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postural instability aging

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https://www.readbyqxmd.com/read/28921721/effects-of-the-availability-of-accurate-proprioceptive-information-on-older-adults-postural-sway-and-muscle-co-contraction
#1
Chesney E Craig, Glenn H M Calvert, Michail Doumas
During conditions of increased postural instability, older adults exhibit greater lower-limb muscle co-contraction. This response has been interpreted as a compensatory postural strategy, which may be used to i006Ecrease proprioceptive information from muscle spindles or to stiffen the lower limb as a general response to minimise postural sway. The current study aimed to test these two hypotheses by investigating use of muscle co-contraction during sensory transitions that manipulated proprioceptive input. Surface EMG was recorded from the bilateral tibialis anterior and gastrocnemius medialis muscles, in young (aged 18-30) and older adults (aged 68-80) during blind-folded postural assessment...
September 16, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28893391/the-effects-of-early-stages-of-aging-on-postural-sway-a-multiple-domain-balance-assessment-using-a-force-platform
#2
Adriana M Degani, Charles T Leonard, Alessander Danna-Dos-Santos
Technical advancements in instrumentation and analytical methods have improved the ability of assessing balance control. This study investigated the effects of early stages of aging on postural sway using traditional and contemporary postural indices from different domains. Eleven healthy young adults and fourteen healthy non-faller older adults performed two postural tasks: (a) functional limits of stability and (b) unperturbed bipedal stance for 120s. Postural indices from spatial, temporal, frequency, and structural domains were extracted from the body's center of pressure (COP) signals and its Rambling and Trembling components...
September 5, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28879446/parkinsonian-symptoms-in-normal-pressure-hydrocephalus-a-population-based-study
#3
Karin Molde, Lars Söderström, Katarina Laurell
It may be challenging to differentiate normal pressure hydrocephalus (NPH) from neurodegenerative disorders such as Parkinson's disease. In this population-based study, we wanted to describe the frequency of parkinsonian symptoms among individuals with and without NPH, and whether the motor examination part of the Unified Parkinson's Disease Rating Scale (UPDRS-m) score differs between these groups. Furthermore, we wanted to find out whether there was a relationship between UPDRS-m score, NPH symptoms, and radiological signs of NPH...
September 6, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28875772/atypical-caudal-regression-syndrome-with-agenesis-of-lumbar-spine-and-presence-of-sacrum-case-report-and-literature-review
#4
Edyta Szumera, Barbara Jasiewicz, Tomasz Potaczek
Context Caudal regression syndrome is a rare disorder, not well described in the literature. Findings Authors treated two patients with congenital absence of thoracolumbar vertebrae and lower limbs paraplegia. Patients had hypoplasia of the lower trunk and extremities with motion between upper and lower torso. Imaging showed caudal spine agenesis, but cleft sacrum was present. Due to severe kyphotic deformity and spinal instability, deformity correction and posterior fusion was performed at the age 6 and 8...
September 6, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28856094/alterations-in-striato-thalamo-pallidal-intrinsic-functional-connectivity-as-a-prodrome-of-parkinson-s-disease
#5
Eran Dayan, Nina Browner
Although the diagnosis of Parkinson's disease (PD) remains anchored around the cardinal motor symptoms of bradykinesia, rest tremor, rigidity and postural instability, it is becoming increasingly clear that the clinical phase of the disease is preceded by a long period of neurodegeneration, which is not readily evident in terms of motor dysfunction. The neurobiological mechanisms that underpin this prodromal phase of PD remain poorly understood. Based on converging evidence of basal ganglia (BG) dysfunction in early PD, we set out to establish whether the prodromal phase of the disease is characterized by alterations in functional communication within the input and output structures of the BG...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28811697/role-of-iron-and-copper-in-the-pathogenesis-of-parkinson-s-disease
#6
Mohit Kumar Gangania, Jyoti Batra, Suman Kushwaha, Rachna Agarwal
Parkinson's disease (PD) is an old age disorder of basal ganglia which involves oligomerization of α-synuclein protein and formation of intercellular inclusions known as "Lewy bodies" in substantia nigra and caudate nuclei in brain which is progressive in nature. It is second most prevalent neurodegenerative disorder characterized by tremor at rest, muscle rigidity, slowness of movement (bradykinesia, akinesia), and changes in posture (instability). Both excess and deficiency in levels of transition metals (especially iron, copper) can be detrimental to the central nervous system...
July 2017: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/28767021/the-limits-of-stability-in-patients-with-unilateral-vestibulopathy
#7
Rafael Alvarez-Otero, Nicolas Perez-Fernandez
OBJECTIVE: To characterize the stability limits and region in patients with unilateral vestibulopathy according to the side of the lesion and determine if that imposes any bias. To analyze if the stability limits and region depend on the functional deficit as evaluated in the sensory organization test. METHODS: Forty patients with chronic dizziness and without any vertigo spell for least 6 months prior to testing. In all of them, a unilateral vestibulopathy was diagnosed clinically and at vestibular testing...
