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gait variability

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https://www.readbyqxmd.com/read/29148155/identifying-biomechanical-gait-parameters-in-adolescent-boys-with-haemophilia-using-principal-component-analysis
#1
L B Suckling, D Stephensen, M C Cramp, R Mahaffey, W I Drechsler
INTRODUCTION: Improvements in the medical management for those with haemophilia have resulted in improved clinical outcomes. However, current treatment regimens do not alleviate all joint haemarthroses with the potential for long-term joint deterioration remaining. The evaluation of functional activities such as gait, using standardized tools to monitor children with haemophilia is emerging. AIM: This study explored differences in sagittal plane biomechanics of walking in adolescent boys aged 11-18 years with haemophilia and an age-matched group of typically developing boys...
November 17, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/29143300/effect-of-restraining-the-base-of-support-on-the-other-biomechanical-features-in-patients-with-cerebellar-ataxia
#2
C Conte, Mariano Serrao, L Cuius, A Ranavolo, S Conforto, F Pierelli, L Padua
This study aimed to analyze the biomechanical consequences of reducing the base of support in patients with ataxia. Specifically, we evaluated the spatio-temporal parameters, upper- and lower-body kinematics, muscle co-activation, and energy recovery and expenditure. The gaits of 13 patients were recorded using a motion analysis system in unperturbed and perturbed walking conditions. In the latter condition, patients had to walk using the same step width and speed of healthy controls. The perturbed walking condition featured reduced gait speed, step length, hip and knee range of motion, and energy recovery and increased double support duration, gait variability, trunk oscillation, and ankle joint muscle co-activation...
November 15, 2017: Cerebellum
https://www.readbyqxmd.com/read/29141826/effects-of-cognitive-versus-motor-dual-task-on-spatiotemporal-gait-parameters-in-healthy-controls-and-multiple-sclerosis-patients-with-and-without-fall-history
#3
Razieh Mofateh, Reza Salehi, Hossein Negahban, Mohammad Mehravar, Shirin Tajali
BACKGROUND: The purpose of the current study was to compare the effects of cognitive or motor tasks on gait performance between healthy controls and multiple sclerosis (MS) patients with and without fall history. METHODS: The investigation included MS patients with fall history (n = 25) and without fall history (n = 25) and matched healthy controls (n = 25). Participants walked at their preferred speed on a motorized treadmill under three walking conditions in a randomized order: walking only, walking while performing a concurrent cognitive task (counting backward aloud by 3s), and walking while performing a concurrent motor task (carrying a tray with glasses)...
November 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29139079/neuromodulatory-procedures-for-gait-disorders-in-parkinson-s-disease
#4
REVIEW
Patrick Santens
The neurophysiology of gait is complex and involves numerous structures in the central nervous system. Gait disorders occur frequently in Parkinson's disease (PD), and their management may become cumbersome, especially in the more advanced stages. Neuromodulatory treatments, including deep brain stimulation, cortical stimulation and spinal cord stimulation, are reviewed with respect to their effectiveness to improve gait in PD patients. Although positive effects have been reported for all of these procedures, many issues remain in view of methodological heterogeneity, variability in outcome measures and sample size...
November 14, 2017: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/29131657/variability-of-the-dynamic-stiffness-of-foot-joints-effect-of-gait-velocity-variation
#5
Enrique Sanchis, Joaquín Luis Sancho-Bru, Alba Roda-Sales, Javier Pascual Huerta
BACKGROUND: Comparison of dynamic stiffness of foot joints was previously proposed to investigate pathological situations with changes in the properties of muscle and passive structures. Samples must be controlled to reduce the variability within groups being compared, which may arise from different sources, such as gait speed or foot posture index (FPI). METHODS: In this work, variability in the measurement of the dynamic stiffness of ankle, midtarsal and metatarsophalangeal joints was studied in a controlled sample of healthy adult male subjects with normal FPI, and the effect of gait speed was analyzed...
