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postural instability aging

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https://www.readbyqxmd.com/read/28187890/evaluation-of-a-smartphone-based-assessment-system-in-subjects-with-chronic-ankle-instability
#1
Ya-Lan Chiu, Yi-Ju Tsai, Chueh-Ho Lin, You-Ruei Hou, Wen-Hsu Sung
BACKGROUND: Ankle sprain is the most common sports-related injury, and approximately 80% of patients studied suffered recurrent sprains. These repeated ankle injuries could cause chronic ankle instability, a decrease in sports performance, and a decrease in postural control ability. At the present time, smartphones have become very popular and powerful devices, and smartphone applications (apps) that have been shown to have good validity have been designed to measure human body motion...
February 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28182968/measuring-postural-control-during-mini-squat-posture-in-men-with-early-knee-osteoarthritis
#2
M Petrella, K Gramani-Say, P R M S Serrão, G C Lessi, J A Barela, R P Carvalho, S M Mattiello
Studies have suggested a compromised postural control in individuals with knee osteoarthritis (OA) evidenced by larger and faster displacement of center of pressure (COP). However, quantification of postural control in the mini-squat posture performed by patients with early knee OA and its relation to muscle strength and self-reported symptoms have not been investigated. The main aim of this cross-sectional, observational, controlled study was to determine whether postural control in the mini-squat posture differs between individuals with early knee OA and a control group (CG) and verify the relation among knee extensor torque (KET) and self-reported physical function, stiffness and pain...
February 6, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28150045/epidemiology-of-parkinson-s-disease
#3
REVIEW
Ole-Bjørn Tysnes, Anette Storstein
Parkinson's disease (PD) affects 1-2 per 1000 of the population at any time. PD prevalence is increasing with age and PD affects 1% of the population above 60 years. The main neuropathological finding is α-synuclein-containing Lewy bodies and loss of dopaminergic neurons in the substantia nigra, manifesting as reduced facilitation of voluntary movements. With progression of PD, Lewy body pathology spreads to neocortical and cortical regions. PD is regarded as a movement disorder with three cardinal signs: tremor, rigidity and bradykinesia...
February 1, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28130466/antisaccades-in-parkinson-disease-a-new-marker-of-postural-control
#4
Claire Ewenczyk, Salma Mesmoudi, Cécile Gallea, Marie-Laure Welter, Bertrand Gaymard, Adèle Demain, Lydia Yahia Cherif, Bertrand Degos, Habib Benali, Pierre Pouget, Cyril Poupon, Stéphane Lehericy, Sophie Rivaud-Péchoux, Marie Vidailhet
OBJECTIVE: To describe the relation between gaze and posture/gait control in Parkinson disease (PD) and to determine the role of the mesencephalic locomotor region (MLR) and cortex-MLR connection in saccadic behavior because this structure is a major area involved in both gait/postural control and gaze control networks. METHODS: We recruited 30 patients with PD with or without altered postural control and 25 age-matched healthy controls (HCs). We assessed gait, balance, and neuropsychological status and separately recorded gait initiation and eye movements (visually guided saccades and volitional antisaccades)...
January 27, 2017: Neurology
https://www.readbyqxmd.com/read/28125270/response-to-tendon-vibration-questions-the-underlying-rationale-of-proprioceptive-training
#5
Anat Vilnai Lubetzky, Sarah Westcott McCoy, Robert Price, Deborah Kartin
CONTEXT:  Proprioceptive training on compliant surfaces is used to rehabilitate and prevent ankle sprains. The ability to improve proprioceptive function via such training has been questioned. Achilles tendon vibration is used in motor-control research as a form of proprioceptive stimulus. Using measures of postural steadiness with nonlinear measures to elucidate control mechanisms, tendon vibration can be applied to investigate the underlying rationale of proprioceptive training. OBJECTIVE:  To test whether the effect of vibration on young adults' postural control depended on the support surface...
January 26, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28112022/structural-and-physiological-neurovascular-changes-in-idiopathic-parkinson-s-disease-and-its-clinical-phenotypes
#6
Sarah Al-Bachari, Rishma Vidyasagar, Hedley Ca Emsley, Laura M Parkes
Neurovascular changes are likely to interact importantly with the neurodegenerative process in idiopathic Parkinson's disease (IPD). Markers of neurovascular status (NVS) include white matter lesion (WML) burden and arterial spin labelling (ASL) measurements of cerebral blood flow (CBF) and arterial arrival time (AAT). We investigated NVS in IPD, including an analysis of IPD clinical phenotypes, by comparison with two control groups, one with a history of clinical cerebrovascular disease (CVD) (control positive, CP) and one without CVD (control negative, CN)...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28079509/excellent-balance-skills-despite-active-and-inactive-juvenile-idiopathic-arthritis-unexpected-results-of-a-cross-sectional-study
#7
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/28056109/postural-ataxia-in-cerebellar-downbeat-nystagmus-its-relation-to-visual-proprioceptive-and-vestibular-signals-and-cerebellar-atrophy
#8
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/28028979/a-controlled-trial-of-the-efficacy-of-a-training-walking-program-in-patients-recovering-from-abdominal-aortic-aneurysm-surgery
#9
Bartosz R Wnuk, Jacek Durmała, Krzysztof Ziaja, Przemysław Kotyla, Marek Woźniewski, Edward Błaszczak
BACKGROUND: Major surgical procedures as well as general anesthesia contribute to muscle weakness and posture instability and may result in increased postoperative complications and functional disorders resulting from an elective operation. OBJECTIVES: We aim to state the significance of backward walking as a form of interval march training with patients after abdominal aortic aneurysm surgery. MATERIAL AND METHODS: Sixty-five patients were randomly divided into three subgroups and three various models of physiotherapy were applied...
