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Postural ET

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
Marie Jaeger, Eve Dupierrix, Céline Piscicelli, Anne Chrispin, Patrice Davoine, Dominic Pérennou
OBJECTIVE: Unilateral spatial neglect (USN) and verticality perception biases are frequently associated after right hemispheric cerebral stroke (Pérennou et al., 2006). These troubles in spatial cognition have also in common to present different clinical types, according to the space considered: personal (PN) and extra-personal neglect (EPN), and biases in the visual (VV) or the postural (PV) vertical. Here, we hypothesized that PN is specially related to a biased PV, and that EPN could be more related to a biased VV...
September 2016: Annals of Physical and Rehabilitation Medicine
Jacques Vaillant, Sophie Pissety, Silvia Martinez, Robert Juvin
OBJECTIVE: If subjects with fibromyalgia syndrome (FMS) firstly describe painful and fatigue syndromes, secondly some of them described latent postural disorders or frailty. If decrease of postural performance has been described on osteoarthritis diseases of lower limb, it is unknown on fibromyalgia. The aim of this study was to assess clinical perform on balance and gait of patients with FMS. MATERIAL/PATIENTS AND METHODS: The sample was selected in-patients or in consultation in the rheumatology department and from those patients participating in a programme of rehabilitation...
September 2016: Annals of Physical and Rehabilitation Medicine
Laura Codorniú, Ariana Paulina Carabajal, Diego Pol, David Unwin, Oliver W M Rauhut
Pterosaurs are an extinct group of highly modified flying reptiles that thrived during the Mesozoic. This group has unique and remarkable skeletal adaptations to powered flight, including pneumatic bones and an elongate digit IV supporting a wing-membrane. Two major body plans have traditionally been recognized: the primitive, primarily long-tailed paraphyletic "rhamphorhynchoids" (preferably currently recognized as non-pterodactyloids) and the derived short-tailed pterodactyloids. These two groups differ considerably in their general anatomy and also exhibit a remarkably different neuroanatomy and inferred head posture, which has been linked to different lifestyles and behaviours and improved flying capabilities in these reptiles...
2016: PeerJ
Chris K Lam, Craig D Tokuno, W Richard Staines, Leah R Bent
When an electrical stimulus is applied to perturb the vestibular system, a postural response is generated orthogonal to head orientation. It has previously been shown that there is a convergence of neck proprioceptive and vestibular input within the cerebellum to provide a head-on-body reference frame (Manzoni et al. in Neuroscience 93:1095-1107, 1999). The objective of this experiment was to determine whether the direction of the postural response to a vestibular perturbation is modulated when function of the cerebellar vermis is temporarily depressed...
September 6, 2016: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
Allison Michaud, Eddy Lang
Clinical question Can conversion to sinus rhythm for a supraventricular tachycardia be enhanced by a postural modification to the Valsalva maneuver? Article chosen Appelboam A, Reuben A, Mann C, et al. Postural modification of the standard Valsalva manoeuvre for emergency treatment of supraventricular tachycardias (REVERT): a randomised controlled trial. Lancet 2015;386(10005):1747-53. 1 OBJECTIVE: To determine effectiveness of a postural modification of the Valsalva involving leg elevation and supine positioning...
August 12, 2016: CJEM
Thushara Perera, Shivanthan A C Yohanandan, Wesley Thevathasan, Mary Jones, Richard Peppard, Andrew H Evans, Joy L Tan, Colette M McKay, Hugh J McDermott
Tremor is characterized commonly through subjective clinical rating scales. Accelerometer-based techniques for objective tremor measurement have been developed in the past, yet these measures are usually presented as an unintuitive dimensionless index without measurement units. Here we have developed a tool (TREMBAL) to provide quantifiable and objective measures of tremor severity using electromagnetic motion tracking. We aimed to compare TREMBAL's objective measures with clinical tremor ratings and determine the test-retest reliability of our technique...
