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Gait Components

Bernard X W Liew, Andrew Morrison, Hiroaki Hobara, Susan Morris, Kevin Netto
Background: The effects of resistance training on a muscle's neural, architectural, and mechanical properties are well established. However, whether resistance training can positively change the coordination of multiple motor elements in the control of a well-defined lower limb motor performance objective remains unclear. Such knowledge is critical given that resistance training is an essential and ubiquitous component in gait rehabilitation. This study aimed to investigate if strength gains of the ankle and knee extensors after resistance training increases kinematic motor abundance in hopping...
2018: PeerJ
Pei-Chun Kao, Shraddha Srivastava
Community dwelling stroke survivors most often fall while walking. Understanding how post-stroke individuals control mediolateral footpath during walking may help elucidate the mechanisms that contribute to walking instability. By applying the Uncontrolled Manifold (UCM) approach, we investigated (1) how post-stroke individuals coordinate lower-extremity joint motions to stabilize mediolateral footpath of the swing leg, and (2) how the inter-joint coordination in footpath stabilization correlates to their walking stability...
2018: PloS One
Chayanin Angthong, Andrea Veljkovic
BACKGROUND: This study aimed to determine the relationships between subjective validated patient-reported outcomes and health-related quality of life, to objective gait characteristics in patients with foot-ankle conditions. Objective gait characteristics were obtained using a wearable foot inertial-sensor device as well as by assessing the relationships between spatiotemporal or gait parameters by analyzing the inter-metric correlations. METHODS: Fifty-two patients with foot-ankle conditions (37 women/15 men, aged 21-75 years) were included in this study...
November 28, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
Madli Bayot, Kathy Dujardin, Céline Tard, Luc Defebvre, Cédrick T Bonnet, Etienne Allart, Arnaud Delval
Studies of dual-tasks (i.e. situations during which an individual performs two tasks simultaneously) and the subsequent inter-task interference have shown that locomotion and posture involves motor and cognitive components. Dual-tasks therefore constitute a promising avenue for improving the diagnosis, prevention and management of falls or cognitive impairment in populations at risk. However, tackling these major public health concerns with dual-task interventions requires a better understanding of the mechanisms underlying dual-task interference...
December 2018: Neurophysiologie Clinique, Clinical Neurophysiology
Yongsoon Park, Jeong-Eun Choi, Hwan-Sik Hwang
Background: Age-related loss of muscle mass and function is a major component of frailty. Nutrition supplementation with exercise is an effective strategy to decrease frailty by preventing sarcopenia, but the effect of protein alone is controversial. Objective: The present study was performed to investigate a dose-dependent effect of protein supplementation on muscle mass and frailty in prefrail or frail malnourished elderly people. Design: A 12-wk double-blind randomized controlled trial was conducted in elderly subjects aged 70-85 y with ≥1 of the Cardiovascular Health Study frailty criteria and a Mini Nutritional Assessment score ≤23...
November 1, 2018: American Journal of Clinical Nutrition
Toshifumi Watanabe, Akino Aoki, Kenji Hoshi, Takeshi Muneta, Ichiro Sekiya, Hideyuki Koga
BACKGROUND: Anterior tibial post impingement during gait and stair ambulation was reported in knees with posterior-stabilized prostheses. However, the link between anterior post impingement and knee kinematics and between anterior post impingement and the clinical outcome has not been well investigated. Therefore, the purpose of this study was to assess the anterior impingement to clarify the relevant kinematics and clinical results including patient-reported outcomes. METHODS: We analyzed 40 well-functioning knees in 20 patients with a posterior-stabilized prosthesis due to osteoarthritis and who were followed up for 2 years or more...
October 31, 2018: Journal of Arthroplasty
Renan A Resende, Larissa S P Pinheiro, Juliana M Ocarino
BACKGROUND: Increased foot pronation may compromise ankle plantarflexion moment during the stance phase of gait, which may overload knee and hip. RESEARCH QUESTION: This study investigated the influence of increased foot pronation on lower limbs angular displacement, internal moments and power in the sagittal plane and ground reaction force and center of pressure displacement during the stance phase of gait. METHODS: Kinematic and kinetic data of 22 participants (10 women and 12 men) were collected while they walked wearing flat (control condition) and laterally wedged sandals to induce foot pronation (inclined condition)...
