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gait variability

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https://www.readbyqxmd.com/read/28641172/the-impact-of-speed-and-time-on-gait-dynamics
#1
Kathleen S Thomas, Daniel M Russell, Bonnie L Van Lunen, Sheri R Colberg, Steven Morrison
To determine the effects of speed on gait previous studies have examined young adults walking at different speeds; however, the small number of strides may have influenced the results. The aim of this study was to investigate the immediate and long-term impact of continuous slow walking on the mean, variability and structure of stride-to-stride measures. Fourteen young adults walked at a constant pace on a treadmill at three speeds (preferred walking speed (PWS), 90% and 80% PWS) for 30 min each. Spatiotemporal gait parameters were computed over six successive 5-min intervals...
June 19, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28637128/maximizing-gait-and-balance-behaviors-and-decision-making-processes-of-persons-with-multiple-sclerosis-and-physical-therapists
#2
Elissa Held Bradford, Marcia Finlayson, Andrea White Gorman, Joanne Wagner
PURPOSE: To describe the behavioral decisions used by persons with multiple sclerosis (MS) and physical therapists to maximize gait and balance following outpatient physical therapy. METHODS: A multi-method case series with seven matched pairs (persons with MS-physical therapists). Quota sampling maximized variability among persons with MS (disease steps score range 3-6). Three of the four physical therapists were MS or neurology certified. Persons with MS completed a phone survey, follow-up interview, and standardized questionnaires...
February 7, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28631166/morphology-and-the-gradient-of-a-symmetric-potential-predict-gait-transitions-of-dogs
#3
Simon Wilshin, G Clark Haynes, Jack Porteous, Daniel Koditschek, Shai Revzen, Andrew J Spence
Gaits and gait transitions play a central role in the movement of animals. Symmetry is thought to govern the structure of the nervous system, and constrain the limb motions of quadrupeds. We quantify the symmetry of dog gaits with respect to combinations of bilateral, fore-aft, and spatio-temporal symmetry groups. We tested the ability of symmetries to model motion capture data of dogs walking, trotting and transitioning between those gaits. Fully symmetric models performed comparably to asymmetric with only a [Formula: see text] increase in the residual sum of squares and only one-quarter of the parameters...
June 19, 2017: Biological Cybernetics
https://www.readbyqxmd.com/read/28628549/a-classification-system-to-guide-physical-therapy-management-in-huntington-disease-a-case-series
#4
Nora E Fritz, Monica Busse, Karen Jones, Hanan Khalil, Lori Quinn
BACKGROUND AND PURPOSE: Individuals with Huntington disease (HD), a rare neurological disease, experience impairments in mobility and cognition throughout their disease course. The Medical Research Council framework provides a schema that can be applied to the development and evaluation of complex interventions, such as those provided by physical therapists. Treatment-based classifications, based on expert consensus and available literature, are helpful in guiding physical therapy management across the stages of HD...
July 2017: Journal of Neurologic Physical Therapy: JNPT
https://www.readbyqxmd.com/read/28627859/use-of-dynamic-movement-orthoses-to-improve-gait-stability-and-trunk-control-in-ataxic-patients
#5
Mariano Serrao, Carlo Casali, Alberto Ranavolo, Silvia Mari, Carmela Conte, Giorgia Chini, Luca Leonardi, Gianluca Coppola, Cherubino DI Lorenzo, Mahmoud Harfoush, Luca Padua, Francesco Pierelli
BACKGROUND: Patients with cerebellar ataxia show increased upper body movements, which have an impact on balance and walking. AIM: In this study, we investigated the effect of using dynamic movement orthoses (DMO), designed as elastic suits, on trunk motion and gait parameters. DESIGN: A longitudinal uncontrolled study. SETTING: Rehabilitative outpatient unit. POPULATION: Eleven patients (seven men, four women; mean age of 49...
June 19, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28617842/intra-individual-gait-patterns-across-different-time-scales-as-revealed-by-means-of-a-supervised-learning-model-using-kernel-based-discriminant-regression
#6
Fabian Horst, Alexander Eekhoff, Karl M Newell, Wolfgang I Schöllhorn
OBJECTIVE: Traditionally, gait analysis has been centered on the idea of average behavior and normality. On one hand, clinical diagnoses and therapeutic interventions typically assume that average gait patterns remain constant over time. On the other hand, it is well known that all our movements are accompanied by a certain amount of variability, which does not allow us to make two identical steps. The purpose of this study was to examine changes in the intra-individual gait patterns across different time-scales (i...
2017: PloS One
https://www.readbyqxmd.com/read/28610477/lower-extremity-joint-coupling-variability-during-gait-in-young-adults-with-and-without-chronic-ankle-instability
#7
Thomas Lilley, Christopher C Herb, Joseph Hart, Jay Hertel
Chronic ankle instability (CAI) is a condition resulting from a lateral ankle sprain. Shank-rearfoot joint-coupling variability differences have been found in CAI patients; however, joint-coupling variability (VCV) of the ankle and proximal joints has not been explored. Our purpose was to analyse VCV in adults with and without CAI during gait. Four joint-coupling pairs were analysed: knee sagittal-ankle sagittal, knee sagittal-ankle frontal, hip frontal-ankle sagittal and hip frontal-ankle frontal. Twenty-seven adults participated (CAI:n = 13, Control:n = 14)...
