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https://www.readbyqxmd.com/read/27913354/a-novel-elastic-force-field-to-influence-mediolateral-foot-placement-during-walking
#1
Elizabeth Nyberg, Jordan Broadway, Christian Finetto, Jesse Dean
Bipedal gait can be stabilized through mechanically-appropriate mediolateral foot placement, although this strategy is disrupted in a subset of neurologically injured individuals with balance deficits. The goal of the present work was to develop a device to influence mediolateral foot placement during treadmill walking. We created a novel force-field using a combination of passive elasticity and active control; wires in series with extension springs run parallel to the treadmill belts and can be rapidly repositioned to exert mediolateral forces on the legs of users...
December 1, 2016: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/27908016/bistable-gaits-and-wobbling-induced-by-pedestrian-bridge-interactions
#2
Igor V Belykh, Russell Jeter, Vladimir N Belykh
Several modern footbridges around the world have experienced large lateral vibrations during crowd loading events. The onset of large-amplitude bridge wobbling has generally been attributed to crowd synchrony; although, its role in the initiation of wobbling has been challenged. To study the contribution of a single pedestrian into overall, possibly unsynchronized, crowd dynamics, we use a bio-mechanically inspired inverted pendulum model of human balance and analyze its bi-directional interaction with a lively bridge...
November 2016: Chaos
https://www.readbyqxmd.com/read/27899786/-a-case-of-an-abdominal-desmoplastic-small-round-cell-tumor-with-metastasis-in-the-medulla-oblongata
#3
Ayaka Azami, Yoshinao Takano, Michitaka Honda, Yukitoshi Todate, Takeshi Tada, Mitsuru Waragai, Daizo Fukushima, Nobuyasu Suzuki, Atai Sato, Tsuyoshi Abe, Yasushi Teranishi, Hideo Sakuma
A desmoplastic small round cell tumor(DSRCT)is a very rare malignant tumor that mainly occurs in the intra-abdominal cavity in young adults.This neoplasm has an extremely poor prognosis, with a clinical course characterized by rapid progression and metastasis.We present a 31-year-old man who presented with chief complaints of dysphagia, ataxic gait, and hoarseness.He first underwent surgical resection of a tumor in the medulla oblongata; however, the lesion was suspected to be a metastatic neoplasm.Following a thorough medical examination, the patient was diagnosed with retroperitoneal DSRCT with multiple metastatic lesions...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/27883988/real-time-feedback-to-improve-gait-in-children-with-cerebral-palsy
#4
Linda van Gelder, Adam T C Booth, Ingrid van de Port, Annemieke I Buizer, Jaap Harlaar, Marjolein M van der Krogt
Real-time feedback may be useful for enhancing information gained from clinical gait analysis of children with cerebral palsy (CP). It may also be effective in functional gait training, however, it is not known if children with CP can adapt gait in response to real-time feedback of kinematic parameters. Sixteen children with cerebral palsy (age 6-16; GMFCS I-III), walking with a flexed-knee gait pattern, walked on an instrumented treadmill with virtual reality in three conditions: regular walking without feedback (NF), feedback on hip angle (FH) and feedback on knee angle (FK)...
November 11, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27878442/clinical-and-neurophysiological-risk-factors-for-falls-in-patients-with-bilateral-vestibulopathy
#5
Roman Schniepp, Cornelia Schlick, Fabian Schenkel, Cauchy Pradhan, Klaus Jahn, Thomas Brandt, Max Wuehr
Patients with bilateral vestibular failure (BVF) exhibit imbalance when standing and walking that is linked to a higher fall risk. The purpose of this study was to identify risk factors for falls in BVF. We therefore systematically investigated the interrelationship of clinical and demographic characteristics, gait impairments, and the fall frequency of these patients. Clinical and demographic characteristics as well as quantitative measures of gait performance on a pressure-sensitive gait carpet were collected from 55 patients with different etiologies of BVF...
