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postural analysis

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https://www.readbyqxmd.com/read/28526560/limb-flexion-induced-axial-compression-and-bending-in-human-femoropopliteal-artery-segments
#1
William Poulson, Alexey Kamenskiy, Andreas Seas, Paul Deegan, Carol Lomneth, Jason MacTaggart
BACKGROUND: High failure rates of femoropopliteal artery (FPA) interventions are often attributed in part to severe mechanical deformations that occur with limb movement. Axial compression and bending of the FPA likely play significant roles in FPA disease development and reconstruction failure, but these deformations are poorly characterized. The goal of this study was to quantify axial compression and bending of human FPAs that are placed in positions commonly assumed during the normal course of daily activities...
May 16, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28525675/acellular-dermal-matrix-and-heel-reconstruction-a-new-prospective
#2
Alessandro Scalise, Matteo Torresetti, Federica Verdini, Marianna Capecci, Elisa Andrenelli, Alessandro Mengarelli, Maria Gabriella Ceravolo, Sandro Fioretti, Giovanni Di Benedetto
BACKGROUND: Heel reconstruction represents a challenge for all plastic surgeons due to the anatomical and functional features of this weight-bearing area. In the last decade a combined use of acellular dermal matrices and skin grafts has been proposed as a reliable and less invasive alternative for complex wound management; nevertheless only a few cases have been reported in the literature. METHODS: We describe the long-term outcome of 2 cases of severe degloving trauma of the plantar region with massive soft tissue defects of the foot, that underwent surgical reconstruction with artificial dermis and skin grafts...
May 19, 2017: Journal of Applied Biomaterials & Functional Materials
https://www.readbyqxmd.com/read/28523740/new-data-about-semicircular-canal-morphology-and-locomotion-in-modern-hominoids
#3
Anne Le Maître, Philipp Schuetz, Patrick Vignaud, Michel Brunet
The labyrinth has two functional parts: the cochlea for audition and the vestibular system for equilibrioception. In the latter, the semicircular ducts and the otolithic organs are sensitive to rotational and linear accelerations of the head, respectively. The labyrinthine morphology influences perception accuracy, hence the adaptation to a specific locomotor pattern. The aim of this study is to determine the relationship between locomotion and semicircular canal morphology using geometric morphometrics, and to explain these links with existing functional models...
May 19, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28516967/body-worn-triaxial-accelerometer-coherence-and-reliability-related-to-static-posturography-in-unilateral-vestibular-failure
#4
M Alessandrini, A Micarelli, A Viziano, I Pavone, G Costantini, D Casali, F Paolizzo, G Saggio
Since changes in vestibular function may be one cause of disequilibrium, major advances in measuring postural control and sensory integration in vestibular impairments have been achieved by using posturography. However, in order to overcome problems related to this type of technology, body-worn accelerometers (ACC) have been proposed as a portable, low-cost alternative to posturography for measurements of postural sway in a friendly and ecologic environment. Due to the fact that no study to date has shown the experimental validity of ACC-based measures of body sway with respect to posturography for subjects with vestibular deficits, the aim of the present study was: i) to develop and validate a practical tool that can allow clinicians to measure postural sway derangements in an otoneurological setting by ACC, and ii) to provide reliable, sensitive and accurate automatic analysis of sway that could help in discriminating unilateral vestibular failure (UVF) patients...
June 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28512630/hand-grasping-synergies-as-biometrics
#5
Vrajeshri Patel, Poojita Thukral, Martin K Burns, Ionut Florescu, Rajarathnam Chandramouli, Ramana Vinjamuri
Recently, the need for more secure identity verification systems has driven researchers to explore other sources of biometrics. This includes iris patterns, palm print, hand geometry, facial recognition, and movement patterns (hand motion, gait, and eye movements). Identity verification systems may benefit from the complexity of human movement that integrates multiple levels of control (neural, muscular, and kinematic). Using principal component analysis, we extracted spatiotemporal hand synergies (movement synergies) from an object grasping dataset to explore their use as a potential biometric...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/28511367/neurobehavioural-changes-in-a-hemiparkinsonian-rat-model-induced-by-rotenone
#6
REVIEW
Sukala Puthuparambil Maniyath, Narayanan Solaiappan, Muthusamy Rathinasamy
INTRODUCTION: Rotenone, a mitochondrial complex I inhibitor is used as a neurotoxin agent to reproduce the neuropathological, and behavioural feature of Parkinson's Disease (PD) in rat. Due to acute and chronic exposure of rotenone with various doses through different routes of administration, mortality is being reported. Low dose takes a longer duration to produce PD symptoms in animals. This present study was designed to create hemiparkinsonian 'partial' lesion model by rotenone at a single moderate dose in two sites of striatum in albino rats and also to assess its toxicity by behavioural parameters and by microscopic study...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28508821/measuring-the-negative-impact-of-long-sitting-hours-at-high-school-students-using-the-microsoft-kinect
#7
Norbert Gal-Nadasan, Emanuela Georgiana Gal-Nadasan, Vasile Stoicu-Tivadar, Dan V Poenaru, Diana Popa-Andrei
This paper suggests the usage of the Microsoft Kinect to detect the onset of the scoliosis at high school students due to incorrect sitting positions. The measurement is done by measuring the overall posture in orthostatic position using the Microsoft Kinect. During the measuring process several key points of the human body are tracked like the hips and shoulders to form the postural data. The test was done on 30 high school students who spend 6 to 7 hours per day in the school benches. The postural data is statistically processed by IBM Watson's Analytics...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28508177/standing-postural-control-in-individuals-with-autism-spectrum-disorder-systematic-review-and-meta-analysis
#8
Yi Huey Lim, Katie Partridge, Sonya Girdler, Susan L Morris
Impairments in postural control affect the development of motor and social skills in individuals with autism spectrum disorder (ASD). This review compared the effect of different sensory conditions on static standing postural control between ASD and neurotypical individuals. Results from 19 studies indicated a large difference in postural control between groups across all sensory conditions. This review revealed sensorimotor and multiple sensory processing deficits in ASD. The tendency for individuals with ASD to be more susceptible to postural instability with use of visual information compared with somatosensory information suggests perinatal alterations in sensory development...
