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https://www.readbyqxmd.com/read/28380319/the-coefficient-of-friction-in-parkinson-s-disease-gait
#1
Ana Kleiner, M Galli, M Franceschini, M F De Pandis, F Stocchi, G Albertini, Ricardo Machado Leite de Barros
This study aimed to characterize the coefficient of friction (COF) curves of patients with Parkinson's disease (PD) during barefoot gait and to evaluate the relationships between this variable and functional scales. Twenty-two subjects with PD (ON phase of levodopa) and 22 healthy subjects participated in this study. The participants walked barefoot along a pathway that went over two force plates embedded in the floor of the data collection room. The instantaneous COF was calculated as the ratio between the horizontal and vertical components of the ground reaction forces...
January 2017: Functional Neurology
https://www.readbyqxmd.com/read/28324993/dynamic-knee-muscle-co-contraction-quantified-during-walking
#2
Annachiara Strazza, Alessandro Mengarelli, Valentina Agostini, Marco Knaflitz, Laura Burattini, Sandro Fioretti, Francesco Di Nardo
The purpose of the present study was the quantification of the co-activation patterns of the knee extensor and flexor muscles during walking at self-selected speed and cadence. To this aim, the Statistical Gait Analysis, a recent methodology providing a statistical characterization of gait, was performed on surface EMG signals from Vastus Lateralis (VL) and Medial Hamstrings (MH) in 14 healthy young adult subjects. Muscular co-contraction was assessed as the overlapping period between activation intervals of agonist and antagonist muscles...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28306641/a-kinematic-symmetry-index-of-gait-pattern-between-older-adults-with-and-without-low-back-pain
#3
Paul S Sung, Pamela Danial
STUDY DESIGN: Cross-sectional study. OBJECTIVE: To investigate the symmetry index for limb support patterns in right limb dominant older adults with and without low back pain (LBP). SUMMARY OF BACKGROUND DATA: The effects of bilateral asymmetry on gait performance were reported; however, there is a lack of understanding on kinematic symmetry to assess subjects with LBP. This asymmetry might be related to increased compensatory patterns to the dominant side in subjects with LBP...
March 16, 2017: Spine
https://www.readbyqxmd.com/read/28284567/the-analysis-of-three-dimensional-ground-reaction-forces-during-gait-in-children-with-autism-spectrum-disorders
#4
C Z C Hasan, Rozita Jailani, N Md Tahir, Suryani Ilias
Minimal information is known about the three-dimensional (3D) ground reaction forces (GRF) on the gait patterns of individuals with autism spectrum disorders (ASD). The purpose of this study was to investigate whether the 3D GRF components differ significantly between children with ASD and the peer controls. 15 children with ASD and 25 typically developing (TD) children had participated in the study. Two force plates were used to measure the 3D GRF data during walking. Time-series parameterization techniques were employed to extract 17 discrete features from the 3D GRF waveforms...
March 8, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28268770/evaluation-of-a-variable-resistance-orthotic-knee-joint
#5
Andrew Herbert-Copley, Edward D Lemaire, Natalie Baddour
Knee-ankle-foot orthoses (KAFOs) are full leg braces for individuals with knee extensor weakness, designed to support the person during weight bearing activities by preventing knee flexion. KAFOs typically result in an unnatural gait pattern and are primarily used for level ground walking. A novel variable resistance orthotic knee joint, the Ottawalk-Variable Speed (OWVS), was designed to address these limitations. This paper presents a pilot test to evaluate the OWVS functional performance during walking and stair descent...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28241008/variability-of-spatial-temporal-gait-parameters-and-center-of-pressure-displacements-during-gait-in-elderly-fallers-and-nonfallers-a-6-month-prospective-study
#6
Zdenek Svoboda, Lucia Bizovska, Miroslav Janura, Eliska Kubonova, Katerina Janurova, Nicolas Vuillerme
Considering that most of the falls in elderly population arise during walking, tests derived from walking performance would be desirable for comprehensive fall risk assessment. The analysis of spatial temporal parameters and the center of pressure displacement, which represents the interaction between the human body and the ground, would be beneficial. The aim of this study was to compare spatial temporal gait parameters and their variability and the variability of the center of pressure displacement between elderly fallers and nonfallers during gait at self-selected, defined and fast speeds...