November 22, 2016: Journal of Neurology
https://www.readbyqxmd.com/read/27878341/initiation-of-forward-gait-with-lateral-occurrence-of-emotional-stimuli-general-findings-and-relevance-for-pedestrians-crossing-roads
#6
D Caffier, C Gillet, L P Heurley, A Bourrelly, F Barbier, J Naveteur
With reference to theoretical models regarding links between emotions and actions, the present study examined whether the lateral occurrence of an emotional stimulus influences spatial and temporal parameters of gait initiation in 18 younger and 18 older healthy adults. In order to simulate road-crossing hazard for pedestrians, slides of approaching cars were used and they were presented in counterbalanced order with threatening slides from the International Affective Picture System (IAPS) and control slides of safe walking areas...
November 22, 2016: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/27876118/flat-shoes-increase-neurogenesis
#7
J Flensmark
The impairment of the horizontal is caused by elevation of the heel of the foot from the ground. Receptors in the soles of the feet provide a mapping of body orientation to the upright, and is identical to Mittelstaedt's idiotropic tendency. Initiation of gait wearing flat shoes without elevation of the heel is sufficient to change to a truthful horizontal. Using flat shoes increases neurogenesis and leads to a decreased frequency of diseases of the nervous system.
December 2016: Medical Hypotheses
https://www.readbyqxmd.com/read/27876002/sporadic-creutzfeldt-jakob-disease-with-unusual-initial-presentation-as-posterior-reversible-encephalopathy-syndrome-a-case-report
#8
Edgaras Dirzius, Renata Balnyte, Vesta Steibliene, Rymante Gleizniene, Inga Gudinaviciene, Andrius Radziunas, Kestutis Petrikonis
BACKGROUND: Creutzfeldt - Jakob disease (CJD) is a rapidly progressive and fatal neurodegenerative prion disease. MRI findings are included in diagnostic criteria for probable CJD, giving a sensitivity and specificity more than 90%, but the atypical radiological presentations in the early stage of the disease could cause the diagnostic difficulties. CJD can be definitively diagnosed by histopathological confirmation, brain biopsy or at autopsy. CASE PRESENTATION: We present a case of 53-year-old woman with a history of a rapidly progressive dementia with symptoms of visual impairment, increased extrapyramidal type muscle tonus, stereotypical movements and ataxic gait resulting in the patient's death after13 months...
November 22, 2016: BMC Neurology
https://www.readbyqxmd.com/read/27872585/the-pedunculopontine-tegmental-nucleus-as-a-motor-and-cognitive-interface-between-the-cerebellum-and-basal-ganglia
#9
REVIEW
Fumika Mori, Ken-Ichi Okada, Taishin Nomura, Yasushi Kobayashi
As an important component of ascending activating systems, brainstem cholinergic neurons in the pedunculopontine tegmental nucleus (PPTg) are involved in the regulation of motor control (locomotion, posture and gaze) and cognitive processes (attention, learning and memory). The PPTg is highly interconnected with several regions of the basal ganglia, and one of its key functions is to regulate and relay activity from the basal ganglia. Together, they have been implicated in the motor control system (such as voluntary movement initiation or inhibition), and modulate aspects of executive function (such as motivation)...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27869535/serum-thyroid-stimulating-hormone-levelsand-frailty-in-the-elderly-the-pro-v-a-study
#10
Nicola Veronese, Sara Watutantrige, Stefania Maggi, Marianna Noale, Brendon Stubbs, Raffaele Antonelli Incalzi, Sabina Zambon, Maria Chiara Corti, Egle Perissinotto, Gaetano Crepaldi, Enzo Manzato, Giuseppe Sergi
High or low thyroid-stimulating hormone (TSH) levels seem to be associated with several negative outcomes in the elderly, but the literature about TSH and frailty is still limited. In this paper, we investigated whether TSH is associated with prevalent and incident frailty in a cohort of older community-dwelling subjects. Among 3,099 initially screened in the Progetto Veneto Anziani Study, 2,571 men and women aged >65 years (for cross-sectional analyses) and 1,732 (longitudinal, mean follow-up period of 4...
November 21, 2016: Rejuvenation Research
https://www.readbyqxmd.com/read/27858517/slip-initiation-in-alternative-and-slip-resistant-footwear
#11
Harish Chander, Chip Wade, John C Garner, Adam C Knight
Slips occur as a result of failure of normal locomotion. The purpose of this study is to analyze the impact of alternative footwear [Crocs™ (CC), flip-flops (FF)] and an industry standard low top slip resistant shoe (SRS)] under multiple gait trials [normal dry (NG); unexpected slip (US), alert slip (AS) and expected slip (ES)] on lower extremity joint kinematics, kinetics and muscle activity. Eighteen healthy male participants [age: 22.28 ± 2.2 years; height: 177.66 ± 6.9 cm; mass: 79.27 ± 7.6 kg] completed the study...
