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https://www.readbyqxmd.com/read/27930685/exercise-training-prevents-cardiovascular-derangements-induced-by-fructose-overload-in-developing-rats
#1
Daniela Farah, Jonas Nunes, Michelle Sartori, Danielle da Silva Dias, Raquel Sirvente, Maikon B Silva, Patrícia Fiorino, Mariana Morris, Susana Llesuy, Vera Farah, Maria-Cláudia Irigoyen, Kátia De Angelis
The risks of chronic diseases associated with the increasing consumption of fructose-laden foods are amplified by the lack of regular physical activity and have become a serious public health issue worldwide. Moreover, childhood eating habits are strongly related to metabolic syndrome in adults. Thus, we aimed to investigate the preventive role of exercise training undertaken concurrently with a high fructose diet on cardiac function, hemodynamics, cardiovascular autonomic modulation and oxidative stress in male rats after weaning...
2016: PloS One
https://www.readbyqxmd.com/read/27918079/high-intensity-treadmill-running-impairs-cognitive-behavior-and-hippocampal-synaptic-plasticity-of-rats-via-activation-of-inflammatory-response
#2
Li-Na Sun, Xiao-Long Li, Fei Wang, Jun Zhang, Dan-Dan Wang, Li Yuan, Mei-Na Wu, Zhao-Jun Wang, Jin-Shun Qi
Although appropriate exercise is beneficial for enhancing brain functions, high-intensity exercise (HIE)-induced cognitive dysfunction is causing more and more concerns nowadays. In the present study, we observed the effects of high-intensity treadmill running on the spatial learning of the adult Sprague Dawley male rats in Y-maze (n = 16 per group), and investigated its possible electrophysiological and molecular mechanisms by examining in vivo hippocampal long-term potentiation (LTP), central inflammatory responses, and JNK/p38/ERK signal pathway...
December 5, 2016: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27915207/fixed-distance-walk-tests-at-comfortable-and-fast-speed-potential-tools-for-the-functional-assessment-of-coronary-patients
#3
Marie-Doriane Morard, Delphine Besson, Davy Laroche, Alexandre Naaïm, Vincent Gremeaux, Jean-Marie Casillas
OBJECTIVES: There is ambiguity concerning the walk tests available for functional assessment of coronary patients, particularly for the walking speed. This study explores the psychometric properties of two walking tests, based on fixed-distance tests, at comfortable and fast velocity, in stabilized patients at the end of a cardiac rehabilitation program. METHODS: At a three-day interval 58 coronary patients (mean age of 64.85±6.03 years, 50 men) performed three walk tests, the first two at a comfortable speed in a random order (6-minute walk test - 6MWT - and 400-metre comfortable walk test - 400mCWT) and the third at a brisk speed (200-metre fast walk test - 200mFWT)...
November 30, 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27913834/key-role-of-pacing-site-as-determinant-factor-of-exercise-testing-performance-in-pediatric-patients-with-chronic-ventricular-pacing
#4
Michel Cabrera Ortega, Hiram Tápanes Duamy, Dunia B Benítez Ramos
Chronic right ventricular (RV) apical pacing has been associated with deterioration of functional capacity and chronotropic incompetence during exercise testing in children. The effects of alternative pacing site on exercise performance in pediatric population remain unknown. We evaluated the influence of ventricular pacing site on exercise capacity in pediatric patients with complete congenital atrioventricular block requiring permanent pacemaker therapy. Sixty-four children paced from RV apex (n = 26), RV midseptum (n = 15) and left ventricular (LV) apex (n = 23) were studied cross-sectionally...
December 2, 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/27909228/divergent-outcomes-of-fructose-consumption-on-exercise-capacity-of-rats-friend-or-foe
#5
Angela Sun, An Huang, Elizabeth Kertowidjojo, Su Song, Thomas H Hintze, Dong Sun
To test the hypothesis that high fructose (HF) consumption divergently affects exercise capability, as a function of feeding duration, rats were fed a normal (as control) or a normal caloric diet with HF for 3, 6, 10 and 30 days respectively, and run on a treadmill. Results show that running distance and work were significantly increased, associated with greater exercise oxygen consumption in rats fed HF for 3 (HF-3D) and 6 days, but were decreased in rats fed HF for 30 days (HF-30D) compared to their respective control rats...