November 13, 2017: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/29130977/effects-of-wearable-sensor-based-balance-and-gait-training-on-balance-gait-and-functional-performance-in-healthy-and-patient-populations-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#6
Katharina Gordt, Thomas Gerhardy, Bijan Najafi, Michael Schwenk
BACKGROUND: Wearable sensors (WS) can accurately measure body motion and provide interactive feedback for supporting motor learning. OBJECTIVE: This review aims to summarize current evidence for the effectiveness of WS training for improving balance, gait and functional performance. METHODS: A systematic literature search was performed in PubMed, Cochrane, Web of Science, and CINAHL. Randomized controlled trials (RCTs) using a WS exercise program were included...
November 1, 2017: Gerontology
https://www.readbyqxmd.com/read/29128742/corrigendum-to-harmony-as-a-convergence-attractor-that-minimizes-the-energy-expenditure-and-variability-in-physiological-gait-and-the-loss-of-harmony-in-cerebellar-ataxia-clin-biomech-48-2017-15-23
#7
Mariano Serrao, Giorgia Chini, Marco Iosa, Carlo Casali, Giovanni Morone, Carmela Conte, Fabiano Bini, Franco Marinozzi, Gianluca Coppola, Francesco Pierelli, Francesco Draicchio, Alberto Ranavolo
No abstract text is available yet for this article.
November 9, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/29128508/relative-and-absolute-test-retest-reliabilities-of-biomechanical-risk-factors-for-knee-osteoarthritis-progression-benchmarks-for-meaningful-change
#8
Nicholas M Brisson, Paul W Stratford, Monica R Maly
OBJECTIVE: Biomechanical factors are important treatment targets in knee osteoarthritis. The knee adduction (KAM) and flexion (KFM) moments, quadriceps strength and power, load frequency, and body mass index (BMI) all have the potential to affect knee articular cartilage integrity by modulating forces across the joint. To identify clinically meaningful change, however, these measurements must be reliable and sensitive to change. This study estimated relative and absolute test-retest reliabilities over long periods of biomechanical risk factors for knee osteoarthritis progression...
November 8, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29126606/balance-study-in-asymptomatic-subjects-determination-of-significant-variables-and-reference-patterns-to-improve-clinical-application
#9
Juan de la Torre, Javier Marin, Jose J Marin, Jose M Auria, Maria B Sanchez-Valverde
Postural control is essential when carrying out everyday activities and its possible disorders have a very significant impact on personal autonomy. To provide the means to accurately measure postural control in the clinical environment, this study checks and discusses the suitability of procedures for a new balance assessment system with a stabilometric platform (MoveHuman-Dyna © UZ-IDERGO), which meets the criteria of clinical stabilometric standardisation established by the International Society for Posture and Gait Research (ISPGR) at the Bologna meeting (2009)...
November 7, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29125920/frontal-plane-knee-mechanics-and-early-cartilage-degeneration-in-people-with-anterior-cruciate-ligament-reconstruction-a-longitudinal-study
#10
Deepak Kumar, Favian Su, Daniel Wu, Valentina Pedoia, Lauren Heitkamp, C Benjamin Ma, Richard B Souza, Xiaojuan Li
BACKGROUND: Abnormal frontal plane gait mechanics are known risk factors for knee osteoarthritis, but their role in early cartilage degeneration after anterior cruciate ligament reconstruction (ACLR) is not well understood. Hypothesis/Purpose: The objective was to evaluate the association of frontal plane gait mechanics with medial knee cartilage magnetic resonance (MR) relaxation times over 1 year in patients with ACLR and controls. It was hypothesized that (1) there will be an increase in frontal plane medial knee loading and medial knee MR relaxation times over time in the patients with ACLR, and (2) increases in frontal plane medial knee loading will be associated with an increase in medial knee MR relaxation times...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29125433/a-points-based-algorithm-for-prognosticating-clinical-outcome-of-chiari-malformation-type-i-with-syringomyelia-results-from-a-predictive-model-analysis-of-82-surgically-managed-adult-patients
#11
Sumit Thakar, Laxminadh Sivaraju, Kuruthukulangara S Jacob, Aditya Atal Arun, Saritha Aryan, Dilip Mohan, Narayanam Anantha Sai Kiran, Alangar S Hegde
OBJECTIVE Although various predictors of postoperative outcome have been previously identified in patients with Chiari malformation Type I (CMI) with syringomyelia, there is no known algorithm for predicting a multifactorial outcome measure in this widely studied disorder. Using one of the largest preoperative variable arrays used so far in CMI research, the authors attempted to generate a formula for predicting postoperative outcome. METHODS Data from the clinical records of 82 symptomatic adult patients with CMI and altered hindbrain CSF flow who were managed with foramen magnum decompression, C-1 laminectomy, and duraplasty over an 8-year period were collected and analyzed...
