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https://www.readbyqxmd.com/read/28222576/may-a-unitary-autonomic-index-help-assess-autonomic-cardiac-regulation-in-elite-athletes-preliminary-observations-on-the-national-italian-olympic-committee-team
#1
Roberto Sala, Mara Malacarne, Fabio Tosi, Manuela Benzi, Nadia Solaro, Stefano Tamorri, Antonio Spataro, Massimo Pagani, Daniela Lucini
BACKGROUND: Long term endurance training, as occurring in elite athletes, is associated to cardiac neural remodeling in favor of cardioprotective vagal mechanisms, resulting in resting bradycardia and augmented contribution of cardiac parasympathetic nerve activity. Autonomic assessment can be performed by way of Heart Rate Variability. This technique however provides multiple indices, and there is not yet complete agreement on their specific significance. Purpose of the study was to assess whether a rank transformation and radar plot could provide a unitary autonomic index, capable to show a correlation between intensity of individual work and quality of autonomic regulation...
February 21, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28222562/impaired-scaling-of-preparatory-postural-responses-to-repeated-balance-perturbations-in-parkinsonian-patients-with-comorbid-white-matter-disease
#2
David Cioncoloni, Lodovica Martelli, Deborah Rosignoli, Riccardo Mazzocchio
BACKGROUND: Postural instability may result from altered sequencing of automatic motor programs for anticipatory postural corrections and/or impaired motor learning in Parkinson Disease (PD) patients. Comorbid white matter disease is a major determinant of axial motor impairment, leading to poorer stability than nigrostriatal dopaminergic denervation per se. OBJECTIVE: To assess differences in anticipatory control of postural stability function between subjects affected by PD with comorbid leukoaraiosis (LPD), idiopathic Parkinson disease (IPD) and elderly health subjects (EHS) as control group...
February 10, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28222557/effect-of-foot-placements-during-sit-to-stand-transition-on-timed-up-and-go-test-in-stroke-subjects-a-cross-sectional-study
#3
Shreekanth D Karnad, Abraham M Joshua, Akshatha Nayak, B V Suresh, Prasanna Mithra, B Unnikrishnan
BACKGROUND & OBJECTIVE: Timed up and go (TUG) test is been used as a screening tool for the assessment of risk of falling in individuals following stroke. Though TUG test is a quick test, it has fair sensitivity compared to other tests. This study was carried out to obtain and compare test scores for different types of foot placements during sit to stand transition in stroke subjects. METHOD: A Cross-sectional study with purposive sampling included 28 post stroke subjects who were able to walk 6 meter with or without assistance...
February 8, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28222435/extracorporal-shock-waves-activate-migration-proliferation-and-inflammatory-pathways-in-fibroblasts-and-keratinocytes-and-improve-wound-healing-in-an-open-label-single-arm-study-in-patients-with-therapy-refractory-chronic-leg-ulcers
#4
Ilknur Aschermann, Seema Noor, Sascha Venturelli, Tobias Sinnberg, Christian Busch, Christian D Mnich
BACKGROUND/AIMS: Chronic leg ulcers (CLUs) are globally a major cause of morbidity and mortality with increasing prevalence. Their treatment is highly challenging, and many conservative, surgical or advanced therapies have been suggested, but with little overall efficacy. Since the 1980s extracorporal shock wave therapy (ESWT) has gained interest as treatment for specific indications. Here, we report that patients with CLU showed wound healing after ESWT and investigated the underlying molecular mechanisms...
February 20, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28222370/increased-postural-sway-in-persons-with-multiple-sclerosis-during-short-term-exposure-to-warm-ambient-temperatures
#5
Paula Y S Poh, Amy N Adams, Mu Huang, Dustin R Allen, Scott L Davis, Anna S Tseng, Craig G Crandall
BACKGROUND: Multiple sclerosis (MS) is a neurological disease marked by demyelination and axonal loss. Individuals with MS experience increases in clinical signs and symptoms during heat exposure. OBJECTIVE: To test the hypothesis that moderate heat exposure adversely affects postural sway in individuals with MS. METHODS: Ten individuals with relapsing-remitting MS (50±8y) and nine controls (47±10y) were examined under a Thermal and a Time Control trial...