September 2016: Physiological Measurement
Alisha N Jamal, Brian M Feldman, Eleanor Pullenayegum
OBJECTIVE: Chronic neck pain is a common problem with a profound effect on quality of life. Identifying evidence-based management strategies is fundamental in improving patient outcomes. This study is a reanalysis of the data from Helewa, et al to further characterize the effects of postural exercises and neck support pillows on neck pain. METHODS: A full factorial model was used. All interactions were analyzed adjusting for the Northwick Park Neck Pain Questionnaire (NPQ) at baseline...
October 2016: Journal of Rheumatology
Adolfo Ramirez-Zamora, Hans Boggs, Julie G Pilitsis
Essential tremor (ET) is a syndrome characterized by the presence of symmetric, moderate to high frequency postural and action tremors of the limbs. Additionally, increasing evidence indicates the occurrence of associated cerebellar features in ET patients including impaired gait and balance. Deep brain stimulation (DBS) of the ventralis intermedius (VIM) nucleus of the thalamus has been shown to be an effective treatment for medically-refractory ET tremor but its effects on balance remain unclear with conflicting results reported...
August 15, 2016: Journal of the Neurological Sciences
Sarah Morgan, Elan D Louis
BACKGROUND: The re-emergent tremor of Parkinson's disease (PD) is generally recognized as a postural tremor. PHENOMENOLOGY SHOWN: A PD patient with a re-emergent tremor occurring during a task (spiral drawing), which on the surface produced a tremor that resembled that of essential tremor (ET). EDUCATIONAL VALUE: Researchers and clinicians should be aware of features of this re-emergent tremor to help distinguish it from that of ET.
2016: Tremor and Other Hyperkinetic Movements
Vanessa Ponnusamy, Andrew P Owens, Sanjay Purkayastha, Valeria Iodice, Christopher J Mathias
The prevalence and costs of the obesity epidemic and obesity-related conditions, including diabetes mellitus, is consistently increasing worldwide. Bariatric medicine is attempting to address this with weight loss and exercise programmes, and with increasing frequency, various forms of bariatric surgery. There has been considerable success reported after bariatric surgery but not without. We describe 14 patients with orthostatic intolerance (OI) post bariatric surgery. We report on OI (postural dizziness, palpitations and fainting), the results of cardiovascular autonomic testing and the associated and/or causative findings as well as reviewing the literature to consider the possible mechanisms...
July 2016: Autonomic Neuroscience: Basic & Clinical
R Geoffrey Burwell, Emma M Clark, Peter H Dangerfield, Alan Moulton
This paper formulates a novel multifactorial Cascade Concept for the pathogenesis of adolescent idiopathic scoliosis (AIS). This Concept stems from the longitudinal findings of Clark et al. (J Bone Miner Res 29(8):1729-36, 2014) who identified leptin body composition factors at 10 years of age associated with a scoliosis deformity found at 15 years. We interpret these findings in the light of some concepts for AIS pathogenesis. In particular, we speculate that the leptin body composition effect is linked to central nervous system development and the initiation of the asynchronous neuro-osseous growth mechanism that involves the creation of a neuraxis tether of relative anterior vertebral overgrowth...
2016: Scoliosis and Spinal Disorders
M Loring Burgess, Daniel Schmitt, Angel Zeininger, Shannon C McFarlin, Adrienne L Zihlman, John D Polk, Christopher B Ruff
OBJECTIVES: Previous studies suggest that the postures habitually adopted by an animal influence the mechanical loading of its long bones. Relatively extended limb postures in larger animals should preferentially reduce anteroposterior (A-P) relative to mediolateral (M-L) bending of the limb bones and therefore decrease A-P/M-L rigidity. We test this hypothesis by examining growth-related changes in limb bone structure in two primate taxa that differ in ontogenetic patterns of joint posture...
September 2016: American Journal of Physical Anthropology
U Drescher, J Koschate, T Schiffer, U Hoffmann
PURPOSE: The aim of the study was to compare the kinetics responses of heart rate (HR), pulmonary ([Formula: see text]O2pulm), and muscular ([Formula: see text]O2musc) oxygen uptake during dynamic leg exercise across different body positions (-6°, 45°, and 75°). METHODS: Ten healthy individuals [six men, four women; age 23.4 ± 2.8 years; height 179.7 ± 8.3 cm; body mass 73 ± 12 kg (mean ± SD)] completed pseudo-random binary sequence (PRBS) work rate (WR) changes between 30 and 80 W in each posture...