November 10, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29123499/gait-and-cognition-in-parkinson-s-disease-cognitive-impairment-is-inadequately-reflected-by-gait-performance-during-dual-task
#12
Heiko Gaßner, Franz Marxreiter, Simon Steib, Zacharias Kohl, Johannes C M Schlachetzki, Werner Adler, Bjoern M Eskofier, Klaus Pfeifer, Jürgen Winkler, Jochen Klucken
Introduction: Cognitive and gait deficits are common symptoms in Parkinson's disease (PD). Motor-cognitive dual tasks (DTs) are used to explore the interplay between gait and cognition. However, it is unclear if DT gait performance is indicative for cognitive impairment. Therefore, the aim of this study was to investigate if cognitive deficits are reflected by DT costs of spatiotemporal gait parameters. Methods: Cognitive function, single task (ST) and DT gait performance were investigated in 67 PD patients...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29121964/muscle-force-distribution-of-the-lower-limbs-during-walking-in-diabetic-individuals-with-and-without-polyneuropathy
#13
Aline A Gomes, Marko Ackermann, Jean P Ferreira, Maria Isabel V Orselli, Isabel C N Sacco
BACKGROUND: Muscle force estimation could advance the comprehension of the neuromuscular strategies that diabetic patients adopt to preserve walking ability, which guarantees their independence as they deal with their neural and muscular impairments due to diabetes and neuropathy. In this study, the lower limb's muscle force distribution during gait was estimated and compared in diabetic patients with and without polyneuropathy. METHODS: Thirty individuals were evaluated in a cross-sectional study, equally divided among controls (CG) and diabetic patients with (DNG) and without (DG) polyneuropathy...
November 9, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29121516/comparing-motor-performance-praxis-coordination-and-interpersonal-synchrony-between-children-with-and-without-autism-spectrum-disorder-asd
#14
Maninderjit Kaur, Sudha M Srinivasan, Anjana N Bhat
Children with Autism Spectrum Disorder (ASD) have basic motor impairments in balance, gait, and coordination as well as autism-specific impairments in praxis/motor planning and interpersonal synchrony. Majority of the current literature focuses on isolated motor behaviors or domains. Additionally, the relationship between cognition, symptom severity, and motor performance in ASD is unclear. We used a comprehensive set of measures to compare gross and fine motor, praxis/imitation, motor coordination, and interpersonal synchrony skills across three groups of children between 5 and 12 years of age: children with ASD with high IQ (HASD), children with ASD with low IQ (LASD), and typically developing (TD) children...
November 6, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/29120966/validity-and-reliability-of-accelerometers-in-patients-with-copd-a-systematic-review
#15
Shweta Gore, Jennifer Blackwood, Mary Guyette, Bara Alsalaheen
PURPOSE: Reduced physical activity is associated with poor prognosis in chronic obstructive pulmonary disease (COPD). Accelerometers have greatly improved quantification of physical activity by providing information on step counts, body positions, energy expenditure, and magnitude of force. The purpose of this systematic review was to compare the validity and reliability of accelerometers used in patients with COPD. METHODS: An electronic database search of MEDLINE and CINAHL was performed...