2017: PloS One
https://www.readbyqxmd.com/read/28227316/dynamic-knee-muscle-co-contraction-quantified-during-walking
#7
Annachiara Strazza, Alessandro Mengarelli, Valentina Agostini, Marco Knaflitz, Laura Burattini, Sandro Fioretti, Francesco Di Nardo, Annachiara Strazza, Alessandro Mengarelli, Valentina Agostini, Marco Knaflitz, Laura Burattini, Sandro Fioretti, Francesco Di Nardo, Sandro Fioretti, Francesco Di Nardo, Annachiara Strazza, Valentina Agostini, Marco Knaflitz, Laura Burattini, Alessandro Mengarelli
The purpose of the present study was the quantification of the co-activation patterns of the knee extensor and flexor muscles during walking at self-selected speed and cadence. To this aim, the Statistical Gait Analysis, a recent methodology providing a statistical characterization of gait, was performed on surface EMG signals from Vastus Lateralis (VL) and Medial Hamstrings (MH) in 14 healthy young adult subjects. Muscular co-contraction was assessed as the overlapping period between activation intervals of agonist and antagonist muscles...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226959/evaluation-of-a-variable-resistance-orthotic-knee-joint
#8
Andrew Herbert-Copley, Edward D Lemaire, Natalie Baddour, Andrew Herbert-Copley, Edward D Lemaire, Natalie Baddour, Andrew Herbert-Copley, Natalie Baddour, Edward D Lemaire
Knee-ankle-foot orthoses (KAFOs) are full leg braces for individuals with knee extensor weakness, designed to support the person during weight bearing activities by preventing knee flexion. KAFOs typically result in an unnatural gait pattern and are primarily used for level ground walking. A novel variable resistance orthotic knee joint, the Ottawalk-Variable Speed (OWVS), was designed to address these limitations. This paper presents a pilot test to evaluate the OWVS functional performance during walking and stair descent...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28222529/progressive-motor-deficit-is-mediated-by-the-denervation-of-neuromuscular-junctions-and-axonal-degeneration-in-transgenic-mice-expressing-mutant-p301s-tau-protein
#9
Zhuoran Yin, Femke Valkenburg, Betty E Hornix, Ietje Mantingh-Otter, Xingdong Zhou, Muriel Mari, Fulvio Reggiori, Debby Van Dam, Bart J L Eggen, Peter P De Deyn, Erik Boddeke
Tauopathies include a variety of neurodegenerative diseases associated with the pathological aggregation of hyperphosphorylated tau, resulting in progressive cognitive decline and motor impairment. The underlying mechanism for motor deficits related to tauopathy is not yet fully understood. Here, we use a novel transgenic tau mouse line, Tau 58/4, with enhanced neuron-specific expression of P301S mutant tau to investigate the motor abnormalities in association with the peripheral nervous system. Using stationary beam, gait, and rotarod tests, motor deficits were found in Tau 58/4 mice already 3 months after birth, which deteriorated during aging...
February 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28199924/hip-ankle-coordination-during-gait-in-individuals-with-chronic-ankle-instability
#10
Sheng-Che Yen, Kevin K Chui, Marie B Corkery, Elizabeth A Allen, Caitlin M Cloonan
Individuals with chronic ankle instability (CAI) may have sensorimotor impairments that affect control at the hip in addition to the ankle. The purpose of this study was to compare hip-ankle coordination and coordination variability between individuals with CAI and healthy individuals during walking. Ten healthy subjects and 10 subjects with CAI were recruited to walk on a treadmill. Hip-ankle coordination was quantified using vector coding, and coordination variability was quantified using coefficient of correspondence...
