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"Phase angle"

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https://www.readbyqxmd.com/read/28321276/phase-angle-obtained-by-bioelectrical-impedance-analysis-independently-predicts-mortality-in-patients-with-cirrhosis
#1
Giliane Belarmino, Maria Cristina Gonzalez, Raquel S Torrinhas, Priscila Sala, Wellington Andraus, Luiz Augusto Carneiro D'Albuquerque, Rosa Maria R Pereira, Valéria F Caparbo, Graziela R Ravacci, Lucas Damiani, Steven B Heymsfield, Dan L Waitzberg
AIM: To evaluate the prognostic value of the phase angle (PA) obtained from bioelectrical impedance analysis (BIA) for mortality prediction in patients with cirrhosis. METHODS: In total, 134 male cirrhotic patients prospectively completed clinical evaluations and nutritional assessment by BIA to obtain PAs during a 36-mo follow-up period. Mortality risk was analyzed by applying the PA cutoff point recently proposed as a malnutrition marker (PA ≤ 4.9°) in Kaplan-Meier curves and multivariate Cox regression models...
March 8, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28319679/evaluation-of-body-composition-with-bioimpedence-a-comparison-between-athletic-and-non-athletic-children
#2
Domenico Meleleo, Nicola Bartolomeo, Liliana Cassano, Alessandro Nitti, Giovanna Susca, Giuseppina Mastrototaro, Umberto Armenise, Annapaola Zito, Fiorella Devito, Pietro Scicchitano, Marco Matteo Ciccone
PURPOSE: Conventional Bioelectrical Impedance Analysis (BIA) or Bioelectrical Impedance Vector Analysis (BIVA) can provide direct evaluations of body composition. The purpose of this study was to evaluate lean and fat mass (FM), and hydration of children involved in daily competitive sports. METHODS: 190 non-athletic [8.2-10.5 years] and 29 competitive children [8.0-10.5 years] were enrolled. They were evaluated: at baseline (t0), 6 months (t1) and one year (t2)...
March 20, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28315876/angiotensin-converting-enzyme-ins-del-polymorphism-and-body-composition-the-intermediary-role-of-hydration-status
#3
Laura Bordoni, Valerio Napolioni, Francesca Marchegiani, Emilio Amadio, Rosita Gabbianelli
BACKGROUND: The well-known insertion/deletion polymorphism (rs4646994) of the angiotensin-converting enzyme (ACE) gene has been previously associated with obesity, blood flow, muscular strength, and ACE enzyme activity. Despite the relevant role of ACE in homeostasis, few data are currently available on the relationship between rs4646994 and hydration status. Thus, we tested the association between the ACE Ins/Del polymorphism, body composition, and hydration status in a young Italian population...
March 18, 2017: Journal of Nutrigenetics and Nutrigenomics
https://www.readbyqxmd.com/read/28304354/accurate-compensation-of-attitude-angle-error-in-a-dual-axis-rotation-inertial-navigation-system
#4
Rui Jiang, Gongliu Yang, Rui Zou, Jing Wang, Jing Li
In the dual-axis rotation inertial navigation system (INS), besides the gyro error, accelerometer error, rolling misalignment angle error, and the gimbal angle error, the shaft swing angle and the axis non-orthogonal angle also affect the attitude accuracy. Through the analysis of the structure, we can see that the shaft swing angle and axis non-orthogonal angle will produce coning errors which cause the fluctuation of the attitude. According to the analysis of the rotation vector, it can be seen that the coning error will generate additional drift velocity along the rotating shaft, which can reduce the navigation precision of the system...
March 17, 2017: Sensors
https://www.readbyqxmd.com/read/28303754/effects-of-running-experience-on-coordination-and-its-variability-in-runners
#5
Pablo Floría, Alberto Sánchez-Sixto, Reed Ferber, Andrew J Harrison
The purpose of this study was to examine the differences in coordination variability in running gait between trained runners and non-runners using continuous relative phase (CRP) analysis. Lower extremity kinematic data were collected for 22 participants during the stance phase. The participants were assigned to either a runner or non-runner group based on running volume training. Segment coordination and coordination variability were calculated for selected hip-knee and knee-ankle couplings. Independent t-tests and magnitude-based inferences were used to compare the 2 groups...
