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Exercise stress testing

Shizuka Kaneko, Youhei Ueda, Yumiko Tahara
BACKGROUND: Enhanced Recovery After Surgery (ERAS) protocols are multimodal perioperative care pathways designed to achieve early recovery after surgical procedures by maintaining preoperative organ function and reducing profound stress responses following surgery [Wilmore and Kehlet: BMJ 2001; 322(7284): 473-6]. Glucagon-like peptide-1 receptor agonists (GLP-1RAgs), such as liraglutide, have recently been widely used as antidiabetic agents in patients with type 2 diabetes (T2D) because they maintain blood glucose at an ideal level throughout the day, including during postprandial periods, thereby improving hypoglycemia and body weight more than insulin therapies...
December 11, 2018: European Surgical Research. Europäische Chirurgische Forschung. Recherches Chirurgicales Européennes
Susan Vrijkotte, Bart Roelands, Nathalie Pattyn, Romain Meeusen
Introduction: Soldiers are exposed to extreme training regimens in order to optimally prepare for real battle. High attrition rates are a known issue during training courses, especially for elite troops. An underlying factor might be the disbalance between stress/strain and recovery. The aim of this review is to give insight in the current knowledge about functional overreaching (FOR), non-FOR (NFOR), and the overtraining syndrome (OTS) in the military. Materials and Methods: A systematic literature review was conducted...
December 11, 2018: Military Medicine
Gianni Belcaro, Shu Hu, Jeff Strong, Beatrice Feragalli, Giulia Vinciguerra, Marisa Cacchio, Maria Rosaria Cesarone
BACKGROUND: This registry study evaluated the effects of G3 Sports supplement drink (G3) on performance and endurance in triathlon in amateur athletes in a period of 2 weeks of training. G3 is composed of a proprietary fruit juice blend high in carotenoid compounds as well as 100 mg of standardized French oak (Quercus robur) wood extract, Robuvit®, per 50 mL bottle. The antioxidant and anti-inflammatory actions of the compounds in G3 may improve training efficiency (decreasing post-triathlon muscular pain, cramps and improve recovery time) and decrease post-training plasma free radicals (PFR)...
December 2018: Minerva Medica
Rumit Singh Kakar, Hilary B Greenberger, Patrick O McKeon
CONTEXT: Anterior knee pain also known as patellofemoral pain syndrome (PFPS) is a frequently encountered musculoskeletal disorder that worsens with activity. The multifactorial etiology of PFPS alters lower extremity mechanics, increasing patellofemoral joint stresses during weight-bearing tasks. Kinesio (KT) and McConnell (MC) tapings are often incorporated into the treatment, but their efficacy is still unclear. OBJECTIVES: To test the efficacy of KT, MC and sham taping (ST) in improving knee mechanics and reducing pain during activity...
December 11, 2018: Journal of Sport Rehabilitation
Kirk B Roberson, Joseph F Signorile, Carlos Singer, Kevin A Jacobs, Moataz Eltoukhy, Nicolette Ruta, Nicole Mazzei, Andrew Buskard
The presence of postganglionic sympathetic denervation is well established in Parkinson's disease (PD). Denervation at cardiac and blood vessel sites may lead to abnormal cardiovascular and hemodynamic responses to exercise. The aim of the present investigation was to examine how heart rate (HR) and hemodynamics are affected by an exercise test in PD patients without orthostatic hypotension. Fourteen individuals with PD and sixteen age-matched healthy controls performed an exercise test on a cycle ergometer...
December 6, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
Mustafa Dogdus, Evrim Simsek, Cahide Soydas Cinar
BACKGROUND AND AIM: Stable angina pectoris is a common disease that may cause disability. Some noninvasive new methods can be useful for the detection of early-stage coronary artery disease. The relationship between coronary artery disease (CAD) severity and resting 3-dimensional-speckle tracking echocardiography (3D-STE) in stable angina pectoris patients was evaluated in this study. METHODS: One hundred and twenty consecutive patients between 18-80 years of age and without a history of CAD to whom elective coronary angiography was planned after positive stress test or myocardial perfusion scintigraphy were enrolled in the study...
December 4, 2018: Echocardiography
Karolina A Chodkowska, Anna Ciecierska, Kinga Majchrzak, Piotr Ostaszewski, Tomasz Sadkowski
Gamma-oryzanol (GO) is a popular supplement for performance horses, dogs, and humans. Previous studies indicated that GO supplementation decreases creatine kinase activity and lactate level after exercise and may affect oxidative stress in Thoroughbred horses. GO may change genes expression in equine satellite cells (ESC). The purpose of this study was to evaluate the effect of GO on miRNA, gene expression, oxidative stress, and cell damage and viability in differentiating ESC pretreated with hydrogen peroxide (H₂O₂)...
