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https://www.readbyqxmd.com/read/29141858/interleukin-1-blockade-in-recently-decompensated-systolic-heart-failure-results-from-redhart-recently-decompensated-heart-failure-anakinra-response-trial
#1
Benjamin W Van Tassell, Justin Canada, Salvatore Carbone, Cory Trankle, Leo Buckley, Claudia Oddi Erdle, Nayef A Abouzaki, Dave Dixon, Dinesh Kadariya, Sanah Christopher, Aaron Schatz, Jessica Regan, Michele Viscusi, Marco Del Buono, Ryan Melchior, Pranav Mankad, Juan Lu, Robin Sculthorpe, Giuseppe Biondi-Zoccai, Edward Lesnefsky, Ross Arena, Antonio Abbate
BACKGROUND: An enhanced inflammatory response predicts worse outcomes in heart failure (HF). We hypothesized that administration of IL-1 (interleukin-1) receptor antagonist (anakinra) could inhibit the inflammatory response and improve peak aerobic exercise capacity in patients with recently decompensated systolic HF. METHODS AND RESULTS: We randomly assigned 60 patients with reduced left ventricular ejection fraction (<50%) and elevated C-reactive protein levels (>2 mg/L), within 14 days of hospital discharge, to daily subcutaneous injections with anakinra 100 mg for 2 weeks, 12 weeks, or placebo...
November 2017: Circulation. Heart Failure
https://www.readbyqxmd.com/read/29126582/effect-of-body-mass-index-on-exercise-capacity-in-patients-with-hypertrophic-cardiomyopathy
#2
Carolyn M Larsen, Caroline A Ball, Virginia B Hebl, Kevin C Ong, Konstantinos C Siontis, Thomas P Olson, Michael J Ackerman, Steve R Ommen, Thomas G Allison, Jeffrey B Geske
The objective of this study was to evaluate the relation between body mass index (BMI), exercise capacity, and symptoms in patients with hypertrophic cardiomyopathy (HC) and to utilize results of cardiopulmonary exercise tests (CPX) and transthoracic echocardiograms to understand the mechanism(s) of reduced exercise capacity across body mass index groups. Over a 6-year period, 510 consecutive patients with HC seen at a tertiary referral center underwent (CPX) and a transthoracic echocardiogram. Increasing BMI was associated with decreased exercise capacity as assessed by peak VO2 (ml/kg/min)...
October 12, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29119418/low-level-laser-therapy-improves-the-vo2-kinetics-in-competitive-cyclists
#3
Fábio J Lanferdini, Renata L Krüger, Bruno M Baroni, Caetano Lazzari, Pedro Figueiredo, Alvaro Reischak-Oliveira, Marco A Vaz
Some evidence supports that low-level laser therapy (LLLT) reduces neuromuscular fatigue, so incrementing sports performance. A previous randomized controlled trial of our group showed increased exercise tolerance in male competitive cyclists treated with three different LLLT doses (3, 6, and 9 J/diode; or 135, 270, and 405 J/thigh) before time-to-exhaustion cycling tests. Now, the present study was designed to evaluate the effects of these LLLT doses on the VO2 kinetics of athletes during cycling tests. Twenty male competitive cyclists (29 years) participated in a crossover, randomized, double-blind, and placebo-controlled trial...
November 9, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29117929/a-fully-automated-web-based-program-improves-lifestyle-habits-and-hba1c-in-patients-with-type-2-diabetes-and-abdominal-obesity-randomized-trial-of-patient-e-coaching-nutritional-support-the-anode-study
#4
Boris Hansel, Philippe Giral, Laetitia Gambotti, Alexandre Lafourcade, Gilbert Peres, Claude Filipecki, Diana Kadouch, Agnes Hartemann, Jean-Michel Oppert, Eric Bruckert, Michel Marre, Arnaud Bruneel, Emilie Duchene, Ronan Roussel
BACKGROUND: The prevalence of abdominal obesity and type 2 diabetes mellitus (T2DM) is a public health challenge. New solutions need to be developed to help patients implement lifestyle changes. OBJECTIVE: The objective of the study was to evaluate a fully automated Web-based intervention designed to help users improve their dietary habits and increase their physical activity. METHODS: The Accompagnement Nutritionnel de l'Obésité et du Diabète par E-coaching (ANODE) study was a 16-week, 1:1 parallel-arm, open-label randomized clinical trial...
