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Treadmil exercise testing

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https://www.readbyqxmd.com/read/28803675/the-yale-fitness-intervention-trial-in-female-cancer-survivors-cardiovascular-and-physiological-outcomes
#1
M Tish Knobf, Sangchoon Jeon, Barbara Smith, Lyndsay Harris, Siobhan Thompson, Mitchel R Stacy, Karl Insogna, Albert J Sinusas
BACKGROUND: Induced premature menopause and cardio-toxic therapy increase cardiovascular disease risk in female cancer survivors. OBJECTIVE: To compare the effects of a 12 month aerobic-resistance fitness center intervention to home based physical activity on cardiovascular function and metabolic risk factors. METHODS: Subjects (N = 154) who had completed primary and/or adjuvant chemotherapy (past 3 years) were randomized to a fitness center intervention or a home based group...
August 10, 2017: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/28801819/treadmill-exercise-prevents-increase-of-neuroinflammation-markers-involved-in-the-dopaminergic-damage-of-the-6-ohda-parkinson-s-disease-model
#2
Caroline Cristiano Real, Priscila Crespo Garcia, Luiz R G Britto
Parkinson's disease (PD) involves loss of dopaminergic neurons in the substantia nigra (SN), which can be correlated to neuroinflammatory changes with the aging of the nervous system. On the other hand, exercise can reduce the deleterious effects promoted by age, but the mechanism involved is still unclear. This study investigated the preventive exercise-induced changes on neuroinflammatory processes in a rat model of PD induced by unilateral striatal injections of 6-hydroxydopamine (6-OHDA). Adult male Wistar rats were divided into two groups: (1) sedentary (SED) or (2) exercised (EX), animals that did treadmill exercise three times per week, every other day, for 4 weeks prior to 6-OHDA or saline injection...
August 11, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28801055/therapy-with-mesenchymal-stromal-cells-or-conditioned-medium-reverse-cardiac-alterations-in-a-high-fat-diet-induced-obesity-model
#3
P S Daltro, B C Barreto, P G Silva, P Chenaud Neto, P H F Sousa Filho, D Santana Neta, G B Carvalho, D N Silva, B D Paredes, A C de Alcantara, L A R Freitas, R D Couto, R R Santos, B S F Souza, M B P Soares, S G Macambira
BACKGROUND: Obesity is associated with numerous cardiac complications, including arrhythmias, cardiac fibrosis, remodeling and heart failure. Here we evaluated the therapeutic potential of mesenchymal stromal cells (MSCs) and their conditioned medium (CM) to treat cardiac complications in a mouse model of high-fat diet (HFD)-induced obesity. METHODS: After obesity induction and HFD withdrawal, obese mice were treated with MSCs, CM or vehicle. Cardiac function was assessed using electrocardiography, echocardiography and treadmill test...
August 8, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28800177/exercise-stress-test-reveals-ineligibility-for-subcutaneous-implantable-cardioverter-defibrillator-in-patients-with-brugada-syndrome
#4
Motomi Tachibana, Nobuhiro Nishii, Hiroshi Morita, Koji Nakagawa, Atsuyuki Watanabe, Kazufumi Nakamura, Hiroshi Ito
BACKGROUND: The eligibility of patients with Brugada syndrome (BrS) for implantation of a subcutaneous implantable cardioverter defibrillator (S-ICD) is not well known. This study aimed to clarify the eligibility of BrS patients for S-ICD using electrocardiography (ECG) at rest and during exercise testing. We also analyzed factors associated with ineligibility for S-ICD from standard 12-lead ECG at rest. METHODS: We enrolled 110 consecutive BrS patients who visited Okayama university hospital from December 2015 to December 2016...
