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Postural stability

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https://www.readbyqxmd.com/read/29786676/-the-modern-approaches-to-the-restoration-of-postural-balance-in-the-patients-suffering-from-the-consequences-of-an-acute-cerebrovascular-accident-cva
#1
S A Volovets, E Y Sergeenko, L Y Darinskaya, B A Polyaev, Y A Yashinina, M A Isaeva, I V Zhitareva, A N Lobov, T I Panova
BACKGROUND: the most frequent and severe consequences of an acute cerebrovascular accident (CVA) are locomotor and coordination disorders which significantly increase the risk of falling in a static position and when walking. The methods used for the rehabilitation of the affected patients are designed in the first place to enable the patients to acquire the skills necessary for maintaining the static balance. The modern equipment allows to carry out coordination training in the static position and also during walking...
May 21, 2018: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/29786465/trunk-stability-enabled-by-non-invasive-spinal-electrical-stimulation-after-spinal-cord-injury
#2
Mrinal Rath, Albert H Vette, Shyamsundar Ramasubramaniam, Kun Li, Joel Burdick, Victor Reggie Edgerton, Yury Gerasimenko, Dimitry Sayenko
Electrical neuromodulation of spinal networks improves the control of movement of the paralyzed limbs after spinal cord injury (SCI). However, the potential of non-invasive spinal stimulation to facilitate postural trunk control during sitting in humans with SCI has not been investigated. We hypothesized that transcutaneous electrical stimulation of the lumbosacral enlargement can improve trunk posture. Eight participants with non-progressive SCI, C3-T9, AIS A or C, performed different motor tasks during sitting...
May 22, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29785097/inter-gender-differences-of-balance-indicators-in-persons-60-90-years-of-age
#3
Ewa Puszczalowska-Lizis, Przemyslaw Bujas, Slawomir Jandzis, Jaroslaw Omorczyk, Marek Zak
Introduction: Precision of movements responsible for maintaining balance deteriorates with age due to natural involutionary processes, thus prompting a research question whether the values of gender-related stability indicators might differ significantly among the study subjects over 60 years of age. Methods: The study group comprised 136 seniors (89 women, 47 men; aged 60-90 years). The CQ-Stab 2P 2-platform posturograph was used as the main research device, whereas the Mann-Whitney U -test was used to evaluate the gender-related differences in the average level of variables...
2018: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/29784246/the-effect-of-a-maternity-support-belt-on-static-stability-and-posture-in-pregnant-and-non-pregnant-women
#4
Marie Elena Bey, Adamantios Arampatzis, Kirsten Legerlotz
PURPOSE: Physical and hormonal changes during pregnancy are thought to affect balance and injury risk, with increased numbers of falls being reported. A maternity support belt (MSB) has been suggested to stabilize the pelvis and to enhance balance. The purpose of this study was therefore to investigate the effect of an MSB on postural stability in different trimesters of pregnancy. METHODS: Postural stability was assessed in the first (T1, n = 30), second (T2, n = 30) and third trimester (T3, n = 30) of pregnancy and compared to non-pregnant controls (n = 30), using a portable force plate...
May 18, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29783068/reliability-of-the-star-excursion-balance-test-and-two-new-similar-protocols-to-measure-trunk-postural-control
#5
Diego López-Plaza, Casto Juan-Recio, David Barbado, Iñaki Ruiz-Pérez, Francisco J Vera-Garcia
BACKGROUND: Although the Star Excursion Balance test (SEBT) has shown a good intra-session reliability the inter-session reliability of this test has not been deeply studied. Furthermore, there is an evident high influence of the lower-limbs in the performance of the SEBT so even if it has been used to measure core stability it is possibly not the most suitable measurement. OBJECTIVE: The aims of this study were: i) to assess the absolute and relative between-session reliability of the SEBT and two novel variations of this test to assess trunk postural control while sitting, i...
May 18, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29781935/balance-training-reduces-postural-sway-and-improves-sport-specific-performance-in-visually-impaired-cross-country-skiers
#6
Alexander Kurz, Benedikt Lauber, Steffen Franke, Christian Leukel
Kurz, A, Lauber, B, Franke, S, and Leukel, C. Balance training reduces postural sway and improves sport-specific performance in visually impaired cross-country skiers. J Strength Cond Res XX(X): 000-000, 2018-Balance training is highly effective in reducing sport injuries and causes improvements in postural stability and rapid force production. So far, the positive effects of balance training have been described for healthy athletes. In the present experiments, we questioned whether athletes with disabilities of the visual system can also benefit from balance training...
May 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29779829/leveling-the-playing-field-evaluation-of-a-portable-instrument-for-quantifying-balance-performance
#7
Sutton B Richmond, Kevin D Dames, Daniel J Goble, Brett W Fling
Balance is a complex, sensorimotor task requiring an individual to maintain the center of gravity within the base of support. Quantifying balance in a reliable and valid manner is essential to evaluating disease progression, aging complications, and injuries in clinical and research settings. Typically, researchers use force plates to track motion of the center of gravity during a variety of tasks. However, limiting factors such as cost, portability, and availability have hindered postural stability evaluation in these settings...
