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Treadmil exercise testing

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https://www.readbyqxmd.com/read/29140137/v%C3%AC-o2-and-muscle-deoxygenation-kinetics-during-skating-comparison-between-slide-board-and-treadmill-skating
#1
Tatiane Piucco, Rogério Soares, Fernando Diefenthaeler, Guillaume Millet, Juan Murias
PURPOSE: this study aimed to compare the oxygen uptake (V̇O2) kinetics during skating on a treadmill and skating on a slide board and discuss potential mechanisms that might control the V̇O2 kinetics responses during skating. METHODS: breath-by-breath pulmonary V̇O2 and near-infrared spectroscopy-derived muscle deoxygenation ([HHbMb]) were monitored continuously in 12 well-trained young long track speed skaters. On-transient V̇O2 and [HHbMb] responses to skating on a treadmill and skating on a slide board at 80% of the estimated gas exchange threshold were fitted as mono-exponential function...
November 15, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29135785/comparison-of-polar-m600-optical-heart-rate-and-ecg-heart-rate-during-exercise
#2
John F Horton, Pro Stergiou, Tak S Fung, Larry Katz
PURPOSE: The purpose of this study was to evaluate the accuracy of the Polar M600 optical heart rate (OHR) sensor compared with ECG heart rate (HR) measurement during various physical activities. METHODS: Thirty-six subjects participated in a continuous 76-min testing session, which included rest, cycling warm-up, cycling intervals, circuit weight training, treadmill intervals, and recovery. HR was measured using a three-lead ECG configuration and a Polar M600 Sport Watch on the left wrist...
December 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29132927/whole-exome-sequencing-identified-a-pathogenic-mutation-in-ryr2-in-a-chinese-family-with-unexplained-sudden-death
#3
Yubi Lin, Siqi He, Zili Liao, Ruiling Feng, Ruilin Liu, Yongzheng Peng, Nan Yu, Hang Qi, Jia Chen, Zifeng Huang, Heping Lei, Yang Liu, Fang Rao, Chunyu Deng, Yumei Xue, Guolin Zhang, Bin Zhang, Hua Yao, Shulin Wu
OBJECTIVE: This study aimed to identify the pathogenic mutation in a Chinese family with unexplained sudden death (USD) or occasional syncope. MATERIALS AND METHODS: Whole exome sequencing and target capture sequencing were respectively conducted for two related patients. The genetic data was screened using the 1000 genomes project and SNP database (PubMed), and the identified mutations were assessed for predicted pathogenicity using the SIFT and Polyphen-2 algorithms...
October 10, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29131814/effects-of-an-exercise-protocol-for-improving-handgrip-strength-and-walking-speed-on-cognitive-function-in-patients-with-chronic-stroke
#4
Jaeeun Kim, Jongeun Yim
BACKGROUND Handgrip strength and walking speed predict and influence cognitive function. We aimed to investigate an exercise protocol for improving handgrip strength and walking speed, applied to patients with chronic stroke who had cognitive function disorder. MATERIAL AND METHODS Twenty-nine patients with cognitive function disorder participated in this study, and were randomly divided into one of two groups: exercise group (n=14) and control group (n=15). Both groups underwent conventional physical therapy for 60 minutes per day...
November 13, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29125056/monosodium-glutamate-and-treadmill-exercise-anxiety-like-behavior-and-spreading-depression-features-in-young-adult-rats
#5
Suênia Marcele Vitor-de-Lima, Larissa de Brito Medeiros, Regina de Deus Lira Benevides, Catarina Nicácio Dos Santos, Nahara Oliveira Lima da Silva, Rubem Carlos Araújo Guedes
OBJECTIVES: The route of administration is an important factor in determining the action of some drugs. We previously demonstrated that subcutaneous monosodium glutamate (MSG) accelerated cortical spreading depression (CSD) in the rat and that treadmill exercise attenuated this effect. This study evaluated whether other routes of administration exert the same action by testing orogastric (gavage) and topical cortical MSG administration in treadmill-exercised and sedentary rats. Additionally, in the orogastric treatment we tested anxiety-like behavior...
