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https://www.readbyqxmd.com/read/29158667/different-protocols-for-analyzing-behavior-and-adaptability-in-obstacle-crossing-in-parkinson-s-disease
#1
REVIEW
Nafiseh Mollaei, Estela Bicho, Nuno Sousa, Miguel Fernandes Gago
Imbalance and tripping over obstacles as a result of altered gait in older adults, especially in patients with Parkinson's disease (PD), are one of the most common causes of falls. During obstacle crossing, patients with PD modify their behavior in order to decrease the mechanical demands and enhance dynamic stability. Various descriptions of dynamic traits of gait that have been collected over longer periods, probably better synthesize the underlying structure and pattern of fluctuations in gait and can be more sensitive markers of aging or early neurological dysfunction and increased risk of falls...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/29156379/evaluating-the-immediate-effects-of-wearing-foot-orthotics-in-children-with-joint-hypermobility-syndrome-jhs-by-analysis-of-temperospatial-parameters-of-gait-and-dynamic-balance-a-preliminary-study
#2
P McDermott, E Wolfe, C Lowry, K Robinson, H P French
Joint Hypermobility Syndrome (JHS) in children, presents with increased joint range of motion and can lead to altered gait strategies and reduced dynamic balance. Despite limited evidence foot orthoses are sometimes prescribed to patients with JHS with the aim to improve the stability of their gait pattern and theoretically reduce associated symptoms of fatigue and joint pain. The purpose of this study was therefore to analyse the immediate effects of 'off the shelf' orthoses on temporospatial parameters of gait and dynamic balance in this cohort...
November 15, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29144991/finite-element-simulation-on-posterior-tibial-tendinopathy-load-transfer-alteration-and-implications-to-the-onset-of-pes-planus
#3
Duo Wai-Chi Wong, Yan Wang, Aaron Kam-Lun Leung, Ming Yang, Ming Zhang
BACKGROUND: Posterior tibial tendinopathy is a challenging foot condition resulting in pes planus, which is difficult to diagnose in the early stage. Prior to the deformity, abnormal internal load transfer and soft tissue attenuation are anticipated. The objective of this study was to investigate the internal load transfer and strain of the ligaments with posterior tibial tendinopathy, and the implications to pes planus and other deformities. METHODS: A three-dimensional finite element model of the foot and ankle was reconstructed from magnetic resonance images of a 28-year-old normal female...
November 3, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/29143300/effect-of-restraining-the-base-of-support-on-the-other-biomechanical-features-in-patients-with-cerebellar-ataxia
#4
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/29128629/influence-of-emotional-stimuli-on-lower-limb-cutaneous-reflexes-during-human-gait
#5
Martin Zaback, Brian C Horslen, Taylor W Cleworth, Laurel Collings, Cécile Langlet, J Timothy Inglis, Mark G Carpenter
Previous research has shown that cutaneous reflexes are modulated when walking with a threat to stability. It is unclear if this reflex modulation is purely related to the context of the imposed threat or if emotional changes associated with the threat exert an independent influence on reflex excitability. This study investigated the influence of emotional stimuli on lower limb cutaneous reflexes during treadmill walking. Twenty-eight healthy young adults walked at a self-selected pace while viewing pictures that manipulated emotional arousal and valence (confirmed with electrodermal and self-report measures)...
November 8, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29126606/balance-study-in-asymptomatic-subjects-determination-of-significant-variables-and-reference-patterns-to-improve-clinical-application
#6
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/29114533/effects-of-whole-body-vibration-training-and-mental-training-on-mobility-neuromuscular-performance-and-muscle-strength-in-older-men
#7
Maryam Goudarzian, Samira Ghavi, Ardalan Shariat, Hossein Shirvani, Mostafa Rahimi
This study was designed to evaluate the effects of whole body vibration (WBV) exercise, mental training (MT), and the concurrent effect of WBV and MT on lower body balance, neuromuscular performance, and leg muscle strength in elderly men. In a randomized control trial study with parallel group design, 42 older men (mean±standard deviation age, 68±5.78 years) were randomly divided into four groups: WBV (n=11), MT (n=12), WBV+MT (n=10), and control (n=9) groups. The protocol of training consisted of three sessions per week for 8 weeks and about 30 min for each session...
October 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29103600/upper-body-accelerations-during-planned-gait-termination-in-young-and-older-women
#8
Lorenzo Rum, Luca Laudani, Andrea Macaluso, Giuseppe Vannozzi
Transitory tasks, such as gait termination, involve interactions between neural and biomechanical factors that challenge postural stability and head stabilization patterns in older adults. The aim of the study was to compare upper body patterns of acceleration during planned gait termination at different speeds between young and older women. Ten young and 10 older women were asked to carry out three gait termination trials at slow, comfortable and fast speed. A stereophotogrammetric system and a 15-body segments model were used to calculate antero-posterior whole-body Center of Mass (AP CoM) speed and to reconstruct the centroids of head, trunk and pelvis segments...