December 2, 2018: Nutrients
Narelle Eather, Nicholas Riley, Andrew Miller, Veronica Smith, Ashleigh Poole, Lisa Vincze, Philip J Morgan, David R Lubans
OBJECTIVES: The primary aim of this study was to evaluate the preliminary efficacy and feasibility of an 8-week high-intensity interval training program (Uni-HIIT) for young adult students in a university setting. DESIGN: Randomised controlled trial. METHOD: Uni-HIIT was conducted at the University of Newcastle, Australia (February-June, 2017). Participants were university students 18-25yrs (n=53; 20.38±1.88yrs) randomized into the Uni HIIT program (n=26) or wait-list control (n=27) condition...
November 24, 2018: Journal of Science and Medicine in Sport
John Elson, Steve Eckels
Quantifying the impact of clothing thermal and evaporation resistance is essential to providing representative boundary conditions for physiological modeling. In many models, sweat is assumed to drip off the skin surface to the environment and is not captured in clothing. In high metabolic rate and high temperature and humidity conditions the sweat produced by the body has the potential to saturate semipermeable clothing ensembles, changing the assumptions of the model. Workers, athletes and soldiers commonly wear encapsulating versions of such clothing to protect against environmental hazards...
December 2018: Journal of Thermal Biology
Michael W Schleh, Brent C Ruby, Charles L Dumke
Heat acclimation lowers physiological strain when exercising in the heat, and may be enhanced by promoting dehydration during acclimation. The purpose was to compare fluid intake during heat acclimation by promoting dehydration (DEH=0.5 mL kg-1 15 min-1 , ~2.4% dehydration per acclimation session) compared to euhydration (EUH=2.0 mL kg-1 15 min-1 , ~1.4% dehydration per acclimation session) following four heat acclimation bouts on thermal strain, and exercise performance. Thirteen males completed 90 min heat stress tests (HST) at 50% VO2max (40 °C, 30%RH) before and after three 90 min heat acclimation trials, involving consecutive bouts with 4-fold less fluid (DEH) or EUH...
December 2018: Journal of Thermal Biology
Mohammad Mazani, Ali Nemati, Mojtaba Amani, Kobra Haedari, Reza Alipanah Mogadam, Abbas Naghizadeh Baghi
OBJECTIVE: To evaluate the effect of probiotic yoghurt consumption on oxidative stress and inflammatory factors in young females after exhaustive exercise. METHODS: TThis study included 27 healthy participants with an age range of 18-25. For two weeks, 450 grams of probiotic yoghurt and 450 grams of ordinary yoghurt were given to the supplement and control groups, respectively. Fasting blood samples were taken at baseline and at the end of study. At the end of the intervention, the participants were given one exhaustive exercise and then fasting blood samples were taken to test for blood antioxidant enzymes, inflammatory markers, and oxidative markers...
December 2018: JPMA. the Journal of the Pakistan Medical Association
Eslam Samaha, Jamie Brown, Frank Brown, Sara C Martinez, Mitchell Scott, Allan S Jaffe, Victor G Davila-Roman, Peter Nagele
INTRODUCTION: Exercise (ESE) and dobutamine stress echocardiography (DSE) have high sensitivity and specificity to detect inducible myocardial ischemia in patients with significant coronary artery disease (CAD). High-sensitivity cardiac troponin (hs-cTn) assays detect troponin concentrations in the ng/L range. The aim of this study was to determine the kinetics of hs-cTnT in patients undergoing ESE and DSE and possible association of hs-cTnT with inducible myocardial ischemia. METHODS: In this prospective study adult patients undergoing ESE/DSE were enrolled...
November 28, 2018: Clinical Biochemistry
Justin McNair Canada, Antonio Abbate, Rebecca Collen, Hayley Billingsley, Leo Francis Buckley, Salvatore Carbone, Cory Ross Trankle, Michael Ola Idowu, Dinesh Kadariya, Benjamin Van Tassell, Arun Jayant Sanyal, Mohammad Shadab Siddiqui
The purpose of this study was to determine the relation between liver histology, exercise tolerance, and diastolic function in patients with nonalcoholic fatty liver disease (NAFLD). Myocardial remodeling and diastolic dysfunction have been associated with NAFLD. However, its physiological impact and relationship to the histological severity of NAFLD is not known. Cardiopulmonary exercise testing and stress echocardiography was performed in subjects with biopsy-confirmed NAFLD. Maximal aerobic exercise capacity (peak oxygen consumption [VO2 ]) was related to diastolic function (mitral annulus Doppler velocity e' and ratio of early diastolic filling pressure [E] to e' [E/e']) at rest and peak exercise...