November 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28005052/-perampanel-in-pharmacotherapy-of-focal-epilepsy-the-efficacy-and-tolerability-in-routine-clinical-practice
#10
I A Zhidkova, V A Karlov, P N Vlasov
AIM: To analyze the efficacy and tolerability of the innovative drug perampanel (PER) as add-on treatment of focal epilepsy in patients older than 12 years. MATERIAL AND METHODS: Forty-six patients with focal epilepsy, aged from 12 to 63 years, mean age 31.7 years, were studied. RESULTS AND CONCLUSION: A decrease in the frequency of all types of seizures by >50% was noted in 46,5% of patients. Stopping of all types of seizures was found in 25...
2016: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28000003/long-term-risk-of-falls-in-an-incident-parkinson-s-disease-cohort-the-norwegian-parkwest-study
#11
Ylva Hivand Hiorth, Guido Alves, Jan Petter Larsen, Jörn Schulz, Ole-Bjørn Tysnes, Kenn Freddy Pedersen
The objective of this study is to examine the frequency, development, concomitants, and risk factors of falls in a population-based incident Parkinson's disease (PD) cohort. One hundred eighty-one drug-naïve patients with incident PD and 173 normal controls recruited from the Norwegian ParkWest study were prospectively monitored over 7 years. Information on falls was obtained biannually from patients, and at baseline and after 1, 3, 5, and 7 years of follow-up in control subjects. Generalized estimating equation models for correlated data were applied to investigate concomitant features of falls and risk factors for incident falls during 7 years of follow-up in PD...
December 20, 2016: Journal of Neurology
https://www.readbyqxmd.com/read/27993708/subtypes-evaluation-of-motor-dysfunction-in-parkinson-s-disease-using-neuromelanin-sensitive-magnetic-resonance-imaging
#12
Yuanyuan Xiang, Tao Gong, Junwei Wu, Jifeng Li, Yan Chen, Yongxiang Wang, Shan Li, Lin Cong, Youting Lin, Yuxiang Han, Ling Yin, Guangbin Wang, Yifeng Du
Parkinson's disease (PD) is characterized by the loss of neuromelanin (NM)-containing neurons in the substantia nigra pars compacta (SNc), and it is divided into two motor subtypes: the postural instability gait difficulty (PIGD) and the tremor dominant (TD) subtypes. With NM-sensitive Magnetic Resonance Imaging (NM-MRI), investigators have been able to accurately detect signal attenuation in SNc of PD; however, the difference of NM loss between PIGD and TD subtypes is still unclear. Thus, the aim of this study was to evaluate the differences in NM-MRI between PD motor subtypes...
December 16, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27905365/-gait-disorders-and-postural-instability-in-patients-with-an-essential-tremor
#13
S V Vasichkin, O S Levin
AIM: To study gait disorders and postural instability in patients with essential tremor (ET). MATERIAL AND METHODS: Forty patients with ET, aged from 29 to 82 years, (mean 64.2±13.0) were examined. Tandem walk, tremor, stability and stabilometry were studied. RESULTS AND CONCLUSION: A half of the patients had gait disorders and postural instability. Though these disorders were mild to moderate, they caused significant subjective discomfort and influenced quality of life...
2016: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/27884168/ataxia-telangiectasia-a-review
#14
REVIEW
Cynthia Rothblum-Oviatt, Jennifer Wright, Maureen A Lefton-Greif, Sharon A McGrath-Morrow, Thomas O Crawford, Howard M Lederman
DEFINITION OF THE DISEASE: Ataxia telangiectasia (A-T) is an autosomal recessive disorder primarily characterized by cerebellar degeneration, telangiectasia, immunodeficiency, cancer susceptibility and radiation sensitivity. A-T is often referred to as a genome instability or DNA damage response syndrome. EPIDEMIOLOGY: The world-wide prevalence of A-T is estimated to be between 1 in 40,000 and 1 in 100,000 live births. CLINICAL DESCRIPTION: A-T is a complex disorder with substantial variability in the severity of features between affected individuals, and at different ages...