November 8, 2017: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/29118292/-impact-of-frailty-and-metabolic-syndrome-on-the-incidence-of-loss-of-independence-in-community-dwelling-older-japanese-the-kusatsu-town-study
#16
Akihiko Kitamura, Shoji Shinkai, Yu Taniguchi, Hidenori Amano, Satoshi Seino, Yuri Yokoyama, Mariko Nishi, Yoshinori Fujiwara
Objectives To investigate the relationship between frailty, metabolic syndrome (MetS), and loss of independence leading to the onset of disability or death among community-dwelling older Japanese.Methods Between 2002 and 2011, we conducted a 7-year prospective study involving 1,453 residents aged 65 years and over, initially free of disability, who underwent a comprehensive geriatric assessment in Kusatsu town. Statistical analysis was conducted for those with complete values, resulting in a variable number of subjects for each data point...
2017: [Nihon Kōshū Eisei Zasshi] Japanese Journal of Public Health
https://www.readbyqxmd.com/read/29117248/medial-knee-loading-is-altered-in-subjects-with-early-osteoarthritis-during-gait-but-not-during-step-up-and-over-task
#17
Susana Meireles, Mariska Wesseling, Colin R Smith, Darryl G Thelen, Sabine Verschueren, Ilse Jonkers
This study evaluates knee joint loading during gait and step-up-and-over tasks in control subjects, subjects with early knee OA and those with established knee OA. Thirty-seven subjects with varying degrees of medial compartment knee OA severity (eighteen with early OA and sixteen with established OA), and nineteen healthy controls performed gait and step-up-and-over tasks. Knee joint moments, contact forces (KCF), the magnitude of contact pressures and center of pressure (CoP) location were analyzed for the three groups for both activities using a multi-body knee model with articular cartilage contact, 14 ligaments, and six degrees of freedom tibiofemoral and patellofemoral joints...
2017: PloS One
https://www.readbyqxmd.com/read/29116827/frontal-plane-variability-in-foot-orientation-during-fatiguing-running-exercise-in-individuals-with-chronic-ankle-instability
#18
Denise McGrath, Matthew Patterson, Ulrik McCarthy Persson, Brian Caulfield
CONTEXT:   Researchers have reported increased variability in frontal-plane movement at the ankle during jumping in individuals with chronic ankle instability (CAI), which may increase their risk of recurrent ankle sprain. It is not known if this behavior is present during running gait or how fatigue affects the amount of frontal-plane-movement variability in individuals with CAI. OBJECTIVE:   To investigate the amount of roll-angle variability at the foot during a fatiguing exercise protocol in participants with CAI...
November 8, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29114512/the-runsmart-training-program-effect-on-oxygen-consumption-and-lower-extremity-biomechanics-during-running
#19
Jennifer Bogulski, Steven Gonser, Doug Bush, Rachel Bugner, Lindsey Clark, Lisa Farrell, Kristen Swanson, Michael David Ross
As recreational running continues to gain popularity, more individuals are seeking ways to improve running performance. RunSmart is a running intervention program designed to enhance a runner's form. In addition to correcting flaws in a runner's form, RunSmart offers the opportunity for runners to continue a regular regimen while slowly integrating changes in form. The purpose of this case series was twofold: to determine if the RunSmart program coincides with improvements in oxygen consumption (VO2), a variable often associated with better running performance times, and to evaluate the RunSmart program in regard to enhancing gait biomechanics...
August 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29109981/variable-damping-force-tunnel-for-gait-training-using-alex-iii
#20
Paul Stegall, Damiano Zanotto, Sunil K Agrawal
Haptic feedback affects not only the quality of training but can also influence the physical design of robotic gait trainers by determining how much force needs to be applied to the user and the nature of the force. This paper presents the design of a variable damping force tunnel and explores the effect of the shape and strength of the damping field using ALEX III, a treadmill-based exoskeleton developed at Columbia University. The study consists of 32 healthy subjects who were trained for 40 minutes in the device...
July 2017: IEEE Robotics and Automation Letters
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