November 6, 2018: American Journal of Cardiology
Joshua T Slysz, Jamie F Burr
Purpose: To identify the combined effect of increasing tissue level oxygen consumption and metabolite accumulation on the ergogenic efficacy of ischemic preconditioning (IPC) during both maximal aerobic and maximal anaerobic exercise. Methods: Twelve healthy males (22 ± 2 years, 179 ± 2 cm, 80 ± 10 kg, 48 ± 4 min-1 ) underwent four experimental conditions: (i) no IPC control, (ii) traditional IPC, (iii) IPC with EMS, and (iv) IPC with treadmill walking. IPC involved bilateral leg occlusion at 220 mmHg for 5 min, repeated three times, separated by 5 min of reperfusion...
2018: Frontiers in Physiology
N Kokras, I Sotiropoulos, D Besinis, E L Tzouveka, O F X Almeida, N Sousa, C Dalla
Environmental enrichment (EE), comprising positive physical (exercise) and cognitive stimuli, influences neuronal structure and usually improves brain function. The promise of EE as a preventative strategy against neuropsychiatric disease is especially high during early postnatal development when the brain is still amenable to reorganization. Despite the fact that male and female brains differ in terms of connectivity and function that may reflect early life experiences, knowledge of the neural substrates and mechanisms by which such changes arise remains limited...
November 26, 2018: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
Kiran K Mirza, Mette H Jung, Per E Sigvardsen, Klaus F Kofoed, Marie B Elming, Kasper Rossing, Finn Gustafsson
Using four-dimensional (4D) cardiac computed tomography (CCT) scans at rest and immediately after exercise, we examined the right heart chamber sizes and systolic function and its association with exercise capacity in left ventricular assist device (LVAD) recipients. Fifteen patients with HeartMate (HM) II or 3 underwent echocardiography and maximal cardiopulmonary exercise test. Subsequently, contrast-enhanced CCT scans were performed at rest and immediately after two minutes of supine 25 Watt ergometer bike exercise...
November 27, 2018: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
Jamshid Maddahi, Frank Bengel, Johannes Czernin, Paul Crane, Magnus Dahlbom, Heinrich Schelbert, Richard Sparks, Michael Phelps, Joel Lazewatsky
The objectives of this study were to evaluate radiation dosimetry, biodistribution, human safety, and tolerability of 18 F-labeled flurpiridaz (Flurpiridaz) in normal subjects undergoing rest and separate-day exercise or adenosine pharmacological stress PET imaging. METHODS: 12 normal subjects were injected with 58.5 to 121 MBq (1.58 to 3.27 mCi) of Flurpiridaz intravenously at rest on Day 1 and 57 to 171 MBq (1.54 to 4.61 mCi) during stress on Day 2. Sequential whole-body imaging was performed for 5 hours...
November 28, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
Mario Fernando Prieto Peres, Juliane Prieto Peres Mercante, Arão Belitardo de Oliveira
BACKGROUND: Primary headaches can be reduced by lifestyle changes, such as stress management and physical activity. However, access to programs focused on behavioral interventions is limited in underserved, poor communities. OBJECTIVES: We performed a randomized open-label clinical trial to test the therapeutic and behavioral effects of aerobic exercise, relaxation, or the combination of both, in individuals with primary headaches of a small, low-income community of the Brazilian Amazon...
November 28, 2018: Headache
Jacopo Colombo, Iryna Arendar, Ugo Pastorino, Daniela Codazzi
INTRODUCTION: Thoracic surgery can have serious side effects. Accurate preoperative evaluation to assess which patients with anatomically resectable disease are suitable candidates for surgery is mandatory. CASE DESCRIPTION: A 58-year-old man, scheduled for left pneumonectomy for lung cancer, passed all the preoperative examinations suggested by guidelines and underwent the surgery. Three days after pneumonectomy, he experienced hemorrhagic shock and subsequent acute respiratory distress syndrome...
November 28, 2018: Tumori
John James Wooller, Mike Rogerson, Jo Barton, Dominic Micklewright, Valerie Gladwell
This exploratory study enhances previous research into green exercise and addresses a gap in the research by exploring the contribution of individual and combined senses in the recovery of mood and stress after a psychological stressor, whilst rigorously controlling exercise intensity. The hypotheses were: (i) recovery of mood and stress from a state of psychological stress would be greater following simulated green exercise compared to rest, (ii) green exercise would facilitate better recovery than exercise alone, (iii) these effects would remain 10 min following intervention, and (iv) visual stimuli alone would enhance recovery from a state of psychological stress compared to sound...
2018: Frontiers in Psychology
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