May 15, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28507630/relationship-between-gait-parameters-and-postural-stability-in-early-and-late-parkinson-s-disease-and-visual-feedback-based-balance-training-effects
#9
Mohieldin M Ahmed, Douaa M Mosalem, Aziz K Alfeeli, Ayyoub B Baqer, Doaa Youssry Soliman
BACKGROUND: Gait disorders or postural instability has been done before. However, lack of reviews has addressed the relation between gait and postural stability in Parkinson's disease (PD). AIM: The aim was to evaluate the relation between gait parameters and postural stability in early and late stages of PD. MATERIALS AND METHODS: The forty-one idiopathic PD patients were divided into two groups into a group (A) considered as early PD and group (B) considered as late ambulant PD...
April 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28507235/assessing-the-strength-of-cardiac-and-sympathetic-baroreflex-controls-via-transfer-entropy-during-orthostatic-challenge
#10
Alberto Porta, Andrea Marchi, Vlasta Bari, Beatrice De Maria, Murray Esler, Elisabeth Lambert, Mathias Baumert
The study assesses the strength of the causal relation along baroreflex (BR) in humans during an incremental postural challenge soliciting the BR. Both cardiac BR (cBR) and sympathetic BR (sBR) were characterized via BR sequence approaches from spontaneous fluctuations of heart period (HP), systolic arterial pressure (SAP), diastolic arterial pressure (DAP) and muscle sympathetic nerve activity (MSNA). A model-based transfer entropy method was applied to quantify the strength of the coupling from SAP to HP and from DAP to MSNA...
June 28, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28506861/do-urinary-leakage-circumstances-in-women-with-urinary-incontinence-correlate-with-physician-diagnosis-and-urodynamic-results-a-questionnaire-validation-study
#11
Krystel Nyangoh Timoh, Arnaud Fauconnier, Marion Ravit, Georges Bader, Catalina Varas Ramos, Xavier Fritel
OBJECTIVES: To investigate if leakage circumstances collected using the Urinary Leakage Circumstances Questionnaire (ULCQ) are correlated with physician diagnosis and urodynamic results and resolve after surgery. METHODS: The ULCQ was developed to investigate leakage circumstances encountered by incontinent women. Women completed both the ULCQ and the International Consultation on Incontinence Questionnaire-Urinary Incontinence Short Form (ICIQ-UI SF) before clinical and urodynamic exam...
May 12, 2017: Urology
https://www.readbyqxmd.com/read/28506280/optimouse-a-comprehensive-open-source-program-for-reliable-detection-and-analysis-of-mouse-body-and-nose-positions
#12
Yoram Ben-Shaul
BACKGROUND: Accurate determination of mouse positions from video data is crucial for various types of behavioral analyses. While detection of body positions is straightforward, the correct identification of nose positions, usually more informative, is far more challenging. The difficulty is largely due to variability in mouse postures across frames. RESULTS: Here, we present OptiMouse, an extensively documented open-source MATLAB program providing comprehensive semiautomatic analysis of mouse position data...
May 15, 2017: BMC Biology
https://www.readbyqxmd.com/read/28506006/immediate-responses-to-backpack-carriage-on-postural-angles-in-young-adults-a-crossover-randomized-self-controlled-study-with-repeated-measures
#13
Ukachukwu O Abaraogu, Elochukwu F Ezenwankwo, Ijeoma B Nwadilibe, Geoffrey C Nwafor, Bianca O Ugwuele, Pascal C Uzoh, Ifunanya Ani, Kinsley Amarachineke, Collins Atuma, Obed Ewelunta
BACKGROUND: Heavy backpacks have been associated with various postural changes and consequently musculoskeletal disorders. OBJECTIVE: We evaluated the immediate responses of varying backpack loads on cranio-vertebral angle (CVA), sagittal shoulder angle (SSA) and trunk forward lean (TFL) of young adults between the ages of 18-25 years. METHODS: This was a 3×3 cross over randomized controlled study with repeated measures among a convenience sample of young adults (n = 30; 50% male, 50% female)...