November 10, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/29123337/effect-of-aerobic-exercise-on-cancer-related-fatigue
#6
Jaivika Govindbhai Patel, Anjali R Bhise
Background: Fatigue is the most common side effect of cancer treatment with chemotherapy and/or radiation therapy, selected biologic response modifiers. The main purpose of this study is to evaluate the effects of aerobic exercise on cancer-related fatigue in patients of the solid tumor after chemotherapy and radiotherapy. Methods: After screening for cancer-related fatigue, 34 patients fulfilled the inclusive criteria and were assigned into two groups (n = 17 recruited in the intervention group and n = 17 in control group)...
October 2017: Indian Journal of Palliative Care
https://www.readbyqxmd.com/read/29122139/role-of-exercise-testing-in-hypertrophic%C3%A2-cardiomyopathy
#7
REVIEW
Ethan J Rowin, Barry J Maron, Iacopo Olivotto, Martin S Maron
Over the last 25 years, patients with hypertrophic cardiomyopathy (HCM) have been studied with a variety of methods employing physiological exercise that have made major contributions to disease management and are performed without increased risk. Previously under-utilized in HCM, exercise (stress) echocardiography has become incorporated into the standard clinical assessment and diagnostic armamentarium of HCM using upright or supine symptom-limited treadmill or bicycle modalities. In patients without outflow gradients at rest, exercise echocardiography is the most appropriate method for provoking obstruction, with the capability of predicting future development of progressive heart failure symptoms, and differentiating patients with provocable obstruction from those without obstruction, with major implications for dictating treatment options, that is, surgical myectomy (alternatively, alcohol septal ablation) versus heart transplant...
November 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29119373/additional-value-of-systolic-wall-thickening-in-myocardial-stunning-evaluated-by-stress-rest-gated-perfusion-spect
#8
Alberto Bestetti, Besart Cuko, Adriano Decarli, Alessio Galli, Federico Lombardi
AIM AND PATIENTS: The aim of the present study is to evaluate the additional value of systolic wall thickening to myocardial perfusion in diagnosing myocardial stunning in patients with angiography proven coronary artery disease. We selected 91 ischemic patients (82 males; mean age 59.7 ± 10.3) with CAD documented by angiography. Ischemia was defined as a summed difference score ≥5. All patients underwent a 2-day gated perfusion SPECT protocol. The patients received a dose of 740 MBq of (99m)Tc-tetrofosmin after stress and at rest...
November 8, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29116831/clinician-friendly-physical-performance-tests-for-the-knee
#9
Jerrod J Harrison, Marissa K Yorgey, Alexander J Csiernik, Joseph H Vogler, Kenneth E Games
Reference:  Hegedus EJ, McDonough S, Bleakley C, Cook CE, Baxter GD. Clinician-friendly lower extremity physical performance measures in athletes: a systematic review of measurement properties and correlation with injury. Part 1: the tests for knee function including the hop tests. Br J Sports Med. 2015;49(10):642-648. CLINICAL QUESTION:   Do individual physical performance tests (PPTs) used as measures for lower extremity function have any relationship to injuries in athletes aged 12 years or older? DATA SOURCES:   Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were used to locate articles...
November 8, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29114917/pulmonary-arterial-pressure-detects-functional-mitral-stenosis-after-annuloplasty-for-primary-mitral-regurgitation-an-exercise-stress-echocardiographic-study
#10
Niloufar Samiei, Marzieh Tajmirriahi, Ali Rafati, Yeganeh Pasebani, Yousef Rezaei, Saeid Hosseini
INTRODUCTION: The restrictive mitral valve annuloplasty (RMA) is the treatment of choice for degenerative mitral regurgitation (MR), but postoperative functional mitral stenosis remains a matter of debate. In this study, we sought to determine the impact of mitral stenosis on the functional capacity of patients. METHODS: In a cross-sectional study, 32 patients with degenerative MR who underwent RMA using a complete ring were evaluated. All participants performed treadmill exercise test and underwent echocardiographic examinations before and after exercise...