November 8, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/29115018/relationship-between-exercise-capacity-and-glucose-tolerance-in-cystic-fibrosis
#5
Karla Foster, Guixia Huang, Nanhua Zhang, Joseph Crisalli, Barbara Chini, Raouf Amin, Deborah Elder
BACKGROUND: Improved exercise capacity (EC) and normal glucose tolerance (NGT) are independently associated with favorable outcomes in CF, however, little information on this relationship exists in patients with CF. METHODS: Cardiopulmonary exercise tests, oral glucose tolerance tests (OGTT), and HbA1c values measured within a 12-month period were evaluated on 83 pediatric patients diagnosed with CF. Patients were categorized as having NGT, abnormal glucose tolerance (AGT), or CF-related diabetes (CFRD)...
November 8, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29114512/the-runsmart-training-program-effect-on-oxygen-consumption-and-lower-extremity-biomechanics-during-running
#6
Jennifer Bogulski, Steven Gonser, Doug Bush, Rachel Bugner, Lindsey Clark, Lisa Farrell, Kristen Swanson, Michael David Ross
As recreational running continues to gain popularity, more individuals are seeking ways to improve running performance. RunSmart is a running intervention program designed to enhance a runner's form. In addition to correcting flaws in a runner's form, RunSmart offers the opportunity for runners to continue a regular regimen while slowly integrating changes in form. The purpose of this case series was twofold: to determine if the RunSmart program coincides with improvements in oxygen consumption (VO2), a variable often associated with better running performance times, and to evaluate the RunSmart program in regard to enhancing gait biomechanics...
August 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29111629/effects-of-muay-thai-training-frequency-on-body-composition-and-physical-fitness-in-healthy-untrained-women
#7
Jeniffer A de S Rapkiewicz, João P Nunes, Jerry L Mayhew, Alex Silva Ribeiro, Hellen C Garcez Nabuco, Maria T Fávero, Emerson Franchini, Matheus Amarante do Nascimento
BACKGROUND: The purpose of the study was to compare the effects of different frequencies of Muay Thai training on body composition, and physical fitness in healthy untrained women. METHODS: Twenty women were randomly assigned to one of two training groups: G2X (n = 9) performed Muay Thai twice a week, while G3X (n = 11) performed the same program three times a week, both for 13 weeks. Anthropometric dimensions, fat-free mass, fat mass, resting metabolic rate, VO2 max, upper-body and abdominal muscle endurance, explosive leg power, agility, flexibility, and dietary intake were measured at pre and post-training...
November 7, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29098615/the-benefits-of-exercise-training-on-aerobic-capacity-in-patients-with-heart-failure-and-preserved-ejection-fraction
#8
Danilo Marcelo Leite do Prado, Enéas Antônio Rocco
Heart failure with preserved ejection fraction (HFpEF) is defined as an inability of the ventricles to optimally accept blood from atria with blunted end- diastolic volume response by limiting the stroke volume and cardiac output. The HEpEF prevalence is higher in elderly and women and may be associated to hypertension, diabetes mellitus and atrial fibrillation. Severe exercise intolerance, manifested by dyspnea and fatigue during physical effort is the important chronic symptom in HFpEF patients, in which is the major determinant of their reduced quality of life...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29096114/surface-engineering-on-continuous-vo2-thin-films-to-improve-thermochromic-properties-top-down-acid-etching-and-bottom-up-self-patterning
#9
Ning Wang, Yew Keat Peh, Shlomo Magdassi, Yi Long
Surface engineering is an effective method to improve the thermochromic performance of VO2. In this paper, an acid-etching top down method was proposed to tailor the VO2 surface morphology from the continuous dense-packed surface to patterned structure, which exhibited the enhanced integrated visible transmittance (Tlum) and the enlarged solar modulating abilities (ΔTsol). Moreover, a self-patterning approach was also illustrated to improve the thermochromic properties. The proposed surface engineering methods represent a facile and cost-effective approach for enhancing thermochromic properties that could promote the application of VO2 thin films in smart windows...
October 30, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29094919/dual-band-modulation-of-visible-and-near-infrared-light-transmittance-in-an-all-solution-processed-hybrid-micro-nano-composite-film
#10
Xiao Liang, Mei Chen, Shumeng Guo, Lanying Zhang, Fasheng Li, Huai Yang
Smart windows with controllable visible and near-infrared light transmittance can significantly improve the building's energy efficiency and inhabitant comfort. However, most of the current smart window technology cannot achieve the target of ideal solar control. Herein, we present a novel all-solution-processed hybrid micronano composite smart material that have four optical states to separately modulate the visible and NIR light transmittance through voltage and temperature, respectively. This dual-band optical modulation was achieved by constructing a phase-separated polymer framework, which contains the microsized liquid crystals domains with a negative dielectric constant and tungsten-doped vanadium dioxide (W-VO2) nanocrystals (NCs)...