October 23, 2018: Gait & Posture
Ji Lin, Weiteng Zhang, Yunshi Huang, Weisheng Chen, Ruisen Wu, Xiaodong Chen, Neng Lou, Pengfei Wang
Purpose: Sarcopenia is distinguished by decreased skeletal muscle plus low muscle strength and/or physical performance. This study was designed to demonstrate the relationship between sarcopenia and systemic inflammatory response (neutrophil/lymphocyte ratio [NLR], platelet/lymphocyte ratio [PLR], and large platelet/lymphocyte ratio [LPLR]) prior to radical gastrectomy for gastric cancer. Patients and methods: We conducted a prospective study of gastric cancer patients who underwent radical gastrectomy...
2018: Cancer Management and Research
Åsa von Berens, Roger A Fielding, Thomas Gustafsson, Dylan Kirn, Jonathan Laussen, Margaretha Nydahl, Kieran Reid, Thomas G Travison, Hao Zhu, Tommy Cederholm, Afsaneh Koochek
BACKGROUND: Health-related quality of life (HRQoL) and absence of depressive symptoms are of great importance for older people, which may be achieved through lifestyle interventions, e.g., exercise and nutrition interventions. The aim of this investigation was to analyze the effects of a physical activity program in combination with protein supplementation on HRQoL and depressive symptoms in community-dwelling, mobility-limited older adults. METHODS: In the Vitality, Independence, and Vigor 2 Study (VIVE2), community-dwelling men and women with an average age of 77...
November 21, 2018: BMC Geriatrics
Alison L Pruziner, Emma P Shaw, Jeremy C Rietschel, Brad D Hendershot, Matthew W Miller, Erik J Wolf, Bradley D Hatfield, Christopher L Dearth, Rodolphe J Gentili
Individuals who have sustained loss of a lower limb may require adaptations in sensorimotor and control systems to effectively utilize a prosthesis, and the interaction of these systems during walking is not clearly understood for this patient population. The aim of this study was to concurrently evaluate temporospatial gait mechanics and cortical dynamics in a population with and without unilateral transtibial limb loss (TT). Utilizing motion capture and electroencephalography, these outcomes were simultaneously collected while participants with and without TT completed a concurrent task of varying difficulty (low- and high-demand) while seated and walking...
November 20, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
Madeleine L Burg, Thomas G Clifford, Soroush T Bazargani, Michael Lin-Brande, Gus Miranda, Jie Cai, Anne K Schuckman, Hooman Djaladat, Siamak Daneshmand
PURPOSE: Frailty has been correlated with worse postoperative outcomes. Prospective studies examining frailty and bladder cancer are lacking. We aimed to determine whether a prospective frailty assessment or traditional risk indices can identify patients undergoing radical cystectomy (RC) at risk for complications. MATERIALS AND METHODS: Patients ≥65 years undergoing RC were preoperatively assessed using Fried Frailty Criteria (FFC; grip strength, gait speed, exhaustion, physical activity, shrinking), Charlson Comorbidity Index, American Society of Anesthesiologists score, Katz Index of Independence in Activities of Daily Living, Karnofsky Performance Scale, Eastern Cooperative Oncology Group performance status, and Center for Epidemiological Studies Depression scale...
November 15, 2018: Urologic Oncology
Julia Saifetiarova, Manzoor A Bhat
The cerebellar cortex receives neural information from other brain regions to allow fine motor coordination and motor learning. The primary output neurons from the cerebellum are the Purkinje neurons that transmit inhibitory responses to deep cerebellar nuclei through their myelinated axons. Altered morphological organization and electrical properties of the Purkinje axons lead to detrimental changes in locomotor activity often leading to cerebellar ataxias. Two cytoskeletal scaffolding proteins Band 4.1B (4...
November 17, 2018: Journal of Neuroscience Research
Nikhil Kurian Jacob, Ertan Balaban, Rachel Saunders, John C Batchelor, Stephen G Yeates, Alexander J Casson
Wearable sensors placed behind-the-ear are emerging as being very promising for unobtrusive long term monitoring. Factors such as gait, electroencephalography (EEG), and ballistocardiography (BCG) can all be measured from behind-the-ear in a socially acceptable hearing aid based form factor. Previous works have investigated the recording of electrocardiography (ECG) from the ear, but generally with one electrode placed some distance away from the ear itself. This paper uses recently introduced tattoo electrodes to investigate whether ECG components can indeed be measured from behind a single ear...