July 2016: European Journal of Applied Physiology
Kai Song, Xiaojing Su, Yonggang Zhang, Chao Liu, Xiangyu Tang, Guoying Zhang, Guoquan Zheng, Geng Cui, Xuesong Zhang, Keya Mao, Zheng Wang, Yan Wang
PURPOSE: Chin-brow vertical angle (CBVA) is very important in correction of thoracolumbar kyphotic deformity in ankylosing spondylitis (AS), especially for the patients with cervical ankylosis. In previous study, Suk et al. stated that the patients with CBVA between -10° and 10° had better horizontal gaze. Unfortunately, in our clinical practice, we found the patients with CBVA between -10° and 10° after surgery usually complained of difficulty in cooking, cleaning, desk working and the like, although they had excellent horizontal gaze...
August 2016: European Spine Journal
Leighton R Barnden, Richard Kwiatek, Benjamin Crouch, Richard Burnet, Peter Del Fante
Autonomic changes are often associated with the chronic fatigue syndrome (CFS), but their pathogenetic role is unclear and brain imaging investigations are lacking. The vasomotor centre and, through it, nuclei in the midbrain and hypothalamus play a key role in autonomic nervous system regulation of steady state blood pressure (BP) and heart rate (HR). In this exploratory cross-sectional study, BP and HR, as indicators of autonomic function, were correlated with volumetric and T1- and T2-weighted spin-echo (T1w and T2w) brain MRI in 25 CFS subjects and 25 normal controls (NC)...
2016: NeuroImage: Clinical
Lamei Yuan, Zhi Song, Xiong Deng, Wen Zheng, Zhijian Yang, Yan Yang, Hao Deng
Essential tremor (ET) is one of the most frequent neurological disorders with elusive etiology, typically characterized by postural and kinetic tremors. Evidence reveals that genetic components are implicated in the development of ET and there are some overlaps between ET and Parkinson's disease in clinical features and etiology. Variants in the fibroblast growth factor 20 gene (FGF20) have been reported to be associated with the risk of Parkinson's disease. To evaluate the association between the FGF20 gene variants and ET susceptibility, we conducted genetic analysis of five FGF20 variants (rs1721100, rs1989754, rs10089600, rs12720208, and rs17550360) in 200 patients with ET and 426 ethnically-matched Chinese Han normal controls...
May 4, 2016: Neuroscience Letters
Ashwini K Rao, Elan D Louis
BACKGROUND: Essential tremor (ET) is a common movement disorder characterized by kinetic, postural and intention tremors. Mounting evidence suggests an underlying dysfunction of the cerebellum or cerebellar system. While few recent studies report impairments in timing control of finger movements in ET, timing control of gait has not been examined to date. We compared timing control of gait in ET patients vs. controls, and further assessed the association of these timing impairments with tremor severity among the ET patients...
2016: Cerebellum & Ataxias
At L Hof, Carolin Curtze
In order to account for the dynamic nature of balance, the concept of the 'extrapolated centre of mass' XcoM has been introduced (Hof et al., 2005). The law for standing balance was then formulated as: the XcoM should remain within the Base of Support (BoS). This law, however, does not take into account that the centre of pressure (CoP) needs time to displace due to various neural and mechanical delays. The theory is extended to include the finite reaction- and displacement time of the CoP. Experimental results on humans standing on two feet undergoing sudden postural perturbations are presented...
February 29, 2016: Journal of Biomechanics
Wenjie Yin, Wei Lin, Wenbo Li, Shusen Qian, Xin Mou
Individuals with essential tremor (ET) have postural and active movement abnormalities. Disturbances in the cerebello-thalamo-cortical circuit may contribute to the several motor symptoms of ET. Resting state fMRI provides a valuable, noninvasive tool to study intrinsic activation in the human brain, particularly in the brains of individuals with neuropsychiatric diseases. To investigate the low frequency oscillation features of intrinsic activation in ET in this study, we performed a resting state fMRI analysis in 24 patients with ET and 23 healthy controls...
May 2016: Brain Topography
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