February 8, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28222264/graphene-ink-laminate-structures-on-polyvinylidene-difluoride-pvdf-for-pyroelectric-thermal-energy-harvesting-and-waste-heat-recovery
#6
Daniel Zabek, Kris Seunarine, Chris Spacie, Chris R Bowen
Thermal energy can be effectively converted into electricity using pyroelectrics, which act as small scale power generator and energy harvesters providing nW to mW of electrical power. In this paper, a novel pyroelectric harvester based on free standing polyvinilidene difluoride (PVDF) was manufactured that exploits the high thermal radiation absorbance of a screen printed graphene-ink electrode structure to facilitate the conversion of the available thermal radiation energy into electrical energy. The interconnected graphene nanoplatelets (GNPs) enable high thermal radiation absorbance and high electrical conductivity along with the ease of deposition using a screen print technique...
February 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28222239/evolutionary-rescue-and-local-adaptation-under-different-rates-of-temperature-increase-a-combined-analysis-of-changes-in-phenotype-expression-and-genotype-frequency-in-paramecium-microcosms
#7
Joshua Killeen, Claire Gougat-Barbera, Sascha Krenek, Oliver Kaltz
Evolutionary Rescue (ER) occurs when populations, which have declined due to rapid environmental change, recover through genetic adaptation. The success of this process and the evolutionary trajectory of the population strongly depend on the rate of environmental change. Here we investigated how different rates of temperature increase (from 23°C to 32°C) affect population persistence and evolutionary change in experimental microcosms of the protozoan Paramecium caudatum. Consistent with theory on ER, we found that those populations experiencing the slowest rate of temperature increase were the least likely to become extinct and tended to be the best adapted to the new temperature environment...
February 21, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28222200/understanding-tree-growth-responses-after-partial-cuttings-a-new-approach
#8
Miguel Montoro Girona, Sergio Rossi, Jean-Martin Lussier, Denis Walsh, Hubert Morin
Forest ecosystem management heads towards the use of partial cuttings. However, the wide variation in growth response of residual trees remains unexplained, preventing a suitable prediction of forest productivity. The aim of the study was to assess individual growth and identify the driving factors involved in the responses of residual trees. Six study blocks in even-aged black spruce [Picea mariana (Mill.) B.S.P.] stands of the eastern Canadian boreal forest were submitted to experimental shelterwood and seed-tree treatments...
2017: PloS One
https://www.readbyqxmd.com/read/28222191/elderly-fall-risk-prediction-using-static-posturography
#9
Jennifer Howcroft, Edward D Lemaire, Jonathan Kofman, William E McIlroy
Maintaining and controlling postural balance is important for activities of daily living, with poor postural balance being predictive of future falls. This study investigated eyes open and eyes closed standing posturography with elderly adults to identify differences and determine appropriate outcome measure cut-off scores for prospective faller, single-faller, multi-faller, and non-faller classifications. 100 older adults (75.5 ± 6.7 years) stood quietly with eyes open and then eyes closed while Wii Balance Board data were collected...
2017: PloS One
https://www.readbyqxmd.com/read/28222058/classifiers-for-accelerometer-measured-behaviors-in-older-women
#10
Dori Rosenberg, Suneeta Godbole, Katherine Ellis, Chongzhi DI, Andrea Lacroix, Loki Natarajan, Jacqueline Kerr
PURPOSE: Machine learning methods could better improve the detection of specific types of physical activities and sedentary behaviors from accelerometer data. No studies in older populations have developed and tested algorithms for walking and sedentary time in free-living daily life. Our goal was to rectify this gap by leveraging access to data from two studies in older women. METHODS: In study 1, algorithms were developed and tested in a sample of older women (N = 39, age range = 55-96 yr) in the field...