August 11, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28794439/maternal-low-intensity-physical-exercise-prevents-obesity-in-offspring-rats-exposed-to-early-overnutrition
#5
Tatiane Aparecida Ribeiro, Laize Peron Tófolo, Isabela Peixoto Martins, Audrei Pavanello, Júlio Cezar de Oliveira, Kelly Valério Prates, Rosiane Aparecida Miranda, Claudinéia Conationi da Silva Franco, Rodrigo Mello Gomes, Flávio Andrade Francisco, Vander Silva Alves, Douglas Lopes de Almeida, Veridiana Mota Moreira, Kesia Palma-Rigo, Elaine Vieira, Gabriel Sergio Fabricio, Marcos Ricardo da Silva Rodrigues, Wilson Rinaldi, Ananda Malta, Paulo Cezar de Freitas Mathias
Low intensity exercise during pregnancy and lactation may create a protective effect against the development of obesity in offspring exposed to overnutrition in early life. To test these hypotheses, pregnant rats were randomly assigned into 2 groups: Sedentary and Exercised, low intensity, on a rodent treadmill at 30% VO2Max /30-minute/session/3x/week throughout pregnancy and the lactation. Male offspring were raised in small litters (SL, 3 pups/dam) and normal litters (NL, 9 pups/dam) as models of early overnutrition and normal feed, respectively...
August 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28792230/exercise-capacity-and-haemodynamic-response-among-12-327-individuals-with-cardio-metabolic-risk-factors-undergoing-treadmill-exercise
#6
Christina Chrysohoou, John Skoumas, Georgios Georgiopoulos, Catherine Liontou, Georgia Vogiatzi, Konstantinos Tsioufis, Stamatios Lerakis, Dimitrios Soulis, Christos Pitsavos, Dimitris Tousoulis
Aims Haemodynamic parameters during and after exercise test seem to have a role in predicting cardiovascular events. We sought to evaluate the potential different responses in exercise capacity, heart rate and blood pressure levels in relation to major cardiovascular disease risk factors, among individuals undergoing exercise tolerance testing. Methods and results Consecutive individuals ( N = 12,327), aged 55 ± 11.8 years, underwent exercise tolerance testing, using the Bruce protocol. Obese participants showed higher values of peak systolic and diastolic blood pressure ( p < 0...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28782653/a-maximal-incremental-effort-alters-tear-osmolarity-depending-on-the-fitness-level-in-military-helicopter-pilots
#7
Jesús Vera Vilchez, Raimundo Jimenez, Iker Madinabeitia, Nerijus Masiulis, David Cárdenas
PURPOSE: Fitness level modulates the physiological responses to exercise for a variety of indices. While intense bouts of exercise have been demonstrated to increase tear osmolarity (Tosm), it is not known if fitness level can affect the Tosm response to acute exercise. This study aims to compare the effect of a maximal incremental test on Tosm between trained and untrained military helicopter pilots. METHODS: Nineteen military helicopter pilots (ten trained and nine untrained) performed a maximal incremental test on a treadmill...
August 4, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28775067/running-training-experience-attenuates-disuse-atrophy-in-fast-twitch-skeletal-muscles-of-rats
#8
Keisuke Nakamura, Ikumi Ohsawa, Ryo Masuzawa, Ryotaro Konno, Atsuya Watanabe, Fuminori Kawano
Responsiveness to physiological stimuli, such as exercise and muscular inactivation, differs in individuals. However, the mechanisms responsible for these individual differences remain poorly understood. We tested whether a prior experience of exercise training affects the responses of skeletal muscles to unloading. Young rats were assigned to perform daily running training using a treadmill for 8 weeks. After an additional 8 weeks of normal habitation, the rats were hindlimb unloaded by tail suspension for 1 week...
August 3, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28770457/exercise-induced-polymorphic-ventricular-tachycardia-during-treadmill-stress-test
#9
Federico G De Puy, Ayman A Farag, Vineet Kumar
No abstract text is available yet for this article.
August 2, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28765826/validity-and-reliability-of-grade-scoring-in-the-diagnosis-of-exercise-induced-laryngeal-obstruction
#10
Emil Schwarz Walsted, James H Hull, Jeppe Hvedstrup, Robert Christiaan Maat, Vibeke Backer
The current gold-standard method for diagnosing exercise-induced laryngeal obstruction (EILO) is continuous laryngoscopy during exercise (CLE), with severity classified by a visual grade scoring system. We evaluated the precision of this approach, by evaluating test-retest reliability of CLE and both inter- and intra-rater variability. In this prospective case-control study, subjects completed four consecutive treadmill CLE tests under identical conditions. Laryngoscopic video recordings were anonymised and graded by three expert raters...
