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https://www.readbyqxmd.com/read/28092413/disruption-of-right-posterior-parietal-cortex-by-ctbs-alters-the-control-of-body-balance-in-quiet-stance
#1
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/28090145/total-body-composition-estimated-by-standing-posture-8-electrode-bioelectrical-impedance-analysis-in-male-wrestlers
#2
M-F Cheng, Y-Y Chen, T-R Jang, W-L Lin, J Chen, K-C Hsieh
Standing-posture 8-electrode bioelectrical impedance analysis is a fast and practical method for evaluating body composition in clinical settings, which can be used to estimate percentage body fat (BF%) and skeletal muscle mass in a subject's total body and body segments. In this study, dual-energy X-ray absorptiometry (DXA) was used as a reference method for validating the standing 8-electrode bioelectrical impedance analysis device BC-418 (BIA8, Tanita Corp., Tokyo, Japan). Forty-eight Taiwanese male wrestlers aged from 17...
December 2016: Biology of Sport
https://www.readbyqxmd.com/read/28089390/quantitative-evaluation-of-the-in-vivo-vocal-fold-medial-surface-shape
#3
Andrew M Vahabzadeh-Hagh, Zhaoyan Zhang, Dinesh K Chhetri
OBJECTIVES/HYPOTHESIS: Glottal insufficiency is a common clinical problem in otolaryngology and medialization laryngoplasty (ML) procedures remain the primary treatment modality. Although the goal of ML is to restore physiologic glottal posture and achieve optimal phonation, this posture has not been directly measured. In this study, we assessed glottal medial surface contour changes with selective activation of the intrinsic laryngeal muscles (ILMs). STUDY DESIGN: Basic science study using an in vivo canine hemilarynx model...
January 12, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28089264/development-and-validation-of-the-deep-brain-stimulation-impairment-scale-dbs-is
#4
Franziska Maier, Catharine J Lewis, Carsten Eggers, Andrea A Kühn, Henriette Krug, Jens Volkmann, Anna D Kirsch, Lars Wojtecki, Alfons Schnitzler, Günther Deuschl, Joachim K Krauss, Christiane Woopen, Lars Timmermann
BACKGROUND: Bilateral deep brain stimulation of the subthalamic nucleus (STN-DBS) has considerable influence on motor and non-motor symptoms in Parkinson's disease (PD). While improvements in motor functioning can be easily assessed with general quality of life questionnaires, the measurement of specific STN-DBS-associated impairments often remains insufficient. Hence, we aimed to develop a questionnaire that measures STN-DBS-related impairments. METHODS: The development of the (STN-)DBS Impairment Scale (DBS-IS) consisted of four steps...
January 6, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28079528/assessing-the-evolution-of-redundancy-synergy-of-spontaneous-variability-regulation-with-age
#5
Alberto Porta, Vlasta Bari, Beatrice De Maria, Natália Maria Perseguini, Juliana Milan, Patricia Rehder-Santos, Vinícius Minatel, Anielle Takahashi, Aparecida Catai
We exploited a model-based Wiener-Granger causality method in the information domain for the evaluation of the transfer entropy (TE) and interaction TE (ITE), the latter taken as a measure of the net balance between redundancy and synergy, to describe the interactions between the spontaneous variability of heart period (HP) and systolic arterial pressure (SAP) and the effect of respiration (R) on both variables. Cardiac control was typified via the genuine TE from SAP to HP, that from R to HP, and the ITE from SAP and R to HP, while vascular control was characterized via the genuine TE from HP to SAP, that from R to SAP, and the ITE from HP and R to SAP...
January 12, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28074105/work-related-exposures-and-disorders-among-physical-therapists-experiences-and-beliefs-of-professional-representatives-assessed-using-a-qualitative-approach
#6
Maria Girbig, Alice Freiberg, Stefanie Deckert, Diana Druschke, Christian Kopkow, Albert Nienhaus, Andreas Seidler
BACKGROUND: According to international study results, physical therapists are afflicted with work-related musculoskeletal, psychosocial and dermal disorders as well as infections. The few existing studies in German-speaking regions focus mainly on dermal and psychosocial exposures and resulting complaints. An overview of all relevant work-related exposures and complaints of physical therapists is currently lacking. We sought to identify work-related exposures based on the subjective experiences and beliefs of physiotherapeutic representatives, in order to identify relevant work-related complaints and diseases...