October 25, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29100597/determinants-of-gait-stability-while-walking-on-a-treadmill-a-machine-learning-approach
#9
Fabienne Reynard, Philippe Terrier
Dynamic balance in human locomotion can be assessed through the local dynamic stability (LDS) method. Whereas gait LDS has been used successfully in many settings and applications, little is known about its sensitivity to individual characteristics of healthy adults. Therefore, we reanalyzed a large dataset of accelerometric data measured for 100 healthy adults from 20 to 70 years of age performing 10 min treadmill walking. We sought to assess the extent to which the variations of age, body mass and height, sex, and preferred walking speed (PWS) could influence gait LDS...
October 25, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29100144/moving-from-laboratory-to-real-life-conditions-influence-on-the-assessment-of-variability-and-stability-of-gait
#10
Paola Tamburini, Fabio Storm, Chris Buckley, Maria Cristina Bisi, Rita Stagni, Claudia Mazzà
The availability of wearable sensors allows shifting gait analysis from the traditional laboratory settings, to daily life conditions. However, limited knowledge is available about whether alterations associated to different testing environment (e.g. indoor or outdoor) and walking protocols (e.g. free or controlled), result from actual differences in the motor behaviour of the tested subjects or from the sensitivity to these changes of the indexes adopted for the assessment. In this context, it was hypothesized that testing environment and walking protocols would not modify motor control stability in the gait of young healthy adults, who have a mature and structured gait pattern, but rather the variability of their motor pattern...
October 26, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29089992/corticoreticular-tract-lesion-in-children-with-developmental-delay-presenting-with-gait-dysfunction-and-trunk-instability
#11
Yong Min Kwon, Jessica Rose, Ae Ryoung Kim, Su Min Son
The corticoreticular tract (CRT) is known to be involved in walking and postural control. Using diffusion tensor tractography (DTT), we investigated the relationship between the CRT and gait dysfunction, including trunk instability, in pediatric patients. Thirty patients with delayed development and 15 age-matched, typically-developed (TD) children were recruited. Fifteen patients with gait dysfunction (bilateral trunk instability) were included in the group A, and the other 15 patients with gait dysfunction (unilateral trunk instability) were included in the group B...
September 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29078732/abnormal-turning-and-its-association-with-self-reported-symptoms-in-chronic-mtbi
#12
Peter C Fino, Lucy Parrington, Merissa Walls, Emily Sippel, Timothy E Hullar, James C Chesnutt, Laurie A King
Turning is common in daily activity and requires rapid, coordinated reorientation of the head and trunk, and pelvis towards the new direction of travel. Yet, turning gait has not been well explored in populations with mild traumatic brain injury (mTBI) who may alter their turning behavior according to self-perceived symptoms or motor dysfunction. The purpose of this study was to examine turning velocities and coordination in adults with chronic mTBI (>3 months post-injury and still reporting balance complaints) during a task simulating everyday ambulation...
October 27, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29075175/three-dimensional-trunk-and-lower-limbs-characteristics-during-gait-in-patients-with-huntington-s-disease
#13
Elzbieta Mirek, Magdalena Filip, Wiesław Chwała, Krzysztof Banaszkiewicz, Monika Rudzinska-Bar, Jadwiga Szymura, Szymon Pasiut, Andrzej Szczudlik
Objective: A number of studies on gait disturbances have been conducted, however, no clear pattern of gait disorders was described. The aim of the study was to characterize the gait pattern in HD patients by conducting analysis of mean angular movement changes the lower limb joints and trunk (kinematics parameters). Methods: The study group consisted of 30 patients with HD (17 women and 13 men). The reference data include the results of 30 healthy subjects (17 women and 13 men). Registration of gait with the Vicon 250 system was performed using passive markers attached to specific anthropometric points directly on the skin, based on the Golem biomechanical model (Oxford Metrics Ltd...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29065630/influence-of-gait-speeds-on-contact-forces-of-lower-limbs
#14
Xin Wang, Yue Ma, Bo Yi Hou, Wing-Kai Lam
While walking with fast speed aims to promote health and fitness of individuals, the potential risk on lower limb joint loading across walking speed is still unknown. In order to determine the joint contact force loading associated with different walking speeds, fifteen young male and fifteen female participants performed barefoot walking across different speeds (regular = 1.1 m/s, medium = 1.4 m/s, and fast = 1.7 m/s). The synchronized motion and ground reaction force (GRF) data were captured by Codamotion capture system and AMTI force platform...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29060644/antagonist-thigh-muscle-activity-in-6-to-8-year-old-children-assessed-by-surface-emg-during-walking