November 8, 2017: Echocardiography
https://www.readbyqxmd.com/read/29114515/responses-of-inflammatory-cytokines-following-moderate-intensity-walking-exercise-in-overweight-or-obese-individuals
#11
Yunsuk Koh, Kyung-Shin Park
This study investigated the effects of a 4-week moderate intensity walking exercise on the levels of C-reactive protein (CRP), tumor necrosis factor-alpha (TNF-α), and adiponectin in overweight or obese individuals. Twenty-seven (13 men and 14 women) physically inactive, over-weight or obese (body mass index>25.0 kg/m(2)) individuals participated in the study. Each participant was randomly assigned to either exercise (EX; n=15) or control (CON; n=12) group. The EX group performed moderate intensity walking exercise on a treadmill for 60 min at 70% of maximal heart rate for 4 weeks (3 days/wk)...
August 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29114501/age-dependent-differences-of-treadmill-exercise-on-spatial-learning-ability-between-young-and-adult-age-rats
#12
Jun-Jang Jin, Il-Gyu Ko, Sung-Eun Kim, Lakkyong Hwang, Man-Gyoon Lee, Dae-Young Kim, Sun-Young Jung
The effect of exercise, which increases hippocampal neurogenesis and improves memory function, is well documented, however, differences in the effect of exercise on young children and adults are not yet known. In the present study, age-dependent differences of treadmill exercise on spatial learning ability between young- and adult-age rats were investigated. The rats in the exercise groups were forced to run on a motorized treadmill for 30 min once a day for 6 weeks. Radial 8-arm maze test was conducted for the determination of spatial learning ability...
August 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29113570/a-novel-downhill-gait-training-program-following-a-total-knee-arthroplasty-a-case-report-highlighting-the-impacts-of-self-selected-speed-on-gait-symmetry
#13
Cody Blue, Sara Coomes, Yuri Yoshida
Study Design Case report. Background Walking plays an essential role in activities of daily living that lead to varied health benefits. Studies report gait speed and symmetry are impacted in individuals following TKA. Unfortunately, abnormal gait patterns persistently exist in individuals after TKA. Downhill walking may provide a simple and feasible exercise regimen to improve gait patterns. The purpose of this case report is to describe the application of a downhill treadmill training program and the subsequent changes in gait patterns in an individual following a unilateral TKA...
November 7, 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29098710/physical-exercise-alters-the-activation-of-downstream-proteins-related-to-bdnf-trkb-signaling-in-male-wistar-rats-with-epilepsy
#14
Alexandre Aparecido de Almeida, Sérgio Gomes da Silva, Glauber Menezes Lopim, Diego Vannucci Campos, Jansen Fernandes, Francisco Romero Cabral, Ricardo Mario Arida
There are a considerable number of studies concerning the behavioral effects of physical exercise on the epileptic brain; however, the intracellular signaling mechanisms involved remain unclear. We investigated the effects of aerobic exercise on hippocampal levels of brain-derived neurotrophic factor (BDNF), expression of its receptor tropomyosin receptor kinase B (TrkB), and activation of intracellular proteins related to BDNF-TrkB signaling in male Wistar rats with pilocarpine-induced epilepsy. Thirty days after the first spontaneous seizure, rats from the exercise group undertook a 30-day physical exercise program on the treadmill...
November 2, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/29093566/hypertension-induces-additional-cardiometabolic-impairments-and-attenuates-aerobic-exercise-training-adaptations-in-fructose-fed-ovariectomized-rats
#15
Janaina de O Brito-Monzani, Iris Callado Sanches, Nathalia Bernardes, Kátia Ponciano, Ivana C Moraes-Silva, Maria-Cláudia Irigoyen, Susana Llesuy, Kátia De Angelis
We tested whether hypertension favors the development of additional cardiometabolic changes in fructose-fed ovariectomized rats and how it affects aerobic exercise training (ET) effects. All rats received fructose in drinking water (10%) beginning at weaning, were ovariectomized at 10 weeks of age and divided into the normotensive sedentary (NFOS) and trained (NFOT) and hypertensive sedentary (HFOS) and trained (HFOT) groups. ET was performed on a treadmill. Arterial pressure (AP) was directly recorded; heart rate and AP variabilities were analyzed...