December 1, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27882731/reproducibility-of-corrected-qt-interval-in-pediatric-genotyped-long-qt-syndrome
#6
Yoshiharu Ogawa, Toshikatsu Tanaka, Sachiko Kido
Reproducibility of corrected QT interval (QTc), especially QTc after exercise, has not been thoroughly investigated. We reviewed charts of pediatric patients who underwent treadmill-exercise stress testing without medication multiple times within 1 year. In patients with long-QT syndrome (LQTS; n = 22), the discrepancy in QTc between two treadmill exercise stress tests using Fridericia's formula was 14 ± 12 ms at rest, 13 ± 12 ms 4 min after exercise, with a maximum of 14 ± 12 ms after exercise. There was no statistically significant difference in QTc between the two tests...
November 2016: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/27857956/exercise-in-personal-protective-equipment-in-a-hot-humid-environment-does-not-affect-risk-propensity
#7
Zachary J Schlader, Jennifer L Temple, David Hostler
We tested the hypothesis that heat stress created by light exertion in encapsulating personal protective equipment (PPE) in a hot, humid environment increases risk propensity. Ten healthy subjects (29 ± 7 y) completed 2 trials presented in a counter-balanced manner. Subjects donned encapsulating PPE, and in one trial they wore a tube-lined shirt underneath that was perfused with 5°C water. Subjects completed 2 15 min bouts of walking exercise on a treadmill at ˜50% maximal heart rate in a 32°C, 81% RH environment...
April 2016: Temperature: Multidisciplinary Biomedical Journal
https://www.readbyqxmd.com/read/27832685/treadmill-exercise-induced-e-e-elevation-as-a-predictor-of-cardiovascular-event-in-end-stage-renal-disease-on-peritoneal-dialysis
#8
Jong Ho Shin, Ki-Woon Kang, Jung Ho Kim, Jung Yeon Chin, Nae Yu Kim, Sang Hyun Park, Won Ho Kim, Yu Jeong Choi, Kyung Tae Jung
Background/Aims: Diastolic dysfunction is associated with cardiovascular (CV) events in end-stage renal disease (ESRD) on continuous ambulatory peritoneal dialysis (CAPD). However, conventional measurement of LA volume and E/e' using Doppler echocardiography has been limited to predict CV events in patients with ESRD on CAPD. Methods: From September 2007 to September 2008, 30 consecutive patients with exertional dyspnea in ESRD on CAPD and normal systolic function was prospectively enrolled and underwent laboratory testing, coronary angiography, and treadmill exercise stress echocardiography (TESE)...
November 11, 2016: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/27826713/trend-of-endurance-level-among-healthy-inner-city-children-and-adolescents-over-three-decades
#9
Raysa Morales-Demori, Omar Jamil, Maria Serratto
The aim of this study was to understand how endurance time, a proxy for physical fitness, has changed in healthy inner-city children and adolescents in the past three decades. This was a retrospective cross-sectional study. This study used exercise stress test in a laboratory of an inner-city teaching hospital. We reviewed all consecutive healthy children and adolescents who underwent an exercise Bruce protocol treadmill test from 1983 to 2010. The study population was divided into five groups of 5-year intervals based on the year of testing...
November 8, 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/27824693/aerobic-exercise-training-improves-orthostatic-tolerance-in-aging-humans
#10
Diqun Xu, Hong Wang, Shande Chen, Sarah Ross, Howe Liu, Albert Olivencia-Yurvati, Peter B Raven, Xiangrong Shi
PURPOSE: This study was designed to test the hypothesis that aerobic exercise training of the elderly will increase aerobic fitness without compromising orthostatic tolerance (OT). METHODS: Eight healthy sedentary volunteers (67.0±1.7 years old, 4 women) participated in 1-year of endurance exercise training (stationary bicycle and/or treadmill) program at the individuals' 65%-75% of peak heart rate (HRpeak). Peak O2 uptake (VO2peak) and HRpeak were determined by a maximal exercise stress test using a bicycle ergometer...