October 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28758070/prediction-of-post-stroke-falls-by-quantitative-assessment-of-balance
#8
Hyun Haeng Lee, Se Hee Jung
OBJECTIVE: To evaluate characteristics of the postural instability in patients with stroke and to present a prediction model of post-stroke falls. METHODS: Patients with a first-ever stroke who had been evaluated by the Balance Master (BM) at post-stroke 3 months (±1 month) between August 2011 and December 2015 were enrolled. Parameters for the postural instability, such as the weight bearing asymmetry (WBA) and postural sway velocity (PSV), were obtained. The fall events in daily lives were assessed via structured telephone interview with a fall related questionnaire...
June 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28743580/comparison-of-balance-strategies-in-mountain-climbers-during-real-altitude-exposure-between-1-500m-and-3-200m-effects-of-age-and-expertise
#9
Anne-Violette Bruyneel, Arnaud Humbert, Marc Bertrand
PURPOSE: The aim of this study was to estimate the effect of altitude (1500m vs. 3200m) on balance strategies, and to determine the influence of age (> or <40 years) and expertise (> or <20days of mountain climbing/year) on postural stability at altitude. METHOD: Eighty-nine volunteer mountaineers were tested at 1500m, 3200m immediately after exiting the cable car and at 3200m following the climb and return. Double-leg stance with eyes closed and single-leg stance with eyes open were tested...
July 22, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28716427/influence-of-l-dopa-on-subtle-motor-signs-in-heterozygous-parkin-and-pink1-mutation-carriers
#10
Anne Weissbach, Inke R König, Katja Hückelheim, Peter P Pramstaller, Elisa Werner, Norbert Brüggemann, Vera Tadic, Katja Lohmann, Tobias Bäumer, Alexander Münchau, Meike Kasten, Christine Klein
INTRODUCTION: A latent nigrostriatal deficit and its possible clinical consequences in asymptomatic heterozygous Parkin and PINK1 mutation carriers (AMC) have been a matter of investigation in recent years. Notably, mild Parkinsonian signs in heterozygous mutation carriers can be so subtle that they may be missed if not specifically investigated. METHODS: We studied 15 heterozygous Parkin and PINK1 AMC and 18 age- and sex-matched mutation-negative controls using a standardized video, instructing the probands to perform relevant parts of the UPDRS III to investigate fine motor movements at baseline and after first-time L-Dopa administration...
July 8, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28713084/evalution-of-the-effectiveness-of-multimodal-approach-to-the-management-of-cervical-vertigo
#11
Olexandr A Jaroshevskyi, Oleksandr S Payenok, Anna V Logvinenko
INTRODUCTION: Vertigo is one of the most common complaints among patients consulting neurologists and general practitioners - family medicine. A special form of dizziness is cervical vertigo. However, the presence of chronic vertigo and imbalance in this group of patients makes it possible to include the treatment of vestibular rehabilitation in the program. AIM: Evalution of the effectiveness of multimodal approach to the management of cervical vertigo. MATERIAL AND METHODS: 109 patients aged from 18 to 45 with vertigo together with myofascial pain syndrome of neck and shoulder area were examined...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28712000/predictors-of-weight-loss-in-early-treated-parkinson-s-disease-from-the-net-pd-ls-1-cohort
#12
Anne-Marie Wills, Ruosha Li, Adriana Pérez, Xuehan Ren, James Boyd
Weight loss is a common symptom of Parkinson's disease and is associated with impaired quality of life. Predictors of weight loss have not been studied in large clinical cohorts. We previously observed an association between change in body mass index and change in Unified Parkinson's Disease Rating Scale (UPDRS) motor and total scores. In this study, we performed a secondary analysis of longitudinal data (1-6 years) from 1619 participants in the NINDS Exploratory Trials in PD Long-term Study-1 (NET-PD LS1) to explore predictors of weight loss in a large prospective clinical trial cohort of early treated Parkinson's disease...
August 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28692855/recuperation-of-slow-walking-in-de-novo-parkinson-s-disease-is-more-closely-associated-with-increased-cadence-rather-than-with-expanded-stride-length
#13
Kyum-Yil Kwon, Hye Mi Lee, Sung Hoon Kang, Seon Jong Pyo, Han Jun Kim, Seong-Beom Koh
INTRODUCTION: Gait characteristics in the early stages of Parkinson's disease (PD) have been less investigated so far. Moreover, the levodopa effect on gait in early PD remains to be further elucidated. We prospectively designed the study to examine gait dynamics and effect of dopaminergic treatment in patients with de novo PD. METHODS: Spatiotemporal parameters were measured in healthy controls and drug naïve patients with PD, using computerized analysis with GAITRite system during usual gait...