November 10, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29089342/prognostic-value-of-cardiopulmonary-exercise-testing-in-heart-failure-with-reduced-midrange-and-preserved-ejection-fraction
#11
Wilson Nadruz, Erin West, Morten Sengeløv, Mário Santos, John D Groarke, Daniel E Forman, Brian Claggett, Hicham Skali, Amil M Shah
BACKGROUND: This study aimed to compare the independent and incremental prognostic value of peak oxygen consumption (VO2) and minute ventilation/carbon dioxide production (VE/VCO2) in heart failure (HF) with preserved (HFpEF), midrange (HFmEF), and reduced (HFrEF) ejection fraction (LVEF). METHODS AND RESULTS: In 195 HFpEF (LVEF ≥50%), 144 HFmEF (LVEF 40-49%), and 630 HFrEF (LVEF <40%) patients, we assessed the association of cardiopulmonary exercise testing variables with the composite outcome of death, left ventricular assist device implantation, or heart transplantation (256 events; median follow-up of 4...
October 31, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29062272/obesity-increases-mitogen-activated-protein-kinase-phosphatase-3-levels-in-the-hypothalamus-of-mice
#12
Bárbara de A Rodrigues, Vitor R Muñoz, Gabriel K Kuga, Rafael C Gaspar, Susana C B R Nakandakari, Barbara M Crisol, José D Botezelli, Luciana S S Pauli, Adelino S R da Silva, Leandro P de Moura, Dennys E Cintra, Eduardo R Ropelle, José R Pauli
Mitogen-activated Protein Kinase Phosphatase 3 (MKP-3) has been involved in the negative regulation of insulin signaling. The absence of MKP-3 is also associated with reduced adiposity, increased energy expenditure and improved insulin sensitivity. The MKP-3 is known as the main Erk1/2 phosphatase and FoxO1 activator, which has repercussions on the gluconeogenesis pathway and hyperglycemia in obese mice. Recently, we showed that MKP-3 overexpression decreases FoxO1 phosphorylation in the hypothalamus of lean mice...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29050719/how-is-pulmonary-function-and-exercise-tolerance-affected-in-patients-with-ais-who-have-undergone-spinal-fusion
#13
Kelly A Jeans, John F Lovejoy, Lori A Karol, Anna M McClung
STUDY DESIGN: Prospectively enrolled AIS patients who underwent spinal fusion, with 2 year follow-up. OBJECTIVES: To evaluate the cardiovascular fitness and activity level in patients with AIS pre- and post-spinal fusion and to determine if initial curve magnitude or pulmonary function is predictive of exercise capacity. SUMMARY OF BACKGROUND DATA: Researchers have tried to link pulmonary function testing (PFT) to exercise capacity; the results are mixed...
November 2017: Spine Deformity
https://www.readbyqxmd.com/read/29045277/determinants-of-improvement-in-cardiopulmonary-exercise-testing-after-left-ventricular-assist-device-implantation
#14
Andrew N Rosenbaum, Shannon M Dunlay, Naveen L Pereira, Thomas G Allison, Simon Maltais, John M Stulak, Lyle D Joyce, Sudhir S Kushwaha
Although improvement in cardiac output and hemodynamic parameters is routinely demonstrated in patients implanted with continuous-flow left ventricular assist devices (CF-LVADs), improvement in exercise capacity is inconsistently seen. Our purpose was to determine whether native cardiac factors, LVAD factors, or comorbid factors were associated with lack of improvement. Review of all patients undergoing preimplant cardiopulmonary exercise testing (CPET) and CPET on LVAD therapy at one institution was performed between 2007 and 2014 (n = 49)...
October 18, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29038285/metabolic-effects-of-diet-and-exercise-in-patients-with-moderate-to-severe-ckd-a-randomized-clinical-trial
#15
T Alp Ikizler, Cassianne Robinson-Cohen, Charles Ellis, Samuel A E Headley, Katherine Tuttle, Richard J Wood, Elizabeth Elspeth Evans, Charles M Milch, Kelsey Anne Moody, Michael Germain, Chutatip Limkunakul, Aihua Bian, Thomas G Stewart, Jonathan Himmelfarb
CKD is steadily increasing along with obesity worldwide. Furthermore, obesity is a proinflammatory risk factor for progression of CKD and cardiovascular disease. We tested the hypothesis that implementation of caloric restriction and aerobic exercise is feasible and can improve the proinflammatory metabolic milieu in patients with moderate to severe CKD through a pilot, randomized, 2×2 factorial design trial. Of 122 participants consented, 111 were randomized to receive caloric restriction and aerobic exercise, caloric restriction alone, aerobic exercise alone, or usual care...