March 17, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28303380/nutritional-and-functional-factors-as-prognostic-of-surgical-cancer-patients
#6
Jéssica Härter, Silvana Paiva Orlandi, Maria Cristina Gonzalez
PURPOSE: We evaluated phase angle, sarcopenia, and handgrip strength as prognostic factors of postoperative morbimortality in patients with cancer. METHODOLOGY: We conducted a prospective study with 60 oncology patients admitted for elective surgery between November 2015 and May 2016. We calculated the standardized phase angle (SPA) and the skeletal mass index of the subjects based on their bioelectrical impedance tests. Handgrip strength (HGS) was measured using a hydraulic dynamometer...
March 16, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28289485/pneurip-tm-a-novel-respiratory-inductance-plethysmography-monitor
#7
Tariq Rahman, Ralph Page, Christopher Page, Jean-Remy Bonnefoy, Tim Cox, Thomas H Shaffer
Objective pulmonary function (PF) evaluation is essential for the diagnosis, monitoring, and management of many pediatric respiratory diseases as seen in the emergency room, intensive care, and outpatient settings. In this paper, the development and testing of a new noninvasive PF instrument, pneuRIP(TM), which utilizes respiratory inductance plethysmography (RIP) are discussed. The pneuRIP(TM) hardware includes a small circuit board that connects to the RIP bands and measures and wirelessly transmits the band inductance data to any designated wirelessly connected tablet...
March 2017: Journal of Medical Devices
https://www.readbyqxmd.com/read/28285340/enhancement-of-bone-shadow-region-using-local-phase-based-ultrasound-transmission-maps
#8
Ilker Hacihaliloglu
PURPOSE: Ultrasound is increasingly being employed in different orthopedic procedures as an imaging modality for real-time guidance. Nevertheless, low signal-to-noise-ratio and different imaging artifacts continue to hamper the success of ultrasound-based procedures. Bone shadow region is an important feature indicating the presence of bone/tissue interface in the acquired ultrasound data. Enhancement and automatic detection of this region could improve the sensitivity of ultrasound for imaging bone and result in improved guidance for various orthopedic procedures...
March 11, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28285255/relationships-between-circadian-measures-depression-and-response-to-antidepressant-treatment-a-preliminary-investigation
#9
Leslie M Swanson, Helen J Burgess, Edward D Huntley, Holli Bertram, Ann Mooney, Jennifer Zollars, Richard Dopp, Robert Hoffmann, Roseanne Armitage, J Todd Arnedt
Few studies have examined relationships between circadian rhythms and unipolar major depressive disorder. Further, no study to date has examined circadian markers as predictors of response to depression treatment. In the present study, we examined associations between circadian timing and its alignment with sleep and depression severity in 30 adults with major depressive disorder who completed a randomized controlled trial of two weeks of time in bed (TIB) restriction administered adjunctive to fluoxetine, with a focus on sex differences...
March 8, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28285245/a-disconnection-between-nutritional-status-in-terms-of-body-mass-index-and-phase-angle-and-psychopathology-in-anorexia-nervosa
#10
Fortunato Federico, Demartini Benedetta, Maffoni Claudia, Apicella Emanuela, Leonardi Valentina, Mendolicchio Leonardo
The aim of our study was to investigate the relationship between nutritional status (body mass index and phase angle) and psychological symptoms at admission and discharge in a residential population of anorexic patients. We also aimed to determine the evolution of the above psychological symptoms and nutrition rehabilitation from admission to discharge. Thirty-six consecutive patients were included. The evaluation was performed using the following measures at admission and discharge: body mass index, phase angle, Eating Disorders Inventory-3, Multiphasic Personality Inventory-2 and Body Uneasiness...