July 2018: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Yasunori Aoki, Hiroaki Kazui, Roberto D Pascual-Marqui, Ryouhei Ishii, Kenji Yoshiyama, Hideki Kanemoto, Yukiko Suzuki, Shunsuke Sato, Shingo Azuma, Takashi Suehiro, Takuya Matsumoto, Masahiro Hata, Leonides Canuet, Masao Iwase, Manabu Ikeda
Idiopathic normal pressure hydrocephalus (iNPH) is a neuropsychiatric disease characterized by gait disturbance, cognitive dysfunction, and urinary incontinence that affects a large population of elderly people. These symptoms, especially gait disturbance, can potentially be improved by cerebrospinal fluid (CSF) drainage, which is more effective if performed at an early stage of the disease. However, the neurophysiological mechanisms of these symptoms and their recovery by CSF drainage are poorly understood...
November 11, 2018: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
Adam Trepczynski, Ines Kutzner, Verena Schwachmeyer, Markus O Heller, Tilman Pfitzner, Georg N Duda
BACKGROUND: The onset and progression of osteoarthritis, but also the wear and loosening of the components of an artificial joint, are commonly associated with mechanical overloading of the structures. Knowledge of the mechanical forces acting at the joints, together with an understanding of the key factors that can alter them, are critical to develop effective treatments for restoring joint function. While static anatomy is usually the clinical focus, less is known about the impact of dynamic factors, such as individual muscle recruitment, on joint contact forces...
November 8, 2018: Journal of Neuroengineering and Rehabilitation
Rabiatul Adawiah Abdul Rahman, Fazira Rafi, Fazah Akhtar Hanapiah, Azlina Wati Nikmat, Nor Azira Ismail, Haidzir Manaf
Background: Tasks requiring simultaneous mobility and cognition (dual tasks) have been associated with incidence of falls. Although these deficits have been documented in individuals with neurologic disorder, the effect of dual task in children with traumatic brain injury has not been fully explored. Objective: To investigate the effect of dual-task (dual-motor and dual-cognitive task) conditions on spatiotemporal gait parameters during timed up and go test in children with traumatic brain injury...
2018: Rehabilitation Research and Practice
Kyoung-Tak Kang, Juhyun Son, Sae Kwang Kwon, Oh-Ryong Kwon, Yong-Gon Koh
BACKGROUND: Medial unicompartmental knee arthroplasty (UKA) could be concerned with wear of the cartilage or the wear in the polyethylene (PE) insert. Mechanical alignment determines the biomechanical effect in the long term. However, previous computational studies all found that femoral and tibial components alignment in the UKA were rare, and the results varied. OBJECTIVE: The purpose of this study was to evaluate the biomechanical effect of the femoral and tibial component coronal alignment in varus and valgus conditions through computational simulation...
2018: Bio-medical Materials and Engineering
Élvio R Gouveia, Bruna R Gouveia, Andreas Ihle, Matthias Kliegel, Adilson Marques, Duarte L Freitas
BACKGROUND: Balance and mobility impairments are important modifiable risk factors associated with falls in older people. PURPOSE: To investigate how different functional fitness components relate to balance and mobility, after controlling for age, sex, body mass index (BMI), and different physical activity (PA) domains. METHODS: This representative cross-sectional study included 802 individuals, 401 males and 401 females (69.8 ± 5.6 years) from Madeira, Portugal...
October 28, 2018: Archives of Gerontology and Geriatrics
Irene Koenig, Patric Eichelberger, Angela Blasimann, Antonia Hauswirth, Jean-Pierre Baeyens, Lorenz Radlinger
Surface electromyography is often used to assess muscle activity and muscle function. A wavelet approach provides information about the intensity of muscle activity and motor unit recruitment strategies at every time point of the gait cycle. The aim was to review papers that employed wavelet analyses to investigate electromyograms of lower extremity muscles during walking and running. Eleven databases were searched up until June 1st 2017. The composition was based on the PICO model and the PRISMA checklist...
2018: PloS One
Gi Yong Yoon, Hyuk Jin Oh, Jae Sang Oh, Seok Mann Yoon, Hack Gun Bae
Gliosarcoma (GS), known as variant of glioblastoma multiforme, is aggressive and very rare primary central nervous system malignant neoplasm. They are usually located in the supratentorial area with possible direct dural invasion or only reactive dural thickening. However, in this case, GS was located in lateral side of left posterior cranial fossa. A 78-year-old man was admitted to our hospital with 3 month history of continuous dizziness and gait disturbance without past medical history. A gadolinium-enhanced MRI demonstrated 5...
October 2018: Brain Tumor Research and Treatment
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