October 16, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29019293/evolution-of-the-concept-of-oxygen-transport-in-the-critically-ill-with-a-focus-on-children-after-cardiopulmonary-bypass
#16
Jia Li
The concept of oxygen transport, defined as the relation between oxygen consumption (VO2) and delivery (DO2), is of fundamental importance in critically ill patients. The past 200 years have witnessed a stepwise progressive improvement in the understanding of pathophysiological disturbances in the balance of DO2 and VO2 in critically ill patients including those after cardiopulmonary bypass surgery. Intermittent spectacular technological achievements have accelerated the rate of progress. Therapeutic advances have been particularly impressive during the recent decades...
October 11, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/29018361/new-methods-for-processing-and-quantifying-vo2-kinetics-to-steady-state-vo2-onset-kinetics
#17
Craig R McNulty, Robert A Robergs
Current methods of oxygen uptake (VO2) kinetics data handling may be too simplistic for the complex physiology involved in the underlying physiological processes. Therefore, the aim of this study was to quantify the VO2 kinetics to steady state across the full range of sub-ventilatory threshold work rates, with a particular focus on the VO2 onset kinetics. Ten healthy, moderately trained males participated in five bouts of cycling. Each bout involved 10 min at a percentage of the subject's ventilation threshold (30, 45, 60, 75, 90%) from unloaded cycling...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28993402/exercise-intolerance-in-hfpef-diagnosing-and-ranking-its-causes-using-personalized-o2-pathway-analysis
#18
Nicholas E Houstis, Aaron S Eisman, Paul P Pappagianopoulos, Luke Wooster, Cole S Bailey, Peter D Wagner, Gregory D Lewis
Background -Heart failure with preserved ejection fraction (HFpEF) is a common syndrome with a pressing shortage of therapies. Exercise intolerance is a cardinal symptom of HFpEF, yet its pathophysiology remains uncertain. Methods -We investigated the mechanism of exercise intolerance in each of 134 patients referred for cardiopulmonary exercise testing (CPET): 79 with HFpEF and 55 controls. We performed CPET with invasive monitoring to measure hemodynamics, blood gases, and gas exchange during exercise. We used these measurements to quantify 6 steps of oxygen transport and utilization (the "O2 pathway") in each HFpEF patient, identifying the defective steps that impair each one's exercise capacity (peak VO2)...
October 9, 2017: Circulation
https://www.readbyqxmd.com/read/28983089/broadband-modulation-of-terahertz-waves-through-electrically-driven-hybrid-bowtie-antenna-vo2-devices
#19
Chunrui Han, Edward P J Parrott, Georges Humbert, Aurelian Crunteanu, Emma Pickwell-MacPherson
Broadband modulation of terahertz (THz) light is experimentally realized through the electrically driven metal-insulator phase transition of vanadium dioxide (VO2) in hybrid metal antenna-VO2 devices. The devices consist of VO2 active layers and bowtie antenna arrays, such that the electrically driven phase transition can be realized by applying an external voltage between adjacent metal wires extended to a large area array. The modulation depth of the terahertz light can be initially enhanced by the metal wires on top of VO2 and then improved through the addition of specific bowties in between the wires...
October 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28982945/exercise-training-improves-blood-flow-to-contracting-skeletal-muscle-of-older-men-via-enhanced-cgmp-signaling
#20
Peter Piil, Tue Smith Jørgensen, Jon Egelund, Rasmus Damsgaard, Lasse Gliemann, Ylva Hellsten, Michael Nyberg
Physical activity has the potential to offset age-related impairments in the regulation of blood flow and O2 delivery to the exercising muscles; however, the mechanisms underlying this effect of physical activity remain poorly understood. The present study examined the role of cGMP in training-induced adaptations in the regulation of skeletal muscle blood flow and oxidative metabolism during exercise in aging humans. We measured leg hemodynamics and oxidative metabolism during exercise engaging the knee-extensor muscles in young (n=15, 25 ± 1 years) and older (n=15, 72 ± 1 years) subjects before and after a period of aerobic high-intensity exercise training...
October 5, 2017: Journal of Applied Physiology
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