#15
Francesco Di Nardo, Annachiara Strazza, Alessandro Mengarelli, Serena Ercolani, Laura Burattini, Sandro Fioretti
Analysis of muscle co-contractions seems to be relevant in the characterization of children pathologies such as spastic cerebral palsy. The aim of the study was the quantification of thigh-muscle co-contractions during walking in healthy children. To this aim, the Statistical Gait Analysis, a recent methodology providing a statistical characterization of gait, was performed on surface EMG signals from Vastus Medialis (VM) and Lateral Hamstrings (LH) in 30 healthy 6-to-8-year-old children. Muscular co-contraction was assessed as the overlapping period between activation intervals of agonist and antagonist muscles...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29060031/effects-of-wide-step-walking-on-swing-phase-hip-muscle-forces-and-spatio-temporal-gait-parameters
#16
Soheil Bajelan, Hanatsu Nagano, Tony Sparrow, Rezaul K Begg
Human walking can be viewed essentially as a continuum of anterior balance loss followed by a step that re-stabilizes balance. To secure balance an extended base of support can be assistive but healthy young adults tend to walk with relatively narrower steps compared to vulnerable populations (e.g. older adults and patients). It was, therefore, hypothesized that wide step walking may enhance dynamic balance at the cost of disturbed optimum coupling of muscle functions, leading to additional muscle work and associated reduction of gait economy...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29059812/movement-augmentation-to-evaluate-human-control-of-locomotor-stability
#17
Geoffrey Brown, Mengnan Mary Wu, Felix C Huang, Keith E Gordon
Controlling center of mass (COM) position and velocity within a dynamic base of support is essential for gait stability. This skill is often compromised following neurologic injury, creating a need to develop effective interventions to enhance gait stability. A movement augmentation paradigm applied to walking could potentially be used to improve control of COM dynamics. We have developed a cable robot system, the Agility Trainer, to apply continuous frontal-plane forces to the pelvis during treadmill walking...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29058268/early-diagnosed-cerebrotendinous-xanthomatosis-patients-clinical-neuroradiological-characteristics-and-therapy-results-of-a-single-center-from-turkey
#18
Tanyel Zubarioglu, Ertugrul Kiykim, Gozde Yesil, Duhan Demircioglu, Mehmet Serif Cansever, Cengiz Yalcinkaya, Cigdem Aktuglu-Zeybek
Cerebrotendinous xanthomatosis (CTX) is a lipid storage disorder caused by defective sterol 27-hydroxylase activity. In spite of subtle clinical signs beginning from childhood, CTX is generally diagnosed lately. The aim of this study is to evaluate clinical, neuroradiological findings and therapy responses of pediatric CTX patients and raise awareness to early features of disease. Patients who were molecularly diagnosed as CTX before 18 years of age were included in study. Clinical, epidemiological, radiological and genotypic features of patients and chenodeoxycholic acid (CDCA) therapy responses were reviewed retrospectively...
October 22, 2017: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/29057363/congenital-malformed-posterior-arch-of-atlas-with-fusion-defect-a-case-of-developmental-canal-stenosis-causing-cervical-myelopathy
#19
Siddharth Shah, Samir Dalvie, Ravi Ranjan Rai
Congenital anomalies of the posterior arch of the atlas (PAA) are usually asymptomatic and diagnosed incidentally. Very rarely, they present with cervical myelopathy, usually being associated with partial aplasia or agenesis of PAA. We describe a 44-year-old lady with cervical myelopathy secondary to a malformed PAA with developmental atlas-level spinal stenosis and a congenital posterior fusion defect with persistent midline cleft showing significant non-osseous fibro-cartilaginous hypertrophy, causing critical cord compression...
September 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/29037625/effects-of-proprioceptive-neuromuscular-facilitation-on-balance-strength-and-mobility-of-an-older-adult-with-chronic-stroke-a-case-report
#20
Christopher S Cayco, Edward James R Gorgon, Rolando T Lazaro
This study described the effects of a proprioceptive neuromuscular facilitation (PNF) program on balance, strength, and mobility in an older adult with chronic stroke. The patient was male, aged 69 years, with right hemiplegia for 17 years, and had diminished balance, balance confidence, lower extremity (LE) strength, and gait velocity. He received 1 h of PNF-based therapy thrice a week for six weeks. Outcome measures were: Mini-BESTest, limits of stability (LOS), Activities-Specific Balance Confidence Scale (ABC), Five Time Sit-to-Stand Test (FTSST), Upright Motor Control Test (UMCT), and 10 Meter Walk Test (10 MWT)...
October 2017: Journal of Bodywork and Movement Therapies
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