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gait variability

Kyoung Jae Kim, Yoav Gimmon, Jennifer Millar, Michael C Schubert
Vestibular dysfunction typically manifests as postural instability and gait irregularities, in part due to inaccuracies in processing spatial afference. In this study, we have instrumented the tandem walking test with multiple inertial sensors to easily and precisely investigate novel variables that can distinguish abnormal postural and gait control in patients with unilateral vestibular hypofunction. Ten healthy adults and five patients with unilateral vestibular hypofunction were assessed with the tandem walking test during eyes open and eyes closed conditions...
February 13, 2019: Sensors
Raphael B O Gomes, Thales R Souza, Bruno D C Paes, Fabrício A Magalhães, Bruna A Gontijo, Sérgio T Fonseca, Juliana M Ocarino, Renan A Resende
BACKGROUND: The demonstration of the relationship between midfoot passive mechanical resistance and foot pronation during gait may guide the development of assessment and intervention methods to modify foot motion during gait and to alter midfoot passive mechanical resistance. RESEARCH QUESTION: Is foot pronation during the stance phase of gait related to the midfoot passive mechanical resistance to inversion? METHODS: The resistance torque and stiffness provided by midfoot soft tissues of 33 participants (21 females and 12 males) with average of 26...
February 10, 2019: Gait & Posture
Akira Iwata, Yuki Sano, Hideyuki Wanaka, Saki Yamamoto, Yuki Yano, Hiroshi Iwata
[Purpose] Improved quadriceps strength is a primary target of rehabilitation early after total knee arthroplasty. However, patients demonstrate varying improvement trends in gait function and quadriceps strength. This study evaluated the relationship between improvements in quadriceps strength and gait function. [Participants and Methods] The study included 49 patients who were scheduled to undergo unilateral total knee arthroplasty. Gait function, bilateral quadriceps strength, and pain were assessed in all patients...
January 2019: Journal of Physical Therapy Science
Wenke Möhring, Natalie Urfer-Maurer, Serge Brand, Edith Holsboer-Trachsler, Peter Weber, Alexander Grob, Sakari Lemola
OBJECTIVES: The present study explored associations between sleep and children's dual-task performance using cognitive-motor dual tasks (eg, walking and talking). Previous research with older adults indicated correlations between higher gait variability and unfavorable sleep continuity variables. Based on this research, as a first objective, we investigated similar correlations in a sample of children. Second, we explored correlations between dual-task performance and dimensions of sleep architecture...
December 19, 2018: Sleep Medicine
Jana Seuthe, Nicholas D'Cruz, Pieter Ginis, Burkhard Weisser, Daniela Berg, Günther Deuschl, Alice Nieuwboer, Christian Schlenstedt
BACKGROUND: Walking on a split-belt treadmill (SBT) can help to modulate an asymmetric gait, particularly for people with neurological conditions, such as Parkinson's disease (PD), where asymmetry plays a role due to the laterality of the disease. RESEARCH QUESTION: This systematic review critically evaluates the literature on SBT in PD. First, different SBT paradigms and methodological approaches were evaluated. Second, the review explored how people with PD adapt their gait to different SBT conditions compared to healthy controls (HC)...
February 7, 2019: Gait & Posture
Carla Caballero, Keith Davids, Ben Heller, Jonathan Wheat, Francisco J Moreno
BACKGROUND: Motor variability has been related to motor control playing a functional role in human adaptive behaviours. However, the direction of the relationship between variability and motor control can be unclear. The specific relations that exist between task constraints and movement (re)organization could explain some of this controversy. RESEARCH QUESTION: This study sought to understand whether manipulation of task constraints result in changes in the magnitude or structure of motor system variability observed in a basic walking task...
February 4, 2019: Gait & Posture
Daniel Kroneberg, Siobhan Ewert, Anne-Christiane Meyer, Andrea A Kühn
OBJECTIVE: Gait disturbances are frequent side effects occurring during chronic thalamic deep brain stimulation (DBS) in patients with essential tremor (ET). Adapting stimulation settings to shorter pulse widths has been shown to reduce side effects of subthalamic DBS. Here, we assess how a reduction of pulse width changes gait performance of affected patients. METHODS: Sensor-based gait assessment was performed to record spatiotemporal gait parameters in 10 healthy subjects (HS) and 7 patients with ET with gait disturbances following thalamic DBS...