November 18, 2016: International Journal of Occupational Safety and Ergonomics: JOSE
https://www.readbyqxmd.com/read/27855983/comparison-of-base-of-support-size-during-gait-initiation-using-force-plate-and-motion-capture-system-a-bland-and-altman-analysis
#12
E Yiou, C Teyssèdre, R Artico, P Fourcade
This study aimed to estimate the error made by investigators when force-plate data are used to approximate base of support size during gait initiation. Step length and step width obtained with a method based on motion capture system (Kinematics method, considered the "gold standard") and with a method based on the centre of pressure traces obtained from a force-plate (Force-plate method) were purposely compared using descriptive statistics and the Bland and Altman (BA) method. Participants (N=19) performed series of gait initiation in Spontaneous and Maximal Velocity Conditions (SVC and MVC, respectively)...
November 10, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27854095/cerebral-venous-sinus-thrombosis-in-a-patient-with-sj%C3%A3-gren-s-syndrome-with-atypical-antibodies-a-case-report
#13
Tsung-Han Ho, Yu-Wei Hsu, Chih-Wei Wang, Jiunn-Tay Lee, Chi-Hsin Ting, Fu-Chi Yang
BACKGROUND: Although Sjögren's syndrome has been known to complicate with white matter lesions, encephalopathy, or stroke, reports of cerebral venous sinus thrombosis due to Sjögren's syndrome with atypical antibodies are rare. CASE REPORT: A 50-year-old woman was admitted to our neurological ward with nausea and vomiting following acute onset of severe headache in the left occipital region. Brain computed tomography revealed no abnormalities. The patient was fully conscious, with normal cognitive functioning, but exhibited unsteady tandem gait...
June 15, 2016: Acta Neurologica Taiwanica
https://www.readbyqxmd.com/read/27854093/posterior-reversible-encephalopathy-syndrome-mimicking-brainstem-infarction-a-dilemma
#14
Tsung-Han Ho, Chia-Lin Tsai, Yaw-Don Hsu, Jiunn-Tay Lee, Fu-Chi Yang, Chia-Ching Hsu, Chun-Chieh Lin
PURPOSE: We had recently reported one case at American Journal of Emergency Medicine about centralvariant posterior reversible encephalopathy syndrome (PRES) in an 84-year-old woman with an initial misdiagnosis as central pontine myelinolysis (CPM). Here, we introduce another case of centralvariant PRES in a 49-year-old man mimicking as acute brainstem infarction in the cranial computed tomography (CT) findings. CASE REPORT: A 49-year-old man was admitted to the emergency department with a 5-day history of vertigo, cognitive decline, and difficulty in walking...
June 15, 2016: Acta Neurologica Taiwanica
https://www.readbyqxmd.com/read/27853081/unusual-initial-manifestation-of-acquired-hemophilia-a-a-normal-activated-partial-thromboplastin-time-intramuscular-hematoma-and-cerebral-hemorrhage
#15
Nobuaki Tsuyama, Toshihisa Ichiba, Hiroshi Naito
We herein present a case of acquired hemophilia A with a normal activated partial thromboplastin (aPTT), intramuscular hematoma and cerebral hemorrhage occurring in a 73-year-old man. The patient visited our emergency department with gait disturbance, pain and swelling in his right leg. Computed tomography (CT) and magnetic resonance imaging (MRI) revealed intramuscular hematoma and intracranial hemorrhage. The results of initial coagulation studies were normal, but repeated coagulation studies revealed an isolated prolongation of the aPTT...