July 1, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28684307/discriminant-validity-of-spatial-and-temporal-postural-index-in-children-with-neurodevelopmental-disorders
#14
Maria Pia Bucci, Nathalie Goulème, Coline Stordeur, Eric Acquaviva, Isabelle Scheid, Aline Lefebvre, Christophe-Loïc Gerard, Hugo Peyre, Richard Delorme
Autism, learning disabilities and attention deficit/hyperactive disorder are often comorbid disorders. In order to try and find some markers that might be transnosographic, we hypothesized that abnormal postural sway profiles may discriminate children with neurodevelopmental disorders (NDDs) from typically developing children. The aim of our study was thus to compare spatial and temporal measures of the Center of Pressure in three distinct groups of children with NDDs (high functioning autism spectrum disorders, learning disabilities (dyslexia) and attention deficit/hyperactive disorders) and in typically developing children...
July 3, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28677942/effect-of-fibular-repositioning-taping-in-adult-basketball-players-with-chronic-ankle-instability-a-randomized-placebo-controlled-crossover-trial
#15
Yanina Alves, Fernando Ribeiro, Anabela G Silva
BACKGROUND: Chronic ankle instability presents a high incidence and prevalence in basketbal players. It's important to develop strategies to reduce the functional and mechanical limitations resulting from this condition. To compare the effect of Mulligan ́s fibular repositioning taping with a placebo taping immediatly after application and after a running test (Yo-Yo IRT). METHODS: 16 adult basketball players (10 male, 6 female) with chronic ankle instability and mean age 21...
July 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28677937/long-term-outcome-of-surgical-treatment-of-chiari-malformation-without-syringomyelia
#16
Lorenzo Giammattei, Mahmoud Messerer, Roy T Daniel, Nozar Aghakhani, Fabrice Parker
BACKGROUND: Surgical treatment for CM without syringomyelia is still under debate. The aim of this study was to evaluate the long term outcome of surgically treated patients for CM-I without syringomyelia. METHODS: We selected all adult patients who underwent surgery for CM-I without syringomyelia between 1993 and 2010. Only patients with long term follow-up (>5 years) were included. Clinical manifestations, radiologic features, and follow-up data were analyzed...
July 4, 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/28668186/an-active-balance-board-system-with-real-time-control-of-stiffness-and-time-delay-to-assess-mechanisms-of-postural-stability
#17
Denise R Cruise, James R Chagdes, Joshua J Liddy, Shirley Rietdyk, Jeffrey M Haddad, Howard N Zelaznik, Arvind Raman
Increased time-delay in the neuromuscular system caused by neurological disorders, concussions, or advancing age is an important factor contributing to balance loss (Chagdes et al., 2013, 2016a,b). We present the design and fabrication of an active balance board system that allows for a systematic study of stiffness and time-delay induced instabilities in standing posture. Although current commercial balance boards allow for variable stiffness, they do not allow for manipulation of time-delay. Having two controllable parameters can more accurately determine the cause of balance deficiencies, and allows us to induce instabilities even in healthy populations...
June 21, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28660004/management-of-recent-elbow-dislocations-functional-treatment-versus-immobilization-a-prospective-study-about-60-cases
#18
Ndeye Fatou Coulibaly, Niane Mouhamadou Moustapha, Hamadi Hadji Djoumoi, Sarr Lamine, Gueye Alioune Badara, Sane André Daniel
OBJECTIVE: To determine our therapeutic posture trough a comparison of functional treatment results versus immobilization in two different periods. INTRODUCTION: For years, the treatment of recent elbow dislocations consisted of reduction and immobilization during 21 days. Given the frequency of stiffness other methods have been tried out. METHOD: A prospective study was carried out from January 2010 to December 2014. Sixty patients averaging 28...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28655059/association-of-autonomic-dysfunction-with-disease-progression-and-survival-in-parkinson-disease
#19
Eduardo De Pablo-Fernandez, Carmen Tur, Tamas Revesz, Andrew J Lees, Janice L Holton, Thomas T Warner
Importance: Evidence suggests that development of autonomic dysfunction (AutD) may negatively affect disease course and survival in patients with synucleinopathies. However, the few available studies on Parkinson disease (PD) have conflicting results, comprise a small number of patients, have short follow-up periods, and lack pathologic confirmation of the diagnosis. Objective: To examine the association of time of onset of AutD with disease progression and survival in PD...
August 1, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28642694/ehlers-danlos-syndrome-hypermobility-type-impact-of-somatosensory-orthoses-on-postural-control-a-pilot-study
#20
Emma G Dupuy, Pascale Leconte, Elodie Vlamynck, Audrey Sultan, Christophe Chesneau, Pierre Denise, Stéphane Besnard, Boris Bienvenu, Leslie M Decker
Elhers-Danlos syndrome (EDS) is the clinical manifestation of connective tissue disorders, and comprises several clinical forms with no specific symptoms and selective medical examinations which result in a delay in diagnosis of about 10 years. The EDS hypermobility type (hEDS) is characterized by generalized joint hypermobility, variable skin hyperextensibility and impaired proprioception. Since somatosensory processing and multisensory integration are crucial for both perception and action, we put forth the hypothesis that somatosensory deficits in hEDS patients may lead, among other clinical symptoms, to misperception of verticality and postural instability...
2017: Frontiers in Human Neuroscience
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