June 13, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28602934/biomechanical-factors-associated-with-pain-and-symptoms-following-anterior-cruciate-ligament-injury-and-reconstruction
#8
Aisia Azus, Hsiang-Ling Teng, Lauren Tufts, Daniel Wu, C Benjamin Ma, Richard B Souza, Xiaojuan Li
BACKGROUND: Few studies have investigated the associations between patient-reported outcome and gait in patients with anterior cruciate ligament (ACL) injury and reconstruction over time. Because there is an association between ACL rupture and the presence of osteoarthritis later in life, a better understanding of these relationships will help to elucidate how patients' gait pattern may affect pain and symptoms, potentially leading to better treatment for or preventing the development of knee OA...
June 8, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28601123/physical-function-and-25-hydroxyvitamin-d-in-dialysis-patients-lessons-learned-from-the-slovenian-diagib-study
#9
Maja Bučar Pajek, Ivan Čuk, Gregor Mlinšek, Joško Osredkar, Jernej Pajek
AIMS: Vitamin D stores in dialysis patients may be associated with their muscle function and physical performance. We analyzed associations of 25-hydroxyvitamin D levels with functional test results in prevalent hemodialysis patients and healthy controls. METHODS: Study sample included 54 dialysis patients and 81 healthy controls who performed a 6-minute walk test, sit-to-stand test, handgrip strength measurement, and self-rated habitual adjusted activity score with Human Activity Profile questionnaire...
June 9, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28596731/gait-is-associated-with-cognitive-flexibility-a-dual-tasking-study-in-healthy-older-people
#10
Markus A Hobert, Sinja I Meyer, Sandra E Hasmann, Florian G Metzger, Ulrike Suenkel, Gerhard W Eschweiler, Daniela Berg, Walter Maetzler
Objectives: To analyze which gait parameters are primarily influenced by cognitive flexibility, and whether such an effect depends on the walking condition used. Design: Cross-sectional analysis. Setting: Tübingen evaluation of Risk factors for Early detection of Neurodegenerative Disorders. Participants: A total of 661 non-demented individuals (49-80 years). Measurements: A gait assessment with four conditions was performed: a 20 m walk at convenient speed (C), at fast speed (F), at fast speed while checking boxes (FB), and while subtracting serial 7s (FS)...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28589334/are-there-differences-in-gait-mechanics-in-patients-with-a-fixed-versus-mobile-bearing-total-ankle-arthroplasty-a-randomized-trial
#11
Robin M Queen, Christopher T Franck, Daniel Schmitt, Samuel B Adams
BACKGROUND: Total ankle arthroplasty (TAA) is an alternative to arthrodesis, but no randomized trial has examined whether a fixed bearing or mobile bearing implant provides improved gait mechanics. QUESTIONS/PURPOSES: We wished to determine if fixed- or mobile-bearing TAA results in a larger improvement in pain scores and gait mechanics from before surgery to 1 year after surgery, and to quantify differences in outcomes using statistical analysis and report the standardized effect sizes for such comparisons...
June 6, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28587601/cavalier-king-charles-spaniels-with-chiari-like-malformation-and-syringomyelia-have-increased-variability-of-spatio-temporal-gait-characteristics
#12
Emil Olsen, Emma Jane Suiter, Thilo Pfau, Imelda M McGonnell, Kaspar Matiasek, Anna Giejda, Holger Andreas Volk
BACKGROUND: Chiari-like malformation in the Cavalier King Charles Spaniel is a herniation of the cerebellum and brainstem into or through the foramen magnum. This condition predisposes to Syringomyelia; fluid filled syrinxes within the spinal cord. The resulting pathology in spinal cord and cerebellum create neuropathic pain and changes in gait. This study aims to quantify the changes in gait for Cavalier King Charles Spaniel with Chiari-like malformation and Syringomyelia. METHODS: We compared Cavalier King Charles Spaniel with Chiari-like malformation with (n = 9) and without (n = 8) Syringomyelia to Border Terriers (n = 8)...
June 6, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28583462/decreased-anticipatory-postural-adjustments-during-gait-initiation-acutely-post-concussion
#13
Thomas A Buckley, Jessie R Oldham, Barry A Munkasy, Kelsey E Evans
OBJECTIVE: The purpose of this study was to investigate anticipatory postural adjustments (APA) during the transitional movement task of gait initiation (GI) in individuals acutely following a concussion. DESIGN: Cohort Study. SETTING: University Research Center. PARTICIPANTS: A population based sample of 84 participants divided into two equal groups of acutely post-concussion (CONC) and healthy student athletes. INTERVENTION: Participants were tested on two occasions - a pre-injury baseline test and then the CONC group was retested acutely post-concussion and the control group again at a similar time...