May 6, 2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/28505982/factors-contributing-to-perceived-walking-difficulties-in-people-with-parkinson-s-disease
#14
Manzur Kader, Susann Ullén, Susanne Iwarsson, Per Odin, Maria H Nilsson
BACKGROUND: While walking difficulties are common in people with Parkinson's disease (PD), little is known about factors that independently contribute to their perceived walking difficulties. OBJECTIVE: To identify factors that independently contribute to perceived walking difficulties in people with PD. METHODS: This study involved 243 (62% men) participants; their mean (min-max) age and PD duration were 70 (45-93) and 8 (1-43) years, respectively...
May 9, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28505962/assessment-of-body-parameters-symmetry-in-child-violinists
#15
Anna Cygańska, Aleksandra Truszczyńska-Baszak, Justyna Drzaƚ-Grabiec, Adam Tarnowski
BACKGROUND: Playing violin may lead to overload of the locomotor system. OBJECTIVE: The aim of this study was to assess body parameters for trunk symmetry in child violinists and compare with the control group. METHODS: We analyzed body posture of 101 children aged 7-12 years, mean age 11.09 ± 9.46, 49 child violinists and control group of 52 children. RESULTS: We found statistically significant differences for the difference in depth of the lower corners of scapulae and upper posterior spina iliaca, though greater asymmetries were found in the clinical control group...
May 5, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28503292/historical-influence-on-the-practice-of-chiropractic-radiology-part-i-a-survey-of-diplomates-of-the-american-chiropractic-college-of-radiology
#16
Kenneth J Young
BACKGROUND: It is known that not all chiropractors follow mainstream guidelines on the use of diagnostic ionising radiation. Various reasons have been discussed in the literature, including using radiography to screen for congenital anomalies, to perform postural analysis, to search for contraindications to spinal manipulation, and to document chiropractic subluxations, i.e., tiny anatomical displacements of vertebrae thought to affect nerves and health. The visualisation of subluxations was the reason chiropractic first adopted the x-ray in 1910...
2017: Chiropractic & Manual Therapies
https://www.readbyqxmd.com/read/28502656/temporal-cohorts-of-lineage-related-neurons-perform-analogous-functions-in-distinct-sensorimotor-circuits
#17
Christopher C Wreden, Julia L Meng, Weidong Feng, Wanhao Chi, Zarion D Marshall, Ellie S Heckscher
Neuronal stem cell lineages are the fundamental developmental units of the brain, and neuronal circuits are the fundamental functional units of the brain. Determining lineage-circuitry relationships is essential for deciphering the developmental logic of circuit assembly. While the spatial distribution of lineage-related neurons has been investigated in a few brain regions [1-9], an important, but unaddressed question is whether temporal information that diversifies neuronal progeny within a single lineage also impacts circuit assembly...
May 5, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28497929/measurement-properties-of-the-swedish-modified-version-of-the-postural-assessment-scale-for-stroke-patients-swepass-using-rasch-analysis
#18
Carina U Persson, Annika Linder, Peter Hagell
BACKGROUND: A previous small-sample (n=150) Rasch analysis of the Swedish modified version of the Postural Assessment Scale for Stroke Patients (SwePASS) suggested problems regarding response categories and redundant items that need confirmation in larger samples with more severe strokes. AIM: To evaluate the measurement properties of the SwePASS in patients with acute stroke. DESIGN: A multicentre, cross-sectional study. SETTING: Two stroke units in Western Sweden...
May 12, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28493067/visuotactile-interaction-even-in-far-sagittal-space-in-older-adults-with-decreased-gait-and-balance-functions
#19
Wataru Teramoto, Keito Honda, Kento Furuta, Kaoru Sekiyama
Spatial proximity of signals from different sensory modalities is known to be a crucial factor in facilitating efficient multisensory processing in young adults. However, recent studies have demonstrated that older adults exhibit strong visuotactile interactions even when the visual stimuli were presented in a spatially disparate position from a tactile stimulus. This suggests that visuotactile peripersonal space differs between older and younger adults. In the present study, we investigated to what extent peripersonal space expands in the sagittal direction and whether this expansion was linked to the decline in sensorimotor functions in older adults...
May 10, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28491029/sample-entropy-univariate-and-multivariate-multi-scale-entropy-in-comparison-with-classical-postural-sway-parameters-in-young-healthy-adults
#20
Clint Hansen, Qin Wei, Jiann-Shing Shieh, Paul Fourcade, Brice Isableu, Lina Majed
The present study aimed to compare various entropy measures to assess the dynamics and complexity of center of pressure (COP) displacements. Perturbing balance tests are often used in healthy subjects to imitate either pathological conditions or to test the sensitivity of postural analysis techniques. Eleven healthy adult subjects were asked to stand in normal stance in three experimental conditions while the visuo-kinesthetic input was altered. COP displacement was recorded using a force plate. Three entropy measures [Sample Entropy (SE), Multi-Scale Entropy (MSE), and Multivariate Multi Scale Entropy (MMSE)] describing COP regularity at different scales were compared to traditional measures of COP variability...
2017: Frontiers in Human Neuroscience
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