November 7, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27798055/exercise-induced-syncope-in-a-22-year-old-man
#11
Colin Yeo, Vern Hsen Tan, Kelvin Ck Wong
A 22-year-old man was referred to us for syncope during a game of Captain's ball. There was no prodrome. His friends did not notice any ictal movements. He was otherwise well prior to passing out. He was not taking any medications or supplements. He was not usually physically active, but was otherwise well with no significant medical history. This is his first episode of syncope. There was no history of cardiac arrest or seizures. There is no family history of premature sudden cardiac death.Physical examination was normal...
October 25, 2016: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/27774505/an-evaluation-of-the-significance-of-work-related-influence-factors-on-fitness-and-the-development-of-medical-and-orthopaedic-conditions-in-military-executives
#12
Christoph Schulze, Michael Becker, Susanne Finze, Christoph Holtherm, Jens Hinder, Andreas Lison
Occupational health promotion is an effective tool to improve the state of health of employees. As part of occupational health promotion in the German Bundeswehr, top-ranking military executives are offered a medical examination and training programme. Health-related data is collected as a basis for training and lifestyle counselling. This data was subjected to a retrospective evaluation in order to identify occupational risk factors and their correlation with cardiovascular resilience, trunk strength, and the development of orthopaedic and internal disorders...
2016: TheScientificWorldJournal
https://www.readbyqxmd.com/read/27757187/diagnostic-value-of-electrocardiogram-in-predicting-exaggerated-blood-pressure-response-to-exercise-stress-testing
#13
Ali Eshraghi, Reyhaneh Takalloo Ebdali, Seyed Sajed Sajjadi, Reza Golnezhad
INTRODUCTION: It is believed that an exaggerated blood pressure response (EBPR) to exercise stress test is associated with a higher risk of cardiovascular events. It is also assumed that QT dispersion (QT-d), which was originally proposed to measure the spatial dispersion of ventricular recovery times, may have a relationship to cardiovascular events. The objective of this study was to examine the difference of changes in QT-d, Maxi-QT, Mini-QT, and QT-c (corrected QT interval) of the electrocardiogram in two groups of patients with exaggerated blood pressure responses (EBPR group) and normal responses (control group) to exercise testing...
August 2016: Electronic Physician
https://www.readbyqxmd.com/read/27751974/assessment-of-heart-rate-recovery-with-gated-myocardial-perfusion-scintigraphy-outcome-in-patients-with-coronary-artery-disease-a-retrospective-study-and-institutional-experience
#14
Yusuf Ziya Tan, Semra Özdemir, Burak Altun, Fatmanur Çelik
OBJECTIVE: This study aimed to investigate the effects of assessment with myocardial perfusion scintigraphy (MPS) and heart rate recovery (HRrec) measurements in combination to evaluate the current status of patients with a diagnosis or suspicion of coronary artery disease (CAD). METHODS: A total of 350 patients were included in the study. CAD group consisted of 200 patients with stable angina pectoris and a known history of CAD, while the control group consisted of 150 patients with suspicious stress test who had no history of known CAD...
October 5, 2016: Molecular Imaging and Radionuclide Therapy
https://www.readbyqxmd.com/read/27716653/erythrocyte-nitric-oxide-availability-and%C3%A2-oxidative-stress-following-exercise
#15
Daniel Jose Matos Medeiros-Lima, Antonio Claudio Mendes-Ribeiro, Tatiana Marlowe Cunha Brunini, Marcela Anjos Martins, Wanda Vianna Mury, Raul Almeira Freire, Walace David Monteiro, Paulo Tarso Veras Farinatti, Cristiane Matsuura
Growing evidence has shown that acute exercise impairs erythrocyte membrane structure and function as a consequence of increased physical and chemical stress. Erythrocyte-synthesized nitric oxide (NO) is known to modulate membrane fluidity, and its bioavailability depends on the balance between its production and scavenging by reactive oxygen species. Here, we investigated whether a maximal exercise test could affect erythrocyte NO bioavailability and oxidative stress. Twelve men (26±4 years old, V̇O2peak 44...