June 2, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28581815/biomechanical-factors-associated-with-achilles-tendinopathy-and-medial-tibial-stress-syndrome-in-runners
#14
James Becker, Stanley James, Robert Wayner, Louis Osternig, Li-Shan Chou
BACKGROUND: There is disagreement in the literature regarding whether the excessive excursion or velocity of rearfoot eversion is related to the development of 2 common running injuries: Achilles tendinopathy (AT) and medial tibial stress syndrome (MTSS). An alternative hypothesis suggests that the duration of rearfoot eversion may be an important factor. However, the duration of eversion has received relatively little attention in the biomechanics literature. HYPOTHESIS: Runners with AT or MTSS will demonstrate a longer duration of eversion but not greater excursion or velocity of eversion compared with healthy controls...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28577508/change-in-gait-after-high-tibial-osteotomy-a-systematic-review-and-meta-analysis
#15
Seung Hoon Lee, O-Sung Lee, Seow Hui Teo, Yong Seuk Lee
We conducted a meta-analysis to analyze how high tibial osteotomy (HTO) changes gait and focused on the following questions: (1) How does HTO change basic gait variables? (2) How does HTO change the gait variables in the knee joint? Twelve articles were included in the final analysis. A total of 383 knees was evaluated. There were 237 open wedge (OW) and 143 closed wedge (CW) HTOs. There were 4 level II studies and 8 level III studies. All studies included gait analysis and compared pre- and postoperative values...
May 26, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28577440/effects-of-unstable-footwear-on-gait-characteristic-a-systematic-review
#16
REVIEW
Maede Farzadi, Zahra Nemati, Maryam Jalali, Roghaye Sheikhy Doulagh, Mohammd Kamali
BACKGROUND: Over the last three decades, several designs of unstable footwear have been developed in the forms of shoes, sandals and boots. There are marketing claims related to the positive effects of these shoes on the training of lower limb muscles and improving gait. Many studies have been performed on the effects of unstable footwear on muscle activity, balance, posture, energy expenditure, lower extremity disorders, and biomechanical changes. The analysis of the kinetics and kinematics characteristics of gait would provide objective representation of body movement...
June 2017: Foot
https://www.readbyqxmd.com/read/28575126/gait-dynamics-to-optimize-fall-risk-assessment-in-geriatric-patients-admitted-to-an-outpatient-diagnostic-clinic
#17
Lisette H J Kikkert, Maartje H de Groot, Jos P van Campen, Jos H Beijnen, Tibor Hortobágyi, Nicolas Vuillerme, Claudine C J Lamoth
Fall prediction in geriatric patients remains challenging because the increased fall risk involves multiple, interrelated factors caused by natural aging and/or pathology. Therefore, we used a multi-factorial statistical approach to model categories of modifiable fall risk factors among geriatric patients to identify fallers with highest sensitivity and specificity with a focus on gait performance. Patients (n = 61, age = 79; 41% fallers) underwent extensive screening in three categories: (1) patient characteristics (e...
2017: PloS One
https://www.readbyqxmd.com/read/28573757/circuit-class-therapy-for-improving-mobility-after-stroke
#18
REVIEW
Coralie English, Susan L Hillier, Elizabeth A Lynch
BACKGROUND: Circuit class therapy (CCT) offers a supervised group forum for people after stroke to practise tasks, enabling increased practice time without increasing staffing. This is an update of the original review published in 2010. OBJECTIVES: To examine the effectiveness and safety of CCT on mobility in adults with stroke. SEARCH METHODS: We searched the Cochrane Stroke Group Trials Register (last searched January 2017), CENTRAL (the Cochrane Library, Issue 12, 2016), MEDLINE (1950 to January 2017), Embase (1980 to January 2017), CINAHL (1982 to January 2017), and 14 other electronic databases (to January 2017)...
June 2, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28570662/gait-characteristics-under-different-walking-conditions-association-with-the-presence-of-cognitive-impairment-in-community-dwelling-older-people
#19
Anne-Marie De Cock, Erik Fransen, Stany Perkisas, Veronique Verhoeven, Olivier Beauchet, Roy Remmen, Maurits Vandewoude
BACKGROUND: Gait characteristics measured at usual pace may allow profiling in patients with cognitive problems. The influence of age, gender, leg length, modified speed or dual tasking is unclear. METHODS: Cross-sectional analysis was performed on a data registry containing demographic, physical and spatial-temporal gait parameters recorded in five walking conditions with a GAITRite® electronic carpet in community-dwelling older persons with memory complaints...
2017: PloS One
https://www.readbyqxmd.com/read/28554245/a-device-for-testing-the-dynamic-performance-of-in-situ-force-plates
#20
Rebecca H East, Jonathan J Noble, Richard A Arscott, Adam P Shortland
Force plates are often incorporated into motion capture systems for the calculation of joint kinetic variables and other data. This project aimed to create a system that could be used to check the dynamic performance of force plate in situ. The proposed solution involved the design and development of an eccentrically loaded wheel mounted on a weighted frame. The frame was designed to hold a wheel mounted in two orthogonal positions. The wheel was placed on the force plate and spun. A VICON™ motion analysis system captured the positional data of the markers placed around the rim of the wheel which was used to create a simulated force profile, and the force profile was dependent on spin speed...
May 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
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