March 2017: Gait & Posture
https://www.readbyqxmd.com/read/28167388/unplanned-gait-termination-in-individuals-with-multiple-sclerosis
#11
Kathleen L Roeing, Yaejin Moon, Jacob J Sosnoff
Despite the pervasive nature of gait impairment in multiple sclerosis (MS), there is limited information concerning the control of gait termination in individuals with MS. The purpose of this investigation was to examine unplanned gait termination with and without cognitive distractors in individuals with MS compared to healthy controls. Thirty-one individuals with MS and 14 healthy controls completed a series of unplanned gait termination tasks over a pressure sensitive walkway under distracting and non-distracting conditions...
January 30, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28103470/gender-differences-in-asymmetrical-limb-support-patterns-between-subjects-with-and-without-recurrent-low-back-pain
#12
Paul S Sung, J Tim Zipple, Pamela Danial
New insight regarding limb-dominance effects on temporal-spatial gait parameters is needed to further investigate subjects with recurrent low back pain (LBP). Although an asymmetrical gait pattern was found to reflect natural functional differences, there is a lack of information regarding gender differences on dominant limb support patterns in subjects with LBP. The purpose of this study was to investigate temporal-spatial gait parameters based on limb dominance and gender between subjects with and without LBP...
January 16, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28099115/examination-of-the-reliability-of-an-inertial-sensor-based-gait-analysis-system
#13
Katja Orlowski, Falko Eckardt, Fabian Herold, Norman Aye, Jürgen Edelmann-Nusser, Kerstin Witte
Gait analysis is an important and useful part of the daily therapeutic routine. InvestiGAIT, an inertial sensor-based system, was developed for using in different research projects with a changing number and position of sensors and because commercial systems do not capture the motion of the upper body. The current study is designed to evaluate the reliability of InvestiGAIT consisting of four off-the-shelf inertial sensors and in-house capturing and analysis software. Besides the determination of standard gait parameters, the motion of the upper body (pelvis and spine) can be investigated...
January 18, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28095359/gait-deviations-associated-with-plantar-heel-pain-a-systematic-review
#14
REVIEW
Adam Phillips, Shane McClinton
BACKGROUND: Plantar heel pain is a common foot disorder associated with significant pain and gait-related disability. The aim of this systematic review was to identify gait deviations associated with plantar heel pain. METHODS: A systematic review of articles with quantitative gait variables in individuals with plantar heel pain was conducted using the CINAHL, MEDLINE, Scopus, and Embase databases. Methodological quality was assessed using the modified Downs and Black criteria and used along with the number of studies per gait variable to determine level of evidence...
February 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28095075/a-pilot-study-using-entropy-as-a-non-invasive-assessment-of-running
#15
Andrew M Murray, Joong Hyun Ryu, John Sproule, Anthony P Turner, Phil Graham-Smith, Marco Cardinale
PURPOSE: Running performance is influenced by the interaction of biomechanical and physiological factors. Miniaturised accelerometers worn by the athlete can be used to quantify mechanical aspects of running and be used as a non-invasive tool to assess training status and progression. The aim of this study was to define and validate a method to assess running regularity and allow the estimation of an individual's V̇O2 and/or blood lactate [La]b based on data collected with accelerometers and heart rate (HR)...
January 17, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28064033/altered-gait-mechanics-and-elevated-serum-pro-inflammatory-cytokines-in-asymptomatic-patients-with-mri-evidence-of-knee-cartilage-loss
#16
S N Edd, J Favre, K Blazek, P Omoumi, J L Asay, T P Andriacchi
OBJECTIVE: To test if sagittal plane gait mechanics parameters and serum inflammation levels differ between healthy asymptomatic subjects and asymptomatic subjects with magnetic resonance imaging (MRI) evidence of cartilage loss. DESIGN: Gait mechanics and resting serum tumor necrosis factor-α (TNFα) concentrations were measured for two groups of asymptomatic subjects recruited for a previous study: Pre-Osteoarthritis (OA) subjects had MRI evidence of partial- or full-thickness knee cartilage loss in at least one compartment (n = 52 (30 female), 1...