2016: Internal Medicine
https://www.readbyqxmd.com/read/27848087/the-initial-symptom-and-motor-progression-in-spinocerebellar-ataxias
#16
Lan Luo, Jie Wang, Raymond Y Lo, Karla P Figueroa, Stefan M Pulst, Pei-Hsin Kuo, Susan Perlman, George Wilmot, Christopher M Gomez, Jeremy D Schmahmann, Henry Paulson, Vikram G Shakkottai, Sarah H Ying, Theresa Zesiewicz, Khalaf Bushara, Michael Geschwind, Guangbin Xia, S H Subramony, Tetsuo Ashizawa, Sheng-Han Kuo
The aim of this study is to determine whether the initial symptom associates with motor progression in spinocerebellar ataxias (SCAs). SCAs are clinically heterogeneous and the initial presentation may represent different subtypes of SCA with different motor progression. We studied 317 participants with SCAs1, 2, 3, and 6 from the Clinical Research Consortium for SCAs (CRC-SCA) and repeatedly measured the severity of ataxia for 2 years. SCA patients were divided into gait-onset and non-gait-onset (speech, vision, and hand dexterity) groups based on the initial presentation...
November 15, 2016: Cerebellum
https://www.readbyqxmd.com/read/27846435/muscle-activation-patterns-of-the-lumbo-pelvic-hip-complex-during-walking-gait-before-and-after-exercise
#17
Mihyang Chang, Lindsay V Slater, Revay O Corbett, Joseph M Hart, Jay Hertel
The lumbo-pelvic-hip core complex consists of musculoskeletal structures that stabilize the spine and pelvis, however fatigue may affect muscle recruitment, active muscle stiffness and trunk kinematics, compromising trunk stability. The purpose of this study was to compare trunk muscle activation patterns, and trunk and lower extremity kinematics during walking gait before and after exercise. Surface electrodes were placed over the rectus abdominis, external oblique, erector spinae, gluteus medius, vastus lateralis, and vastus medialis of twenty-five healthy inidviduals...
November 9, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27842560/a-non-invasive-home-based-biomechanical-therapy-for-patients-with-spontaneous-osteonecrosis-of-the-knee
#18
Ehud Atoun, Amit Mor, Ganit Segal, Ronen Debi, Dan Grinberg, Yeshaiau Benedict, Nimrod Rozen, Yiftah Beer, Avi Elbaz
BACKGROUND: The purpose of the current study was to examine the effect of a non-invasive, home-based biomechanical treatment program for patients with spontaneous osteonecrosis of the knee (SONK). METHODS: Seventeen patients with SONK, confirmed by MRI, participated in this retrospective analysis. Patients underwent a spatiotemporal gait analysis and completed the Western Ontario and McMaster University Osteoarthritis Index (WOMAC) and the Short-Form-36 (SF-36)...
November 14, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27836806/hypometric-anticipatory-postural-adjustments-in-dystonia-are-not-affected-by-deep-brain-stimulation-of-globus-pallidus-internus
#19
Gregor Brecl Jakob, Olena Pelykh, Annika Plate, Zuzana Košutzká, Zvezdan Pirtošek, Maja Trošt, Joseph Ilmberger, Peter Valkovic, Jan H Mehrkens, Kai Bötzel
BACKGROUND: Dystonia is a movement disorder with patterned, directional, and often sustained muscle contractions that produce abnormal postures or repetitive movements. Deep brain stimulation (DBS) of the globus pallidus internus (GPi) is an effective and safe treatment for medically refractory dystonia. However, recent studies reported gait problems, gait freezing and falls in patients treated with DBS. Because these symptoms may point to deficient gait initiation processes, we systematically assessed the anticipatory postural adjustments (APAs) prior to stepping in dystonia patients with GPi-DBS...
November 9, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27835673/comparison-of-two-post-stroke-rehabilitation-programs-a-follow-up-study-among-primary-versus-specialized-health-care
#20
Remedios López-Liria, Francisco Antonio Vega-Ramírez, Patricia Rocamora-Pérez, José Manuel Aguilar-Parra, David Padilla-Góngora
OBJECTIVE: To compare home-based rehabilitation (RITH) and standard outpatient rehabilitation in a hospital setting, in terms of improving the functional recovery and quality of life of stroke patients. STUDY DESIGN AND SETTING: This was a prospective cohort study in Andalusia (Spain). PARTICIPANTS: One hundred and forty-five patients completed the outcome data. MEASURES: Daily activities were measured by the Barthel index, Canadian Neurological Scale (to assess mental state), Tinetti scale (balance and gait), and Short Form Health Survey-36 (SF-36 to compare the quality of life)...
2016: PloS One
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