March 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28221923/matrix-specific-method-validation-of-an-automated-most-probable-number-system-for-use-in-measuring-bacteriological-quality-of-grade-a-milk-products
#11
Samantha Lindemann, Matthew Kmet, Ravinder Reddy, Steffen Uhlig
The U.S. Food and Drug Administration (FDA) oversees a long-standing cooperative federal and state milk sanitation program that uses the grade "A" Pasteurized Milk Ordinance standards to maintain the safety of grade "A" milk sold in the United States. The Pasteurized Milk Ordinance requires that grade "A" milk samples be tested using validated total aerobic bacterial and coliform count methods. The objective of this project was to conduct an interlaboratory method validation study to compare performance of a film plate method with an automated most-probable-number method for total aerobic bacterial and coliform counts, using statistical approaches from international data standards...
November 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28221803/effects-of-thickness-on-the-metal-insulator-transition-in-free-standing-vanadium-dioxide-nanocrystals
#12
Mustafa M Fadlelmula, Engin Can Sürmeli, Mehdi Ramezani, Talip Serkan Kasırga
Controlling solid state phase transitions via external stimuli offers rich physics along with possibilities of unparalleled applications in electronics and optics. The well-known metal-insulator transition (MIT) in vanadium dioxide (VO2) is one instance of such phase transitions emerging from strong electronic correlations. Inducing the MIT using electric field has been investigated extensively for the applications in electrical and ultrafast optical switching. However, as the Thomas-Fermi screening length is very short, for considerable alteration in the material's properties with electric field induced MIT, crystals below 10 nm are needed...
February 21, 2017: Nano Letters
https://www.readbyqxmd.com/read/28221668/effect-of-physical-activity-versus-health-education-on-physical-function-grip-strength-and-mobility
#13
Adam J Santanasto, Nancy W Glynn, Laura C Lovato, Steven N Blair, Roger A Fielding, Thomas M Gill, Jack M Guralnik, Fang-Chi Hsu, Abby C King, Elsa S Strotmeyer, Todd M Manini, Anthony P Marsh, Mary M McDermott, Bret H Goodpaster, Marco Pahor, Anne B Newman
BACKGROUND: Physical activity (PA) reduces the rate of mobility disability, compared with health education (HE), in at risk older adults. It is important to understand aspects of performance contributing to this benefit. OBJECTIVE: To evaluate intervention effects on tertiary physical performance outcomes. DESIGN: The Lifestyle Interventions and Independence for Elders (LIFE) was a multi-centered, single-blind randomized trial of older adults...
February 21, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28221360/why-copper-is-preferred-over-iron-for-oxygen-activation-and-reduction-in-haem-copper-oxidases
#14
Ambika Bhagi-Damodaran, Matthew A Michael, Qianhong Zhu, Julian Reed, Braddock A Sandoval, Evan N Mirts, Saumen Chakraborty, Pierre Moënne-Loccoz, Yong Zhang, Yi Lu
Haem-copper oxidase (HCO) catalyses the natural reduction of oxygen to water using a haem-copper centre. Despite decades of research on HCOs, the role of non-haem metal and the reason for nature's choice of copper over other metals such as iron remains unclear. Here, we use a biosynthetic model of HCO in myoglobin that selectively binds different non-haem metals to demonstrate 30-fold and 11-fold enhancements in the oxidase activity of Cu- and Fe-bound HCO mimics, respectively, as compared with Zn-bound mimics...
March 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28221153/ultra-mini-pnl-ump-material-indications-technique-advantages-and-results
#15
Janak D Desai
Stone disease has afflicted mankind since centuries; records from ancient civilisations of India and Egypt have shown stones in human bodies. The scientific mind of humans has always made smart endeavours to remove the kidney stones. From large instruments made like the beaks of different animals and birds in 600 BC (Indian civilisation) to extremely sophisticated and miniaturised endoscopic intruments of today the human race has travelled a long way. The theme has always been to remove the stones with minimal morbidity and mortality and with minimum pain to the patient...