February 20, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28282216/remote-sensing-of-potential-biosignatures-from-rocky-liquid-or-icy-exo-planetary-surfaces
#11
Olivier Poch, Joachim Frey, Isabel Roditi, Antoine Pommerol, Bernhard Jost, Nicolas Thomas
To detect signs of life by remote sensing on objects of our Solar System and on exoplanets, the characterization of light scattered by surface life material could complement possible clues given by the atmospheric composition. We reviewed the reflectance spectra of a broad selection of major biomolecules that constitute terrestrial carbon-based life from 0.4 to 2.4 μm, and we discuss their detectability through atmospheric spectral windows. Biomolecule features in the near-infrared (0.8-2.4 μm) will likely be obscured by water spectral features and some atmospheric gases...
March 2017: Astrobiology
https://www.readbyqxmd.com/read/28277301/body-composition-analysis-and-adipocytokine-concentrations-in-haemodialysis-patients-abdominal-fat-gain-as-an-added-cardiovascular-risk-factor-abdominal-fat-gain-and-cardiovascular-risk
#12
Elena González, Juan J Díez, Almudena Pérez Torres, María Auxiliadora Bajo, Gloria Del Peso, Rafael Sánchez-Villanueva, Cristina Grande, Olaia Rodríguez, Mónica Coronado, Carmen Gómez Candela, Mariana Díaz-Almirón, Pedro Iglesias, Rafael Selgas
INTRODUCTION: Abdominal fat and its increment over time in particular has become a cardiovascular risk factor in uraemic patients. OBJECTIVES: To analyse changes in abdominal fat in haemodialysis patients over one year and study their possible correlation with the variation in adipocytokine serum levels. As a secondary objective, we tried to validate the data obtained by bioelectrical impedance analysis (BIA) with data obtained by dual X-ray absorptiometry (DXA)...
October 26, 2016: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/28265710/high-throughput-and-automatic-colony-formation-assay-based-on-impedance-measurement-technique
#13
Kin Fong Lei, Chich-Hao Kao, Ngan-Ming Tsang
To predict the response of in vivo tumors, in vitro culture of cell colonies was suggested to be a standard assay to achieve high clinical relevance. To describe the responses of cell colonies, the most widely used quantification method is to count the number and size of cell colonies under microscope. That makes the colony formation assay infeasible to be high throughput and automated. In this work, in situ analysis of cell colonies suspended in soft hydrogel was developed based on impedance measurement technique...
March 2, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28262322/biochemical-and-anthropometric-correlates-of-bio-electrical-impedance-parameters-in-severely-malnourished-children-a-cross-sectional-study
#14
Tsinuel Girma, Anne-Louise Hother Nielsen, Pernille Kæstel, Alemseged Abdissa, Kim F Michaelsen, Henrik Friis, Jonathan C K Wells
INTRODUCTION: Despite expanding use of bio-impedance (BI), little is known about its pathophysiologic significance and biological correlates OBJECTIVE: Determine correlations of BI parameters with anthropometry and biomarkers of electrolyte homeostasis, inflammation and liver function in children with severe acute malnutrition (SAM). METHODS: We studied Ethiopian children with SAM (mid-arm circumference <11·0 cm or weight-for-height <70% of the NCHS growth reference median and/or nutritional oedema) at hospitalization...