January 5, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28045571/gait-rehabilitation-for-a-patient-with-an-osseointegrated-prosthesis-following-transfemoral-amputation
#17
Ruud A Leijendekkers, Gerben van Hinte, Maria Wg Nijhuis-van der Sanden, J Bart Staal
BACKGROUND: In patients with a transfemoral amputation socket-related problems are associated with reduced prosthetic use, activity, and quality of life. Furthermore, gait asymmetries are present that may explain secondary complaints. Bone-anchored prostheses (BAPs) may help these patients. Two types of BAP are available, screw and press-fit implants. Rehabilitation following surgery for a press-fit BAP is poorly described. PURPOSE: To describe a rehabilitation program designed to minimize compensation strategies and increase activity using a case-report of an active, 70-year-old man with a traumatic transfemoral amputation who had used a socket prosthesis for 52 years and received a press-fit BAP [Endo-Exo Femoral Prosthesis - EEFP]...
February 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28018193/are-modular-activations-altered-in-lower-limb-muscles-of-persons-with-multiple-sclerosis-during-walking-evidence-from-muscle-synergies-and-biomechanical-analysis
#18
Tiziana Lencioni, Johanna Jonsdottir, Davide Cattaneo, Alessandro Crippa, Elisa Gervasoni, Marco Rovaris, Emilio Bizzi, Maurizio Ferrarin
Background: Persons with Multiple Sclerosis frequently have gait deficits that lead to diminished activities of daily living. Identification of motoneuron activity patterns may elucidate new insight into impaired locomotor coordination and underlying neural systems. The aim of the present study was to investigate muscle synergies, identified by motor modules and their activation profiles, in persons with Multiple Sclerosis (PwMS) during walking compared to those of healthy subjects (HS), as well as, exploring relationship of muscle synergies with walking ability of PwMS...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27980288/a-case-of-central-pontine-and-extrapontine-myelinolysis-after-surgery-for-a-pituitary-tumor
#19
Takanobu Ishiguro, Tomohiko Ishihara, Yuya Hatano, Takahiro Abe, Takayoshi Shimohata, Masatoyo Nishizawa
A 21-year-old woman underwent surgery for a pituitary tumor. On the 11th postoperative day, blood examination revealed severe hyponatremia, with a serum sodium level of 111 mEq/l, and two days later this increased rapidly to 137 mEq/l. On the 20th postoperative day, the patient developed dysarthria and gait disturbance. Head MRI on the 30th postoperative day demonstrated intense high-signal lesions in the pons and bilateral corpus striatum on FLAIR and DWI, and central pontine and extrapontine myelinolysis was diagnosed...
December 16, 2016: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/27918630/changes-in-gait-patterns-induced-by-rhythmic-auditory-stimulation-for-adolescents-with-acquired-brain-injury
#20
Soo Ji Kim, Yoon-Kyum Shin, Ga Eul Yoo, Hyun Ju Chong, Sung-Rae Cho
The effects of rhythmic auditory stimulation (RAS) on gait in adolescents with acquired brain injury (ABI) were investigated. A total of 14 adolescents with ABI were initially recruited, and 12 were included in the final analysis (n = 6 each). They were randomly assigned to the experimental (RAS) or the control (conventional gait training) groups. The experimental group received gait training with RAS three times a week for 4 weeks. For both groups, spatiotemporal parameters and kinematic data, such as dynamic motions of joints on three-dimensional planes during a gait cycle and the range of motion in each joint, were collected...
December 2016: Annals of the New York Academy of Sciences
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