, consequently, to better assess the level of impairment...
January 10, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28068962/correlation-between-lumbar-dysfunction-and-fat-infiltration-in-lumbar-multifidus-muscles-in-patients-with-low-back-pain
#6
Markus Hildebrandt, Gabriela Fankhauser, André Meichtry, Hannu Luomajoki
BACKGROUND: Lumbar multifidus muscles (LMM) are important for spinal motion and stability. Low back pain (LBP) is often associated with fat infiltration in LMM. An increasing fat infiltration of LMM may lead to lumbar dysfunction. The purpose of this study was to investigate whether there is a correlation between the severity of lumbar dysfunction and the severity of fat infiltration of LMM. METHODS: In a cross-sectional study, 42 patients with acute or chronic LBP were recruited...
January 10, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28067608/continuous-cognitive-task-promotes-greater-postural-stability-than-an-internal-or-external-focus-of-attention-in-older-adults
#7
Natalie Richer, Nadia Polskaia, Yves Lajoie
: Background/Study Context: Recent evidence suggests that removing attention from postural control using either an external focus or a cognitive task will improve stability in healthy young adults. Due to increases in attentional requirements of upright stance in older adults, it is unclear if similar benefits would be observed in this population. The aim of the present study was to examine the effect of attentional focus and of a continuous cognitive task on postural control in older adults...
January 2017: Experimental Aging Research
https://www.readbyqxmd.com/read/28061401/the-effect-of-weight-bearing-asymmetry-on-dynamic-postural-stability-in-people-with-chronic-stroke
#8
Digna de Kam, Jip F Kamphuis, Vivian Weerdesteyn, Alexander C H Geurts
After stroke, weight-bearing asymmetry (WBA) towards the non-paretic side is associated with postural instability. It remains unknown whether WBA is a cause or consequence of postural instability, as both phenomena depend on stroke severity. We investigated the effect of WBA on the ability to recover from balance perturbations in people with stroke. Fourteen people in the chronic phase of stroke underwent multidirectional translational perturbations at three levels of initial WBA (0, 10 and 20% of body weight unloading of the paretic leg)...
December 21, 2016: Gait & Posture
https://www.readbyqxmd.com/read/28056109/postural-ataxia-in-cerebellar-downbeat-nystagmus-its-relation-to-visual-proprioceptive-and-vestibular-signals-and-cerebellar-atrophy
#9
Christoph Helmchen, Jan-Birger Kirchhoff, Martin Göttlich, Andreas Sprenger
BACKGROUND: The cerebellum integrates proprioceptive, vestibular and visual signals for postural control. Cerebellar patients with downbeat nystagmus (DBN) complain of unsteadiness of stance and gait as well as blurred vision and oscillopsia. OBJECTIVES: The aim of this study was to elucidate the differential role of visual input, gaze eccentricity, vestibular and proprioceptive input on the postural stability in a large cohort of cerebellar patients with DBN, in comparison to healthy age-matched control subjects...
2017: PloS One
https://www.readbyqxmd.com/read/28055084/forward-head-posture-and-activation-of-rectus-capitis-posterior-muscles
#10
Richard C Hallgren, Steven J Pierce, Dhruv B Sharma, Jacob J Rowan
CONTEXT: Rectus capitis posterior (RCP) muscles have physical attachments to the pain-sensitive spinal dura. Atrophy of these muscles is associated with chronic headache in some patients. The authors suspect that the significance of atrophy in the RCP muscles has been undervalued because the functional role of these muscles is not well defined. OBJECTIVE: To determine whether a statistically significant change in normalized levels of electromyographic activity in RCP muscles occurs when the head is voluntarily moved from a self-selected neutral head position to a protruded head position...
January 1, 2017: Journal of the American Osteopathic Association
https://www.readbyqxmd.com/read/28054910/examining-effects-of-physical-exertion-on-the-dynamic-visual-acuity-test-in-collegiate-athletes
#11
Jessie N Patterson, Anna M Murphy, Julie A Honaker
BACKGROUND: Acute symptoms of dizziness and/or imbalance commonly experienced in athletes postconcussion are speculated to arise from dysfunction at multiple levels (i.e., inner ear or central vestibular system) to appropriately integrate afferent sensory information. Disruption along any pathway of the balance system can result in symptoms of dizziness, decreased postural control function (vestibulospinal reflex), and reduced vestibulo-ocular reflex function. This may also lead to decreased gaze stability with movements of the head and may account for symptoms of blurred vision or diplopia reported in almost half of athletes sustaining a concussion...
January 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28053843/influence-of-obesity-on-postural-stability-in-young-adults
#12
Sung Min Son
OBJECTIVES: The purpose of this study was to determine whether obesity is associated with less postural stability in young adults, and whether it is influenced by anterior pelvic tilt angle and sensory dysfunction. METHODS: Center of gravity (COG) velocity and total sway distance with eyes open or eyes closed on firm or foam floors were determined in 12 obese individuals and 12 individuals with normal weight. RESULTS: On firm and foam floors with eyes closed, center of gravity velocity and total sway distance were significantly greater in the obese group than in the normal-weight group...
December 2016: Osong Public Health and Research Perspectives
https://www.readbyqxmd.com/read/28041534/designing-prototype-making-and-evaluating-a-mechanical-aid-device-for-patient-transfer-between-bed-and-stretcher
#13
Hamid Salmani Nodooshan, Alireza Choobineh, Mohsen Razeghi, Taymaz Shahnazar
INTRODUCTION: The present study aimed at designing, prototype making and evaluating a new assistive device to improve patient transfer conditions. METHODS: A new aid device for patient transfer was designed and its prototype was made. Comfort and perceived physical exertion of users and stability and applicability of the device were examined. The test subjects included 37 healthcare workers (HCW) of a hospital with patient transfer experience. The data collection tools consisted of visual analog scales (VAS) and Borg's rating physical effort (RPE) scale...