February 24, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28261013/unified-phase-variables-of-relative-degree-two-for-human-locomotion
#15
Dario J Villarreal, Robert D Gregg
A starting point to achieve stable locomotion is synchronizing the leg joint kinematics during the gait cycle. Some biped robots parameterize a nonlinear controller (e.g., input-output feedback linearization) whose main objective is to track specific kinematic trajectories as a function of a single mechanical variable (i.e., a phase variable) in order to allow the robot to walk. A phase variable capable of parameterizing the entire gait cycle, the hip phase angle, has been used to control wearable robots and was recently shown to provide a robust representation of the phase of human gait...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227942/unified-phase-variables-of-relative-degree-two-for-human-locomotion
#16
Dario J Villarreal, Robert D Gregg, Dario J Villarreal, Robert D Gregg, Robert D Gregg, Dario J Villarreal
A starting point to achieve stable locomotion is synchronizing the leg joint kinematics during the gait cycle. Some biped robots parameterize a nonlinear controller (e.g., input-output feedback linearization) whose main objective is to track specific kinematic trajectories as a function of a single mechanical variable (i.e., a phase variable) in order to allow the robot to walk. A phase variable capable of parameterizing the entire gait cycle, the hip phase angle, has been used to control wearable robots and was recently shown to provide a robust representation of the phase of human gait...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28223508/c-terminal-phosphorylation-regulates-the-kinetics-of-a-subset-of-melanopsin-mediated-behaviors-in-mice
#17
Preethi Somasundaram, Glenn R Wyrick, Diego Carlos Fernandez, Alireza Ghahari, Cindy M Pinhal, Melissa Simmonds Richardson, Alan C Rupp, Lihong Cui, Zhijian Wu, R Lane Brown, Tudor Constantin Badea, Samer Hattar, Phyllis R Robinson
Intrinsically photosensitive retinal ganglion cells (ipRGCs) express the photopigment melanopsin and mediate several non-image-forming visual functions, including circadian photoentrainment and the pupillary light reflex (PLR). ipRGCs act as autonomous photoreceptors via the intrinsic melanopsin-based phototransduction pathway and as a relay for rod/cone input via synaptically driven responses. Under low light intensities, where only synaptically driven rod/cone input activates ipRGCs, the duration of the ipRGC response will be determined by the termination kinetics of the rod/cone circuits...
March 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28222963/performance-of-subjective-global-assessment-and-malnutrition-inflammation-score-for-monitoring-the-nutritional-status-of-older-adults-on-hemodialysis
#18
Fernanda Santin, Juliana Rodrigues, Flávia Barbosa Brito, Carla Maria Avesani
BACKGROUND & AIMS: Studies assessing the performance of 7-point subjective global assessment (7p-SGA) and malnutrition inflammation score (MIS) to assess longitudinal changes in nutritional status are lacking. Thus, we aimed to investigate whether longitudinal changes in 7p-SGA and MIS were associated with changes in objective parameters of nutritional status, as well as to evaluate the prognostic value of 7p-SGA and MIS on hospitalization events. METHODS: One hundred and four patients aged ≥60 years (70...
February 3, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28218645/mediterranean-diet-and-phase-angle-in-a-sample-of-adult-population-results-of-a-pilot-study
#19
Luigi Barrea, Giovanna Muscogiuri, Paolo Emidio Macchia, Carolina Di Somma, Andrea Falco, Maria Cristina Savanelli, Annamaria Colao, Silvia Savastano
The Mediterranean diet is a healthy dietary pattern known to actively modulate the cell membrane properties. Phase angle (PhA) is a direct measure by Bioelectrical Impedance Analysis (BIA) used as marker of cell membrane integrity. Both food behaviour and PhA are influenced by age, sex and body weight. The aim of this study was to cross-sectionally evaluate the association between the adherence to Mediterranean diet and PhA in 1013 healthy adult patients stratified according to sex, age, and body mass index (BMI)...
February 17, 2017: Nutrients
https://www.readbyqxmd.com/read/28199889/polyphosphate-and-myofibrillar-protein-extract-promote-transglutaminase-mediated-enhancements-of-rheological-and-textural-properties-of-pse-pork-meat-batters
#20
Tomasz Lesiow, Gregg K Rentfrow, Youling L Xiong
The objective of this study was to improve the rheological (storage modulus G'; phase angle δ) and textural (hardness; breaking force) properties of nitrite-cured sausage batters prepared from pale, soft, exudative (PSE) pork with microbial transglutaminase (TG) using isolated myofibrillar protein (MP) or MP extracted by sodium tripolyphosphate (TPP) as substrates. While TG alone significantly enhanced G', δ and hardness, its combination with TPP was more pronounced as these product quality parameters were increased to the level equal to that of the counterpart batter made from normal (red, firm, non-exudative, RFN) pork...
February 5, 2017: Meat Science
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