October 3, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27625070/effects-of-exercise-on-alterations-in-redox-homeostasis-in-elite-male-and-female-endurance-athletes-using-a-clinical-point-of-care-test
#16
Nathan A Lewis, Colin Towey, Georgie Bruinvels, Glyn Howatson, Charles R Pedlar
Exercise causes alterations in redox homeostasis (ARH). Measuring ARH in elite athletes may aid in the identification of training tolerance, fatigued states, and underperformance. To the best of our knowledge, no studies have examined ARH in elite male and female distance runners at sea level. The monitoring of ARH in athletes is hindered by a lack of reliable and repeatable in-the-field testing tools and by the rapid turnaround of results. We examined the effects of various exercise intensities on ARH in healthy (non-over-reached) elite male and female endurance athletes using clinical point-of-care (POC) redox tests, referred to as the free oxygen radical test (FORT) (pro-oxidant) and the free oxygen radical defence (FORD) (antioxidant)...
October 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/27548253/peak-cardiorespiratory-responses-of-patients-with-subacute-stroke-during-land-and-aquatic-treadmill-exercise
#17
Yong Ki Lee, Bo Ryun Kim, Eun Young Han
OBJECTIVE: The aim of this work was to investigate the cardiorespiratory responses of patients with subacute stroke to exercise stress tests with aquatic and land treadmills. DESIGN: Twenty-one consecutive patients who presented with first-ever subacute stroke in 2013-2015. All subjects underwent symptom-limited incremental exercise testing with aquatic and land treadmills. Land treadmill speed started at 1.5 km/h and increased 0.5 km/h every 1 to 2 minutes until maximal tolerable speed was achieved...
August 19, 2016: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/27543308/diagnostic-performance-of-treadmill-exercise-cardiac-magnetic-resonance-the-prospective-multicenter-exercise-cmr-s-accuracy-for-cardiovascular-stress-testing-exact-trial
#18
Subha V Raman, Jennifer A Dickerson, Wojciech Mazur, Timothy C Wong, Erik B Schelbert, James K Min, Debbie Scandling, Cheryl Bartone, Jason T Craft, Paaladinesh Thavendiranathan, Ernest L Mazzaferri, John W Arnold, Robert Gilkeson, Orlando P Simonetti
BACKGROUND: Stress cardiac magnetic resonance (CMR) has typically involved pharmacologic agents. Treadmill CMR has shown utility in single-center studies but has not undergone multicenter evaluation. METHODS AND RESULTS: Patients referred for treadmill stress nuclear imaging (SPECT) were prospectively enrolled across 4 centers. After rest (99m)Tc SPECT, patients underwent resting cine CMR. In-room stress was then performed using an MR-compatible treadmill with continuous 12-lead electrocardiogram monitoring...
August 19, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27542418/evidence-based-recommendations-for-the-evaluation-of-palpitations-in-the-primary-care-setting
#19
REVIEW
Joel Wilken
Palpitations are a symptom of many cardiac and noncardiac conditions. The patient's history, physical examination, appropriately directed laboratory tests, and basic electrocardiogram are helpful in evaluating palpitations and may be essential to finding a diagnosis. There are many outpatient options for the evaluation of palpitations caused by a presumed cardiogenic cause. These evaluation tools include Holter monitor, event monitor, transtelephonic electrocardiographic monitor, treadmill exercise stress test, echocardiography, and electrophysiologic studies...
September 2016: Medical Clinics of North America
https://www.readbyqxmd.com/read/27528626/novel-ketone-diet-enhances-physical-and-cognitive-performance
#20
Andrew J Murray, Nicholas S Knight, Mark A Cole, Lowri E Cochlin, Emma Carter, Kirill Tchabanenko, Tica Pichulik, Melanie K Gulston, Helen J Atherton, Marie A Schroeder, Robert M J Deacon, Yoshihiro Kashiwaya, M Todd King, Robert Pawlosky, J Nicholas P Rawlins, Damian J Tyler, Julian L Griffin, Jeremy Robertson, Richard L Veech, Kieran Clarke
Ketone bodies are the most energy-efficient fuel and yield more ATP per mole of substrate than pyruvate and increase the free energy released from ATP hydrolysis. Elevation of circulating ketones via high-fat, low-carbohydrate diets has been used for the treatment of drug-refractory epilepsy and for neurodegenerative diseases, such as Parkinson's disease. Ketones may also be beneficial for muscle and brain in times of stress, such as endurance exercise. The challenge has been to raise circulating ketone levels by using a palatable diet without altering lipid levels...
December 2016: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
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