February 14, 2019: Journal of Neurology, Neurosurgery, and Psychiatry
Lorenzo Brognara, Pierpaolo Palumbo, Bernd Grimm, Luca Palmerini
: Parkinson's disease (PD) is a progressive neurodegenerative disorder. Gait impairments are common among people with PD. Wearable sensor systems can be used for gait analysis by providing spatio-temporal parameters useful to investigate the progression of gait problems in Parkinson disease. However, various methods and tools with very high variability have been developed. The aim of this study is to review published articles of the last 10 years (from 2008 to 2018) concerning the application of wearable sensors to assess spatio-temporal parameters of gait in patients with PD...
February 5, 2019: Diseases (Basel)
Gergely Nagymáté, Rita M Kiss
A typical optical based gait analysis laboratory uses expensive stereophotogrammetric motion capture systems. The study aims to propose and validate an affordable gait analysis method using augmented reality (AR) markers with a single action camera. Image processing software calculates the position and orientation of the AR markers. Anatomical landmark calibration is applied on the subject to calibrate each of the anatomical points with respect to their corresponding AR markers. This way, anatomical points are tracked through AR markers using homogeneous coordinate transformations, and the further processing of gait analysis is identical with conventional solutions...
2019: PloS One
Danique Vervoort, A Rob den Otter, Tom J W Buurke, Nicolas Vuillerme, Tibor Hortobágyi, Claudine J C Lamoth
Background: Age-related changes in the sensorimotor system and cognition affect gait adaptation, especially when locomotion is combined with a cognitive task. Performing a dual-task can shift the focus of attention and thus require task prioritization, especially in older adults. To gain a better understanding of the age-related changes in the sensorimotor system, we examined how age and dual-tasking affect adaptive gait and task prioritization while walking on a split-belt treadmill. Methods: Young (21.5 ± 1...
2019: Frontiers in Aging Neuroscience
Tanya Onushko, Timothy Boerger, Jacob Van Dehy, Brian D Schmit
Understanding how people modify their stepping to maintain gait stability may provide information on fall risk and help to understand strategies used to reduce loss of balance. The purpose of this study was to identify the stepping strategies healthy young individuals select to maintain balance while walking on a destabilizing surface in various directions. A treadmill mounted on top of a 6 degree-of-freedom motion base was used to generate support surface oscillations in different degrees of freedom and amplitudes...
2019: PloS One
Joel M Garrett, Ryan Gunn, Roger G Eston, John Jakeman, Darren J Burgess, Kevin Norton
INTRODUCTION: With the underlying mechanisms of fatigue shown to be task-specific, gaining an understanding of changes within the running profile due to fatigue may provide a greater task-specific method for monitoring neuromuscular fatigue (NMF) in elite team sport athletes. This review aimed to identify, review and summarise the literature to understand the effects of fatigue on the running profile of elite team sport athletes. EVIDENCE ACQUISITION: MEDLINE, SPORTDiscus, EMBASE and CINAHL were searched...
February 12, 2019: Journal of Sports Medicine and Physical Fitness
Joicemar Tarouco Amaro, João Victor Novaretti, Diego Costa Astur, Elton Luiz Batista Cavalcante, Adilson Góes Rodrigues Junior, Pedro Debieux, Camila Cohen Kaleka, Moisés Cohen
The objective of this study was to determine in vivo knee kinematics and clinical outcomes of patients who underwent fixed- and mobile-bearing total knee arthroplasty (TKA) at 1- and 2-year follow-up. This prospective double-blinded randomized controlled trial was performed from November 2011 to December 2012. A total of 64 patients were randomized to fixed- and mobile-bearing TKA groups (32 patients in each group). All patients were evaluated with the following: three-dimensional in vivo knee kinematics analysis during gait, stepping up and stepping down stair steps, and getting up from and sitting on a chair; and knee range of motion and patient-reported outcome measures (Knee Outcome Survey Activities of Daily Living Scale [KOS-ADLS] and pain visual analog scale [VAS]) at 1- and 2-year follow-up...