November 2, 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/29093419/exercise-induced-atrioventricular-block-with-coronary-artery-stenosis-that-appeared-five-years-after-bypass-surgery
#16
Shinya Yamazaki, Taku Kato, Shunpei Ushimaru, Hirokazu Yokoi, Hiroki Mani
A 68-year-old man with a history of coronary artery bypass surgery was referred to our hospital because of pre-syncope on effort. During a treadmill exercise electrocardiogram test, the patient developed advanced atrioventricular block associated with dizziness. Coronary angiography revealed significant stenosis of the right coronary artery, which had not existed at the time of the bypass surgery. We implanted drug-eluting stents in the stenotic lesion, and an exercise test showed resolution of the atrioventricular block...
November 1, 2017: Internal Medicine
https://www.readbyqxmd.com/read/29091740/comparison-between-pre-exercise-casein-peptide-and-intact-casein-supplementation-on-glucose-tolerance-in-high-fat-diet-fed-mice
#17
Yutaka Matsunaga, Yuki Tamura, Yasuyuki Sakata, Yudai Nonaka, Noriko Saito, Hirohiko Nakamura, Takashi Shimizu, Yasuhiro Takeda, Shin Terada, Hideo Hatta
We hypothesized that along with exercise, casein peptide supplementation would have a higher impact on improving glucose tolerance than intact casein. Male six-week-old ICR mice were provided a high-fat diet to induce obesity and glucose intolerance. The mice were randomly divided into four treatment groups: control (Con), endurance training (Tr), endurance training with intact casein supplementation (Cas+Tr), and endurance training with casein peptide supplementation (CP+Tr). The mice in each group were orally administrated water, intact casein, or casein peptide (1...
November 1, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29091329/repolarization-abnormalities-unmasked-with-exercise-in-sudden-cardiac-death-survivors-with-structurally-normal-hearts
#18
Kevin Mw Leong, Fu Siong Ng, Caroline Roney, Christopher Cantwell, Matthew J Shun-Shin, Nicholas Wf Linton, Zachary I Whinnett, David C Lefroy, D Wyn Davies, Sian E Harding, Phang Boon Lim, Darrel Francis, Nicholas S Peters, Amanda M Varnava, Prapa Kanagaratnam
BACKGROUND: Models of cardiac arrhythmogenesis predict that non-uniformity in repolarization and/or depolarization promotes ventricular fibrillation and is modulated by autonomic tone, but this is difficult to evaluate in patients. We hypothesize that such spatial heterogeneities would be detected by non-invasive ECG imaging (ECGi) in sudden cardiac death (SCD) survivors with structurally normal hearts under physiological stress. METHODS: ECGi was applied to 11 SCD survivors, 10 low-risk Brugada Syndrome patients (BrS) and 10 controls undergoing exercise treadmill testing...
November 1, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29080386/the-apex-trial-effects-of-allopurinol-on-exercise-capacity-coronary-and-peripheral-endothelial-function-and-natriuretic-peptides-in-patients-with-cardiac-syndrome-x
#19
Tiong Keng Lim, Awson Noman, AnnaMaria J Choy, Faisel Khan, Allan D Struthers, Chim C Lang
The role of endothelial dysfunction and oxidative stress in the pathogenesis of cardiac syndrome X has recently been recognised. Allopurinol has previously been shown to improve endothelial dysfunction, reduce oxidative stress burden and improve myocardial efficiency. In this 'proof of concept' study, we investigated the effect of allopurinol on exercise capacity, coronary and peripheral endothelial function, and serum B-type natriuretic peptide (BNP: a marker of cardiac function and myocardial ischaemia) in patients with cardiac syndrome X...
October 28, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/29079632/an-abnormal-structure-of-the-left-ventricle
#20
Yu Kang, Zheng Li, Ben He
CLINICAL INTRODUCTION: A 36-year-old man was referred for evaluation of an abnormal left ventricular (LV) structure found incidentally on transthoracic echocardiography (TTE) (figure 1). He had no symptoms except for mild palpitations. There was no significant medical history. Physical examination was unremarkable. ECG showed regular sinus rhythm with ST changes in lead II, III, avF and V6 (see online supplementary file 1). Cardiac magnetic resonance (CMR) (figure 1C) was performed. Treadmill exercise test did not demonstrate any electrocardiographic ischaemic changes...
October 27, 2017: Heart: Official Journal of the British Cardiac Society
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