2017: Journal of Occupational Medicine and Toxicology
https://www.readbyqxmd.com/read/28073798/effectiveness-of-a-lumbopelvic-monitor-and-feedback-device-to-change-postural-behaviour-a-protocol-for-the-elf-cluster-randomised-controlled-trial
#7
Daniel Cury Ribeiro, Stephan Milosavljevic, J Haxby Abbott
INTRODUCTION: Low back pain (LBP) is the most common, costly and disabling musculoskeletal disorder worldwide, and is prevalent in healthcare workers. Posture is a modifiable risk factor for LBP shown to reduce the prevalence of LBP. Our feasibility research suggests that postural feedback might help healthcare workers avoid hazardous postures. The Effectiveness of Lumbopelvic Feedback (ELF) trial will investigate the extent to which postural monitor and feedback (PMF) can reduce exposure to hazardous posture associated with LBP...
January 10, 2017: BMJ Open
https://www.readbyqxmd.com/read/28069073/quantification-of-postural-stability-in-minimally-disabled-multiple-sclerosis-patients-by-means-of-dynamic-posturography-an-observational-study
#8
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/28067608/continuous-cognitive-task-promotes-greater-postural-stability-than-an-internal-or-external-focus-of-attention-in-older-adults
#9
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/28063853/reaction-time-and-postural-sway-modify-the-effect-of-executive-function-on-risk-of-falls-in-older-people-with-mild-to-moderate-cognitive-impairment
#10
Morag E Taylor, Stephen R Lord, Kim Delbaere, Susan E Kurrle, A Stefanie Mikolaizak, Jacqueline C T Close
OBJECTIVES: To explore the relationship between cognitive performance and falls in older people with mild to moderate cognitive impairment (CI) by investigating the mediational effects of medical, medication, neuropsychological, and physiological factors. DESIGN: Secondary analysis, prospective cohort study. SETTING: Community and low-level care. PARTICIPANTS: 177 older people (aged 82 ± 7 years) with mild to moderate CI (MMSE 11-23; ACE-R < 83)...
October 25, 2016: American Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28060927/acute-effects-of-three-neuromuscular-warm-up-strategies-on-several-physical-performance-measures-in-football-players
#11
Francisco Ayala, Ana Calderón-López, Juan Carlos Delgado-Gosálbez, Sergio Parra-Sánchez, Carlos Pomares-Noguera, Sergio Hernández-Sánchez, Alejandro López-Valenciano, Mark De Ste Croix
No studies have analysed the acute effects of the FIFA 11+ and Harmoknee warm-up programmes on major physical performance measures. The aim of this study was to analyse the acute (post-exercise) effects of the FIFA 11+, Harmoknee and dynamic warm-up routines on several physical performance measures in amateur football players. A randomized, crossover and counterbalanced study design was used to address the purpose of this study. A total of sixteen amateur football players completed the following protocols in a randomized order on separate days: a) FIFA 11+; b) Harmoknee; and c) dynamic warm-up (DWU)...
2017: PloS One
https://www.readbyqxmd.com/read/28060708/characterization-and-decoding-the-spatial-patterns-of-hand-extension-flexion-using-high-density-ecog
#12
Tianxiao Jiang, Tao Jiang, Taylor Wang, Shanshan Mei, Qingzhu Liu, Yunlin Li, Xiaofei Wang, Sujit Prabhu, Zhiyi Sha, Nuri F Ince
During awake brain surgeries, electrocorticogram (ECoG) was recorded using a high density electrode grid from the motor cortex of two subjects while they were asked to execute spontaneous hand extension and flexion. Firstly, we characterized the spatio-spectral patterns of high-density ECoG during the hand movements. In both subjects, we observed event related desynchronization (ERD) in low frequency band (LFB:8-32Hz) and event related synchronization (ERS) in high frequency band (HFB:60-200Hz) where HFB-ERS was more spatially localized and movement specific compared to LFB-ERD...
January 4, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28060275/automated-analysis-of-c-elegans-swim-behavior-using-celest-software
#13
Carolina Ibáñez-Ventoso, Christopher Herrera, Esteban Chen, Douglas Motto, Monica Driscoll
Dissecting the neuronal and neuromuscular circuits that regulate behavior remains a major challenge in biology. The nematode Caenorhabditis elegans has proven to be an invaluable model organism in helping to tackle this challenge, from inspiring technological approaches, building the human brain connectome, to actually shedding light on the specific molecular drivers of basic functional patterns. The bulk of the behavioral studies in C. elegans have been performed on solid substrates. In liquid, animals exhibit behavioral patterns that include movement at a range of speeds in 3D, as well as partial body movements, such as a posterior curl without anterior shape change, which introduce new challenges for quantitation...