November 25, 2016: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/27866086/the-role-of-postural-instability-gait-difficulty-and-fear-of-falling-in-predicting-falls-in-non-demented-older-adults
#15
Gilles Allali, Emmeline I Ayers, Roee Holtzer, Joe Verghese
INTRODUCTION: Postural instability/gait difficulty (PIGD) and fear of falling (FoF) frequently co-exist, but their individual predictive values for falls have not been compared in aging. This study aims to determine both independent and combined effect of PIGD and FoF to falls in older adults without dementia. METHODS: PIGD and other extrapyramidal signs were systematically assessed in 449 community-dwelling participants without Parkinson's disease (76.48±6.61 ys; 56...
March 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/27853104/characteristics-of-hand-tremor-and-postural-sway-in-patients-with-fetal-type-minamata-disease
#16
Toyoto Iwata, Shigeru Takaoka, Mineshi Sakamoto, Eri Maeda, Masaaki Nakamura, Xiao-Jie Liu, Katsuyuki Murata
About forty certified patients aged around 50 years old existed as living witnesses to fetal-type Minamata disease (methylmercury poisoning due to in utero exposure) in Minamata, Japan in 2006. Computerized hand tremor and postural sway tests with spectral analysis were conducted for 24 of them and in matched control subjects to examine the pathophysiological feature of neuromotor function. The tremor intensities of the patients with fetal-type Minamata disease were significantly larger than those of the 67 controls at every frequency band for both hands...
2016: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/27834670/resistance-training-with-instability-is-more-effective-than-resistance-training-in-improving-spinal-inhibitory-mechanisms-in-parkinson-s-disease
#17
Carla Silva-Batista, Eugenia Casella Tavares Mattos, Daniel M Corcos, Jessica M Wilson, Charles J Heckman, Hélcio Kanegusuku, Maria Elisa Pimentel Piemonte, Marco Túlio de Mello, Cláudia Forjaz, Hamilton Roschel, Valmor Tricoli, Carlos Ugrinowitsch
: This study assessed 1) the effects of 12 wk of resistance training (RT) and resistance training with instability (RTI) on presynaptic inhibition (PSI) and disynaptic reciprocal inhibition (DRI) of patients with Parkinson's disease (PD); 2) the effectiveness of RT and RTI in moving PSI and DRI values of patients toward values of age-matched healthy controls (HC; Z-score analysis); and 3) associations between PSI and DRI changes and clinical outcomes changes previously published. Thirteen patients in RT group, 13 in RTI group, and 11 in a nonexercising control group completed the trial...
January 1, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27834534/vestibular-balance-microvascular-and-white-matter-neuroimaging-characteristics-of-blast-injuries-and-mild-traumatic-brain-injury-four-case-reports
#18
Ramtilak Gattu, Faith W Akin, Anthony T Cacace, Courtney D Hall, Owen D Murnane, E Mark Haacke
BACKGROUND: Case reports are presented on four Veterans, aged 29-46 years, who complained of chronic dizziness and/or postural instability following blast exposures. Two of the four individuals were diagnosed with mild traumatic brain injury and three of the four were exposed to multiple blasts. Comprehensive vestibular, balance, gait, audiometry and neuroimaging procedures were used to characterize their injuries. CASE REPORT: Vestibular assessment included videonystagmography, rotary chair and cervical and ocular vestibular evoked myogenic potentials...
2016: Brain Injury: [BI]
https://www.readbyqxmd.com/read/27816048/step-initiation-interferes-with-working-memory-in-nondisabled-patients-with-the-earliest-multiple-sclerosis-a-dual-task-study
#19
G Brecl Jakob, T Remšak, S Šega Jazbec, A Horvat Ledinek, U Rot
Balance and cognition are affected by multiple sclerosis (MS). Cognitive-motor interference (CMI) is important for balance impairment in MS, however little is known about CMI at the earliest stages of the disease. Step initiation (SI) with anticipatory postural adjustments (APAs) has been linked to postural instability and falls in subjects with MS, therefore we aimed to assess CMI between SI and the two storage systems of working memory in patients with clinically isolated syndrome (presented as optic neuritis-ON) suggestive of MS...
January 2017: Gait & Posture
https://www.readbyqxmd.com/read/27788247/dependence-of-gait-deviation-on-weight-bearing-asymmetry-and-postural-instability-in-children-with-unilateral-cerebral-palsy
#20
Małgorzata Domagalska-Szopa, Andrzej Szopa, Andrzej Czamara
Postural control deficits have been suggested to be a major component of gait disorders in children with cerebral palsy. The purpose of this study was to investigate the relationship between postural stability and treadmill walking, in children with unilateral cerebral palsy, by defining dependence between the posturographic weight-bearing distribution and center of pressure (CoP) sway during quiet standing with Gillette Gait Index and the 16 distinct gait parameters that composed the Gillette Gait Index. Forty-five children with unilateral cerebral palsy from 7-12 years of age were included in this study...
2016: PloS One
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