December 31, 2016: International Journal of Occupational Safety and Ergonomics: JOSE
https://www.readbyqxmd.com/read/28038342/atypical-anticipatory-postural-adjustments-during-gait-initiation-among-individuals-with-sub-acute-stroke
#14
Roshanth Rajachandrakumar, Julia E Fraser, Alison Schinkel-Ivy, Elizabeth L Inness, Lou Biasin, Karen Brunton, William E McIlroy, Avril Mansfield
Anticipatory postural adjustments, executed prior to gait initiation, help preserve lateral stability when stepping. Atypical patterns of anticipatory activity prior to gait initiation may occur in individuals with unilateral impairment (e.g., stroke). This study aimed to determine the prevalence, correlates, and consequences of atypical anticipatory postural adjustment patterns prior to gait initiation in a sub-acute stroke population. Forty independently-ambulatory individuals with sub-acute stroke stood on two force plates and initiated gait at a self-selected speed...
December 21, 2016: Gait & Posture
https://www.readbyqxmd.com/read/28036322/effects-of-femoral-rotational-taping-on-dynamic-postural-stability-in-female-patients-with-patellofemoral-pain
#15
Chen-Yi Song, Jiu-Jenq Lin, Alison H Chang
OBJECTIVE: To investigate the effects of femoral rotational taping on task performance, dynamic postural control, and pain during the Star Excursion Balance Test (SEBT) in patients with patellofemoral pain (PFP) compared to healthy controls. DESIGN: Case-control study, pretest-posttest. SETTING: Laboratory. PARTICIPANTS: Twenty-four female participants (16 with PFP, 8 controls). INTERVENTIONS: Participants in both the PFP and control groups performed SEBT with no taping, sham taping, and femoral rotational taping...
October 10, 2016: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28032032/extrinsic-visual-feedback-and-additional-cognitive-physical-demands-affect-single-limb-balance-control-in-individuals-with-ankle-instability
#16
You-Jou Hung, Jacob Miller
AIM: To investigate the impact of extrinsic visual feedback and additional cognitive/physical demands on single-limb balance in individuals with ankle instability. METHODS: Sixteen subjects with ankle instability participated in the study. Ankle instability was identified using the Cumberland Ankle Instability Tool (CAIT). The subject's unstable ankle was examined using the Athletic Single Leg Stability Test of the Biodex Balance System with 4 different protocols: (1) default setting with extrinsic visual feedback from the monitor; (2) no extrinsic visual feedback; (3) no extrinsic visual feedback with cognitive demands; and (4) no extrinsic visual feedback with physical demands...
December 18, 2016: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28030997/mandibular-position-influence-on-pilots-postural-balance-analyzed-under-dynamic-conditions
#17
Alberto Baldini, Alessandro Nota, Clementina Cioffi, Fabiana Ballanti, Simona Tecco
OBJECTIVE: The aim of this study is to evaluate the influence of the mandibular position on the postural stability in a sample of civilian and military pilots. METHODS: Twenty military pilots (males, mean age 35.15 ± 3.14 years) and 17 civilian pilots (males, mean 34.91 ± 2.15 years) were enrolled in this study and underwent a Sensory Organization Test (SOT) using the EquiTest® (NeuroCom International Inc., Clackamas, OR, USA) computerized dynamic posturography...
December 29, 2016: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28026984/examining-changes-to-center-of-pressure-during-the-first-trials-of-wii-gameplay
#18
Rebecca Reed-Jones, Laura Carvalho, Chelsey Sanderson, William Montelpare, Nicholas Murray, Douglas Powell
OBJECTIVE: Use of the Nintendo Wii™ as a balance assessment and rehabilitation tool continues to grow. One advantage of the Wii is that games can serve as a virtual reality training tool; however, a disadvantage of the Wii is the human-machine interface and the learning effect over multiple trials. The purpose of this study was to assess changes in postural control during Wii gameplay over a series of trials in novice players. MATERIALS AND METHODS: Thirty-one university athletes (aged 18-25 years) completed four trials of the Nintendo Wii Fit™ soccer heading (SH) balance game...
December 27, 2016: Games for Health
https://www.readbyqxmd.com/read/28009675/effects-of-foot-and-ankle-devices-on-balance-gait-and-falls-in-adults-with-sensory-perception-loss-a-systematic-review
#19
Joanne Paton, Anna L Hatton, Keith Rome, Bridie Kent
BACKGROUND: Foot and ankle devices are being developed as a method of preventing people with sensory perception loss sustaining a fall. Such devices are believed to work by reducing the likelihood of a fall by improving the balance and gait of the user. OBJECTIVES: The objective of the review was to evaluate the effectiveness of foot and ankle devices for the prevention of falls and the improvement of balance and gait in adults with sensory perception loss. INCLUSION CRITERIA TYPES OF PARTICIPANTS: Participants were community-dwelling adults with bilateral pathological sensory perception loss...
December 2016: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/28004203/aging-effect-on-muscle-synergies-in-stepping-forth-during-a-forward-perturbation
#20
Yun Wang, Kazuhiko Watanabe, Tadayoshi Asaka
PURPOSE: We explored changes in muscle interactions during healthy aging as a window into neural control strategies of postural preparation to action/perturbation. In particular, we quantified the strength of multi-muscle synergies stabilizing the center of pressure (COP) displacement during the preparation for making a step associated with support surface translations. METHODS: Young and elderly subjects were required to make a step in response to support surface perturbations...
December 21, 2016: European Journal of Applied Physiology
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