February 12, 2019: Journal of Knee Surgery
Rachel L Usala, Stephen J Fernandez, Mihriye Mete, Nawar M Shara, Joseph G Verbalis
Context: Patients with diabetes mellitus are at increased risk for bone fragility fracture secondary to multiple mechanisms. Hyperglycemia can induce true dilutional hyponatremia. Hyponatremia is associated with gait instability, osteoporosis, and increased falls and bone fractures, and studies suggest that compromised bone quality with hyponatremia may be independent of plasma osmolality. We performed a case-control study of patients with diabetes mellitus matched by median glycated hemoglobin (HbA1c) to assess whether hyponatremia was associated with increased risk of osteoporosis and/or fragility fracture...
February 1, 2019: Journal of the Endocrine Society
Siavash Rezazadeh, David Quintero, Nikhil Divekar, Robert D Gregg
Although there has been recent progress in control of multi-joint prosthetic legs for periodic tasks such as walking, volitional control of these systems for non-periodic maneuvers is still an open problem. In this paper, we develop a new controller that is capable of both periodic walking and common volitional leg motions based on a piecewise holonomic phase variable through a finite state machine. The phase variable is constructed by measuring the thigh angle, and the transitions in the finite state machine are formulated through sensing foot contact together with attributes of a nominal reference gait trajectory...
October 2018: Proceedings of the ... IEEE/RSJ International Conference on Intelligent Robots and Systems
M T Jewell, M Cameron, J Spears, S L McKenna, M S Cockram, J Sanchez, G P Keefe
Lameness in dairy cattle is a major issue for the industry due to the effects on the welfare of the animal, the economic impact, and consumer perception. The aim of this study was to determine the prevalence of lameness and explore potential risk factors in the Maritime Provinces of Canada. Cows were scored for lameness and potential risk factors and were assessed in 46 freestall herds and 33 tiestall herds in Nova Scotia, New Brunswick, and Prince Edward Island. In freestall herds, lameness was assessed using the most common method, locomotion scoring...
February 6, 2019: Journal of Dairy Science
Joanna Reeves, Richard Jones, Anmin Liu, Leah Bent, Christopher Nester
The peroneus longus (PL) is a rearfoot evertor, important in frontal plane foot motion. Studying PL function has been limited by previous electromyography (EMG) studies reporting poor between-day reliability. Due to its close proximity to adjacent muscles, EMG measures of PL may be susceptible to crosstalk, thus correct electrode placement is vital. The aim of this study was to use ultrasound to aid placement of small surface EMG electrodes and determine the between-day reliability of PL EMG in healthy participants' walking...
January 30, 2019: Journal of Biomechanics
Janina A Müßig, Torsten Brauner, Inga Kröger, Patrick A Varady, Andreas Brand, Isabella Klöpfer-Krämer, Stefan Simmel, Thomas Horstmann, Peter Augat
Gait variability is often associated with reduced coordination and increased instability during walking. Especially for patients with musculoskeletal conditions, variability in gait might be associated with the level of daily activity. Therefore, this study examines kinematic variability during walking and the association with daily activity in patients with transfemoral amputation. Therefore, 15 transfemoral amputees, using the C-leg prosthesis of Otto Bock, between 18 and 65 years were recruited during their hospital stay...
February 4, 2019: International Journal of Rehabilitation Research. Revue Internationale de Recherches de Réadaptation
Timothy John Faras, Michael David Laporte, Remi Sandoval, Fadi Najjar, Vanessa Ade, Peter Stubbs
Blood flow restriction walking (BFR-W) is becoming more frequently used in aerobic and strength training and it has been proposed that BFR-W can be used in clinical populations. BFR-W may change gait stability yet few studies have assessed gait changes during or following BFR-W. The aim of this study was to assess if spatial-temporal gait parameters change during and following BFR-W. Twenty-four participants completed two walking sessions (>48-hours apart); 1) Unilateral BFR-W applied at the dominant thigh, 2) walking without BFR...
January 2019: Heliyon
Heiko Gaßner, Cecilia Raccagni, Bjoern M Eskofier, Jochen Klucken, Gregor K Wenning
Background: Differentiating idiopathic Parkinson's disease (IPD) from atypical Parkinsonian disorders (APD) is challenging, especially in early disease stages. Postural instability and gait difficulty (PIGD) are substantial motor impairments of IPD and APD. Clinical evidence implies that patients with APD have larger PIGD impairment than IPD patients. Sensor-based gait analysis as instrumented bedside test revealed more gait deficits in APD compared to IPD. However, the diagnostic value of instrumented bedside tests compared to clinical assessments in differentiating APD from IPD patients have not been evaluated so far...
2019: Frontiers in Neurology
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