May 17, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29778979/exploring-the-relationship-between-stability-and-variability-of-the-centre-of-mass-and-centre-of-pressure
#8
Roshanth Rajachandrakumar, Jotvarinder Mann, Alison Schinkel-Ivy, Avril Mansfield
BACKGROUND: There are competing perspectives in the literature regarding the role of movement variability in quiet standing and balance control. Some view high variability as indicative of poor balance control and a contributor to increased fall risk, whereas others view variability as beneficial in providing sensory information that aids balance control. RESEARCH QUESTION: This study aimed to help to clarify the role of variability in balance control by testing two competing hypotheses: that increased variability would lead to instability, or that increased variability would improve stability, where stability is defined as the ability to respond to a perturbation...
May 9, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29778898/examining-the-diagnostic-accuracy-of-static-postural-stability-measures-in-differentiating-among-knee-osteoarthritis-patients-with-mild-and-moderate-to-severe-radiographic-signs
#9
Nahid Pirayeh, Mohammad-Jafar Shaterzadeh-Yazdi, Hossein Negahban, Mohammad Mehravar, Neda Mostafaee, Amal Saki-Malehi
BACKGROUND: Clinicians need a reliable and accurate tools that can best identify and classify balance impairments between mild and moderate to severe grades of knee osteoarthritis (OA). RESEARCH QUESTION: This study was designed to investigate the accuracy of postural measurements to discriminate between these two groups of knee OA. METHODS: A total of 130 patients with knee OA based on the Kellgren-Lawrence (KL) grading scale were categorized into 65 patients with mild (a KL grade≤ 2) and 65 patient with moderate to severe (a KL grade≥3) radiographic sign...
May 12, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29777980/trunk-postural-adjustments-medium-term-reliability-and-correlation-with-changes-of-clinical-outcomes-following-an-8-week-lumbar-stabilization-exercise-program
#10
Jean-Alexandre Boucher, Richard Preuss, Sharon M Henry, Marilee Nugent, Christian Larivière
BACKGROUND: Low back pain (LBP) has been previously associated with delayed anticipatory postural adjustments (APAs) determined by trunk muscle activation. Lumbar stabilization exercise programs (LSEP) for patients with LBP may restore the trunk neuromuscular control of the lumbar spine, and normalize APAs. This exploratory study aimed at testing the reliability of EMG and kinematics-based postural adjustment measures over an 8-week interval, assessing their sensitivity to LBP status and treatment and examining their relationship with clinical outcomes...
April 22, 2018: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29777115/a-randomized-controlled-pilot-trial-of-game-based-training-in-individuals-with-spinocerebellar-ataxia-type-3
#11
Ray-Yau Wang, Fang-Yi Huang, Bing-Wen Soong, Shih-Fong Huang, Yea-Ru Yang
Exergames are interactive video games used for exercise and may have therapeutic value in people with degenerative ataxia. The purpose of this study was to investigate potential effects of exergaming training on cerebellar ataxia in people with spinocerebellar ataxia type 3 (SCA3). Nine individuals with SCA3 were recruited and randomized to either exergaming or conventional group for a 4-week training period. The severity of ataxia was measured as the primary outcome by the Scale for the Assessment and Rating of Ataxia (SARA) and by the directional control of the limit of stability test...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29775984/static-postural-stability-in-chronic-ankle-instability-an-ankle-sprain-and-healthy-ankles
#12
Yong Ung Kwon
To identify the single leg balance (SLB) test that discriminates among healthy, coper, and chronic ankle instability (CAI) groups and to determine effects of ankle muscles on the balance error scoring system (BESS) among the three populations. 60 subjects (20 per group) performed the SLB test with eyes open (EO) and eyes closed (EC). Normalized mean amplitude (NMA) of the tibia anterior (TA), fibularis longus (FL), and medial gastrocnemius (MG) muscles and BESS were measured while performing the SLB test. The coper group had a lower error score than the CAI group in the EC...
May 18, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29775954/a-new-methodology-based-on-functional-principal-component-analysis-to-study-postural-stability-post-stroke
#13
M Luz Sánchez-Sánchez, Juan-Manuel Belda-Lois, Silvia Mena-Del Horno, Enrique Viosca-Herrero, Celedonia Igual-Camacho, Beatriz Gisbert-Morant
BACKGROUND: A major goal in stroke rehabilitation is the establishment of more effective physical therapy techniques to recover postural stability. Functional Principal Component Analysis provides greater insight into recovery trends. However, when missing values exist, obtaining functional data presents some difficulties. The purpose of this study was to reveal an alternative technique for obtaining the Functional Principal Components without requiring the conversion to functional data beforehand and to investigate this methodology to determine the effect of specific physical therapy techniques in balance recovery trends in elderly subjects with hemiplegia post-stroke...