December 7, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28057431/advanced-structural-neuroimaging-in-progressive-supranuclear-palsy-where-do-we-stand
#14
REVIEW
Albert Stezin, Abhishek Lenka, Ketan Jhunjhunwala, Jitender Saini, Pramod K Pal
Progressive supranuclear palsy (PSP) is a progressive neurological disorder characterized by presence of supranuclear gaze palsy, early postural instability, parkinsonism and cognitive impairment. Advanced structural neuroimaging studies have demonstrated variable areas of grey and white matter involvement in PSP. Grey matter (GM) involvement is predominantly reported in the midbrain, subcortical structures such as thalamus and basal ganglia, and cerebellum. Most white matter (WM) tracts are also reported to be damaged in PSP...
December 26, 2016: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28056097/functionality-and-robustness-of-injured-connectomic-dynamics-in-c-elegans-linking-behavioral-deficits-to-neural-circuit-damage
#15
James M Kunert, Pedro D Maia, J Nathan Kutz
Using a model for the dynamics of the full somatic nervous system of the nematode C. elegans, we address how biological network architectures and their functionality are degraded in the presence of focal axonal swellings (FAS) arising from neurodegenerative disease and/or traumatic brain injury. Using biophysically measured FAS distributions and swelling sizes, we are able to simulate the effects of injuries on the neural dynamics of C. elegans, showing how damaging the network degrades its low-dimensional dynamical responses...
January 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28054910/examining-effects-of-physical-exertion-on-the-dynamic-visual-acuity-test-in-collegiate-athletes
#16
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/28050918/unstable-footwear-affects-magnitude-and-structure-of-variability-in-postural-control
#17
Michael Buchecker, Stefan Wegenkittl, Thomas Stöggl, Erich Müller
This study evaluated the amount, and particularly the structure of variability in postural control accompanying an unstable shoe (US) application. Medio-lateral and anterior-posterior center of pressure (COP) signals, plus electromyographic (EMG) profiles of the tibialis anterior and gastrocnemius medialis were recorded in 29 asymptomatic men while wearing both US and flat shoes (FS). Statistical analysis included common measures of dispersion, as well as sample entropy (SEn) and largest Lyapunov exponent (LyE) estimates...
January 4, 2017: Motor Control
https://www.readbyqxmd.com/read/28043936/do-foot-ankle-assessments-assist-the-explanation-of-one-year-knee-arthroplasty-outcomes
#18
L S Gates, C J Bowen, M T Sanchez-Santos, A Delmestri, N K Arden
OBJECTIVE: Whilst a number of risk factors for poor patient reported outcomes (PROMs) following knee arthroplasty (KA) have been identified, unexplained variability still remains. The role of pre-operative foot and ankle status on such outcomes has not been investigated. The aim of this study was therefore to determine the association of clinical foot and ankle assessments with patient reported outcomes one year following KA. DESIGN: One hundred and fifteen participants from the Clinical Outcomes in Arthroplasty Study (COASt), underwent detailed foot and ankle assessments at baseline, prior to KA (2012-2014) and were followed up for self-reported outcomes one year after surgery...
December 30, 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28043054/dynamic-plantar-pressure-distribution-strength-capacity-and-postural-control-after-lisfranc-fracture-dislocation
#19
Alexander T Mehlhorn, Markus Walther, Tayfun Yilmaz, Lennart Gunst, Anja Hirschmüller, Norbert P Südkamp, Hagen Schmal
Substantial progress has been made in the operative treatment of Lisfranc fractures, however, the prognosis remains poor. We hypothesized that Lisfranc injuries change the postural control and muscle strength of the lower limb. Both are suggested to correlate with the clinical outcome and quality of life. 17 consecutive patients suffering from a Lisfranc fracture dislocation were registered, underwent open reduction and internal fixation and were followed-up for 50.5±25.7months (Mean±SDM). Biomechanical analysis of muscle strength capacities, postural control and plantar pressure distribution was assessed >6 month postoperatively...
December 19, 2016: Gait & Posture
https://www.readbyqxmd.com/read/28042448/statistical-analysis-of-the-frequency-distribution-of-signs-and-symptoms-of-patients-with-temporomandibular-disorders
#20
R Franco, M Basili, A Venditti, C Chiaramonte, L Ottria, A Barlattani, P Bollero
The purpose of this text is to evaluate the distribution by sex and age of TMD patients and the frequency of pain on palpation of the lateral pterygoid muscle, pterygoid internal, sternocleidomastoid, masseter, temporal. The purpose is also to assess the existence of direct correlations between the articulating click and lateral deviation, the headache and tenderness of the temporal, the back pain and tenderness of the sternocleidomastoid, the postural disorders and difficulty finding the exact mating closing, the disorders related to previous dental procedures (large conservative reconstructions, rehabilitations fixed dentures and dental extractions) and tenderness to the temporal and masseter...
October 2016: Oral & Implantology
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