July 2017: ERJ Open Research
https://www.readbyqxmd.com/read/28761700/a-novel-treadmill-protocol-for-exercise-testing-in-children-the-british-columbia-children-s-hospital-protocol
#11
D Kathryn Duff, Astrid M De Souza, Derek G Human, James E Potts, Kevin C Harris
BACKGROUND: Exercise testing in children is widely recommended for a number of clinical and prescriptive reasons. Many institutions continue to use the Bruce protocol for treadmill testing; however, with its incremental changes in speed and grade, it has challenges for practical application in children. We have developed a novel institutional protocol (British Columbia Children's Hospital (BCCH)), which may have better utility in paediatric populations. AIM: To determine if our institutional protocol yields similar peak responses in minute ventilation (VE), oxygen consumption (VO2), carbon dioxide production (VCO2), respiratory exchange ratio (RER), metabolic equivalents (METS) and heart rate (HR) when compared with the traditional Bruce protocol...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/28759977/effects-of-progressive-backward-body-weight-suppoted-treadmill-training-on-gait-ability-in-chronic-stroke-patients-a-randomized-controlled-trial
#12
Kyung Hun Kim, Kyoung Bo Lee, Young-Hyeon Bae, Shirley S M Fong, Suk Min Lee
BACKGROUND AND OBJETIVE: A stroke patient with hemiplegic gait is generally described as being slow and asymmetric. Body weight-supported treadmill training and backward gait training are recent additions to therapeutic gait trainings that may help improve gait in stroke patient with hemiplegic gait. Therefore, we examined the effect of progressive backward body weight-supported treadmill training on gait in chronic stroke patients with hemiplegic gait. METHODS: Thirty subjects were divided to the experimental and control groups...
July 25, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28757160/mitochondrial-impairments-contribute-to-spatial-learning-and-memory-dysfunction-induced-by-chronic-tramadol-administration-in-rat-protective-effect-of-physical-exercise
#13
Hajar Mehdizadeh, Jalal Pourahmad, Ghorban Taghizadeh, Nasim Vousooghi, Ali Yoonessi, Parvaneh Naserzadeh, Ladan Behzadfar, Mohammad Reza Rouini, Mohammad Sharifzadeh
Despite the worldwide use of tramadol, few studies have been conducted about its effects on memory and mitochondrial function, and controversial results have been reported. Recently, there has been an increasing interest in physical exercise as a protective approach to neuronal and cognitive impairments. Therefore, the aim of this study was to investigate the effects of physical exercise on spatial learning and memory and brain mitochondrial function in tramadol-treated rats. After completion of 2-week (short-term) and 4-week (long-term) treadmill exercise regimens, male Wistar rats received tramadol (20, 40, 80mg/kg/day) intraperitoneally for 30days...
July 27, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28756215/treadmill-running-prevents-age-related-memory-deficit-and-alters-neurotrophic-factors-and-oxidative-damage-in-the-hippocampus-of-wistar-rats
#14
Cláudia Vanzella, Juliana Dalibor Neves, Adriana Fernanda Vizuete, Dirceu Aristimunha, Janaína Kolling, Aline Longoni, Carlos Alberto Saraiva Gonçalves, Angela T S Wyse, Carlos Alexandre Netto
Clinical and pre-clinical studies indicate that exercise is beneficial to many aspects of brain function especially during aging. The present study investigated the effects of a treadmill running protocol in young (3month-old) and aged (22month-old) male Wistar rats, on: I) cognitive function, as assessed by spatial reference memory in the Morris water maze; II) oxidative stress parameters and the expression of neurotrophic factors BDNF, NT-3, IGF-1 and VEGF in the hippocampus. Animals of both ages were assigned to sedentary (non-exercised) and exercised (20min of daily running sessions, 3 times per week for 4weeks) groups...
July 26, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28752607/reproducibility-of-heart-rate-recovery-in-patients-with-intermittent-claudication
#15
Rafael Yokoyama Fecchio, Marcel Chehuen, Tiago Peçanha, Gabriel Grizzo Cucato, Luiz Augusto Riani Costa, Anthony Scott Leicht, Raphael Mendes Ritti-Dias, Nelson Wolosker, Cláudia Lúcia de Moraes Forjaz
BACKGROUND: Postexercise heart rate recovery (HRR) is a non-invasive tool for cardiac autonomic function assessment. Reproducibility of HRR has been established in healthy subjects; however, no study has evaluated this reproducibility in clinical populations who may present autonomic dysfunction. Patients with peripheral artery disease and intermittent claudication (IC) often present altered cardiac autonomic function and HRR could be an interesting tool for evaluating autonomic responses to interventions in this population...