May 5, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29773841/ocular-counter-rolling-in-astronauts-after-short-and-long-duration-spaceflight
#14
Millard F Reschke, Scott J Wood, Gilles Clément
Ocular counter-rolling (OCR) is a reflex generated by the activation of the gravity sensors in the inner ear that stabilizes gaze and posture during head tilt. We compared the OCR measures that were obtained in 6 astronauts before, during, and after a spaceflight lasting 4-6 days with the OCR measures obtained from 6 astronauts before and after a spaceflight lasting 4-9 months. OCR in the short-duration fliers was measured using the afterimage method during head tilt at 15°, 30°, and 45°. OCR in the long-duration fliers was measured using video-oculography during whole body tilt at 25°...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29765892/botulinum-toxin-a-injection-in-the-treatment-of-spasticity-in-a-infantile-onset-neurodegeneration-with-brain-iron-accumulation-a-case-report
#15
Hwan Kwon Do, Geun Yeol Jo, Jun Koo Kwon, Woo Jin Kim
Pantothenate kinase-associated neurodegeneration (PKAN) is a neurodegenerative disorder characterized by iron accumulation in the globus pallidus (GP) of the brain (neurodegeneration with brain iron accumulation [NBIA]), which is characterized by dystonia and spasticity resulting in postural difficulties. A 33-month-old boy was admitted with a pronounced gait disturbance. Marked hypertonicity in the patient's both calf muscles was noted, resulting in waddling with repeated slip-falls. NBIA was suspected by high T2 intensity in the GP on brain MRI, then it was confirmed by detecting PANK2 mutation...
April 2018: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/29765190/evaluating-equilibrium-in-anterior-cruciate-ligament-reconstruction
#16
REVIEW
Forough Ferdowsi, Zahra Sadat Rezaeian
[Purpose] The purpose of this review was to summarize available methods and equipment which are administered to evaluate the balance in anterior cruciate ligament reconstruction. [Subjects and Methods] A literature search was performed and reviewed using the narrative approach. This study reviewed English articles concerning balance assessment methods in anterior cruciate ligament reconstruction subjects from 1985 to 2015 using the following key words: Anterior Cruciate Ligament Injury, Anterior Cruciate Ligament Reconstruction, Postural Control, Equilibrium, Balance and Stability...
May 2018: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29758971/effects-of-dancesport-on-walking-balance-and-standing-balance-among-the-elderly
#17
Jeehoon Sohn, Sung-Ha Park, Sukwon Kim
BACKGROUND: Dancesport is a popular activity among older adults who look for fun and fitness in Korea. Studies reported positive sociological and psychological effects of dancesport. But, little studies were performed to evaluate the effects of dancesport on balance performances. OBJECTIVE: The objective of the present study was to evaluate the effects of dancesport for 15 weeks on walking balance and standing balance of older adults. METHODS: Older adults regularly participated in the dancesport program 3 times a week for 15 weeks...
May 4, 2018: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/29758508/the-efficacy-of-elastic-therapeutic-tape-variations-on-measures-of-ankle-function-and-performance
#18
Christopher Michael Brogden, Kelly Marrin, Richard Michael Page, Matt Greig
OBJECTIVES: To investigate the effects of different variations of elastic therapeutic taping (ETT) on tests used to screen for ankle injury risk and function. DESIGN: Randomized crossover. SETTING: Laboratory. PARTICIPANTS: Twelve professional male soccer players completed three experimental trials: No tape (NT), RockTape™ (RT), and Kinesio™ Tape (KT) applied to the ankle complex. OUTCOME MEASURES: Clinical and functional ankle screening tests were used to assess the effects of ETT on measures of joint position sense, postural stability and ground reaction forces...
April 23, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29753876/electromyographic-study-of-hip-muscles-involved-in-total-hip-arthroplasty-surprising-results-using-the-direct-anterior-minimally-invasive-approach
#19
Jules Bernard, Fredson Razanabola, Julien Beldame, Stéphane Van Driessche, Helena Brunel, Thomas Poirier, Jean Matsoukis, Fabien Billuart
BACKGROUND: The functional and clinical benefit of minimally invasive total hip arthroplasty (THA) is well-known, but the literature reports impaired gait and posture parameters as compared to the general population, especially following use of the anterior minimally invasive approach, which has more severe impact on posture than the posterior approach. The reasons for this impairment, however, remain unexplained. We therefore conducted a surface electromyography (sEMG) study of the hip muscles liable to be affected by arthroplasty surgery: gluteus maximus (GMax), gluteus medius (GMed, tensor fasciae latae (TFL), and sartorius (S)...
May 10, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29753125/adaptation-of-kinematic-synergy-and-postural-control-to-mechanical-ankle-constraint-on-an-unsteady-stance-surface
#20
Yi-Ying Tsai, Gwo-Ching Chang, Ing-Shiou Hwang
Joint constraint interferes with the coordinative structure in joint movements used to optimize postural stability. This study aimed to investigate changes in postural synergy when the ankle joints were bilaterally braced during a stabilometer stance. Twenty-four young adults stood on a stabilometer plate while wearing a pair of ankle-foot orthoses, which were either unlocked or locked to restrict ankle motion (the ankle constraint (AC) and non-constraint (NC) conditions). Although ankle constraint did not significantly affect the dynamics of the stabilometer movements, the size and regularity of the first principal component (PC1), which explained more than 80% of the variance of joint movements in the lower limb, were increased...
May 9, 2018: Human Movement Science
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