January 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28221020/a-scalable-approach-to-construct-free-standing-and-flexible-carbon-networks-for-lithium-sulfur-battery
#16
Mengliu Li, Wandi Wahyudi, Pushpendra Kumar, Feng-Yu Wu, Xiulin Yang, Henan Li, Lain-Jong Li, Jun Ming
Reconstructing carbon nanomaterials such as fullerene, carbon nanotubes (CNTs) and graphene to a hierarchical network structure is useful in exploring their applications. Herein, a sacrificial template method combined with the casting strategy is developed to prepare highly flexible and free-standing carbon film consisting of CNTs, graphene, or both. The scalable size, ultralight and binder-free characteristics, as well as the tunable process/property are promising for their large-scale applications, such as utilizing as interlayers in lithium-sulfur batteries...
February 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28220865/symmetry-breaking-of-counter-propagating-light-in-a-nonlinear-resonator
#17
Leonardo Del Bino, Jonathan M Silver, Sarah L Stebbings, Pascal Del'Haye
Spontaneous symmetry breaking is a concept of fundamental importance in many areas of physics, underpinning such diverse phenomena as ferromagnetism, superconductivity, superfluidity and the Higgs mechanism. Here we demonstrate nonreciprocity and spontaneous symmetry breaking between counter-propagating light in dielectric microresonators. The symmetry breaking corresponds to a resonance frequency splitting that allows only one of two counter-propagating (but otherwise identical) states of light to circulate in the resonator...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28220460/glycemic-control-in-a-real-life-setting-in-patients-with-type-2-diabetes-treated-with-ideglira-at-a-single-swiss-center
#18
Daniela Sofra
INTRODUCTION: The aim of the present study was to describe clinical outcomes in a real-world population of Swiss patients with long-standing, poorly controlled type 2 diabetes after switching to IDegLira [a combination of insulin degludec (IDeg) and liraglutide (Lira)]. METHODS: This was a prospective, open-label, single-center observational follow-up at the Cabinet Medical de Diabétologie, Lausanne, Switzerland, of 61 patients [HbA1c 9.2% (77 mmol/mol) and 56...
February 20, 2017: Diabetes Therapy: Research, Treatment and Education of Diabetes and related Disorders
https://www.readbyqxmd.com/read/28220077/noninvasive-assessment-of-the-effect-of-position-and-exercise-on-pulse-arrival-to-peripheral-vascular-beds-in-healthy-volunteers
#19
Yurie Obata, Qi J Ong, J T Magruder, Helen Grichkevitch, Dan E Berkowitz, Daniel Nyhan, Jochen Steppan, Viachaslau Barodka
Background: The effects of position and exercise on pulse wave distribution across a healthy, compliant arterial tree are not fully understood. We studied the effects of exercise and position on the pattern of pulse arrival times (PATs) in healthy volunteers. Moreover, we compared the pulse arrival time ratios to the respective distance ratios between different locations. Methods: Thirteen young healthy volunteers were studied, using an electrocardiogram and plethysmograph to simultaneously record pulse wave arrival at the ear lobe, index finger and big toe...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28220064/effect-of-experimentally-induced-trunk-muscular-tensions-on-the-sit-to-stand-task-performance-and-associated-postural-adjustments
#20
Alain Hamaoui, Caroline Alamini-Rodrigues
It has been shown that increased muscular activity along the trunk is likely to impair body balance, but there is little knowledge about its consequences on more dynamic tasks. The purpose of this study was to determine the effect of unilateral and bilateral increases of muscular tension along the trunk on the sit-to-stand task (STS) performance and associated anticipatory postural adjustments (APAs). Twelve healthy females (23 ± 3 years, 163 ± 0.06 cm, 56 ± 9 kg), free of any neurological or musculoskeletal disorders, performed six trials of the STS at maximum speed, in seven experimental conditions varying the muscular tension along each side of the trunk, using a specific bimanual compressive load paradigm...
2017: Frontiers in Human Neuroscience
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