July 28, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28751866/ventilatory-efficiency-in-children-and-adolescents-born-extremely-preterm
#16
Julie Hestnes, Hedda Hoel, Ole J Risa, Hanna O Romstøl, Ola Røksund, Bente Frisk, Einar Thorsen, Thomas Halvorsen, Hege H Clemm
Purpose: Children and adolescents born extremely preterm (EP) have lower dynamic lung volumes and gas transfer capacity than subjects born at term. Most studies also report lower aerobic capacity. We hypothesized that ventilatory efficiency was poorer and that breathing patterns differed in EP-born compared to term-born individuals. Methods: Two area-based cohorts of participants born with gestational age ≤28 weeks or birth weight ≤1000 g in 1982-85 (n = 46) and 1991-92 (n = 35) were compared with individually matched controls born at term...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28751429/energy-drinks-give-you-wings-but-also-an-abnormal-exercise-test
#17
Tawfiqur R Choudhury, Muhammad A Abdool, Gavin Galasko
This is the case of a 53-year-old man with known coronary artery disease who underwent two exercise treadmill tests (ETT). The first test, which yielded an abnormal result, was undertaken shortly after he had drunk two cans of Red Bull, a popular energy drink (ED). A second ETT was undertaken 1 week later by the same team without EDs on board and the test result was normal. This case suggests that drinking EDs prior to an ETT could lead to a false positive result and should be discouraged prior to exercise testing...
July 27, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28750735/treatment-with-recombinant-human-mg53-protein-increases-membrane-integrity-in-a-mouse-model-of-limb-girdle-muscular-dystrophy-2b
#18
Liubov V Gushchina, Sayak Bhattacharya, Kevin E McElhanon, Jin Hyuk Choi, Heather Manring, Eric X Beck, Jenna Alloush, Noah Weisleder
Limb girdle muscular dystrophy type 2B (LGMD2B) and other dysferlinopathies are degenerative muscle diseases that result from mutations in the dysferlin gene and have limited treatment options. The dysferlin protein has been linked to multiple cellular functions including a Ca(2+)-dependent membrane repair process that reseals disruptions in the sarcolemmal membrane. Recombinant human MG53 protein (rhMG53) can increase the membrane repair process in multiple cell types both in vitro and in vivo. Here, we tested whether rhMG53 protein can improve membrane repair in a dysferlin-deficient mouse model of LGMD2B (B6...
July 3, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28747896/time-dependent-effects-of-acute-exercise-on-university-students-cognitive-performance-in-temperate-and-cold-environments
#19
Ling-Yu Ji, Xiao-Ling Li, Yang Liu, Xiu-Wen Sun, Hui-Fen Wang, Long Chen, Liang Gao
Background: Few studies have examined the acute exercise-induced changes in cognitive performance in different thermal environments and the time course effects. Objective: Investigate the time-dependent effects of acute exercise on university students' processing speed, working memory and cognitive flexibility in temperate and cold environments. Method: Twenty male university students (age 23.5 ± 2.0 years) with moderate physical activity level participated in a repeated-measures within-subjects design. Processing speed, working memory and cognitive flexibility were assessed using CogState test battery at baseline (BASE), followed by a 45-min rest (REST), immediately after (EX) and 30 min after (POST-EX) 30-min moderate-intensity treadmill running in both temperate (TEMP; 25°C) and cold (COLD; 10°C) environments...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28745473/does-the-aerobic-threshold-correlate-with-the-maximal-fat-oxidation-rate-in-short-stage-treadmill-tests
#20
Ratko Peric, Marco Meucci, Pitre C Bourdon, Zoran Nikolovski
BACKGROUND: The aim of this study was to identify the exercise intensity that elicited the highest rate of fat utilization (FATmax) and to assess its relationship with the aerobic threshold (AeT) in male athletes. We hypothesized existence of high correlation of these two parameters when a short-staged graded treadmill test with AeT identified through breath-by-breath gas exchange analysis was used. METHODS: Fifty-six trained male athletes (age 25.6 ± 3.4 y, height 197...
July 25, 2017: Journal of Sports Medicine and Physical Fitness
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