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exercise stress test

Douglas M Jones, Bart Roelands, Stephen P Bailey, Michael J Buono, Romain Meeusen
PURPOSE: It is well-documented that severe cold stress impairs exercise performance. Repeated immersion in cold water induces an insulative type of cold acclimation, wherein enhanced vasoconstriction leads to greater body heat retention, which may attenuate cold-induced exercise impairments. The purpose of this study, therefore, was to investigate changes in exercise performance during a 7-day insulative type of cold acclimation. METHODS: Twelve healthy participants consisting of eight males and four females (mean ± SD age: 25...
March 19, 2018: European Journal of Applied Physiology
Victoria Pons, Joan Riera, Xavier Capó, Miquel Martorell, Antoni Sureda, Josep A Tur, Franchek Drobnic, Antoni Pons
Background: Caloric restriction induces mitochondrial biogenesis and improves physical fitness in rodents. We aimed to provide evidence of how caloric restriction affects the body composition and physical performance of trained athletes and to evaluate the possible impact of an every-other-day feeding diet on nutritional deficiencies of micronutrients and essential fatty acids. Methods: The study was performed with 12 healthy male athletes by carrying out a 33% caloric restriction with respect to their usual diet...
2018: Journal of the International Society of Sports Nutrition
Ryoma Michishita, Masanori Ohta, Masaharu Ikeda, Ying Jiang, Hiroshi Yamato
AIM: This study was designed to examine the associations between an exaggerated systolic blood pressure (SBP) response to exercise and the nutrient intake in normotensive subjects. METHODS: The subjects consisted of 302 normotensive subjects (64 males and 238 females; age, 48.4 ± 11.3 years) without a history of cardiovascular disease or stroke who were not taking any medications. Each subject performed a multistage graded submaximal exercise stress test using an electric bicycle ergometer, and their blood pressure was measured at rest and during the last minute of each stage...
March 19, 2018: Clinical and Experimental Hypertension: CHE
Jeness Campodonico, Massimo Mapelli, Emanuele Spadafora, Stefania Ghilardi, Piergiuseppe Agostoni, Cristina Banfi, Susanna Sciomer
Alveolar-capillary membrane evaluated by carbon monoxide diffusion (DLCO) plays an important role in heart failure (HF). Surfactant Proteins (SPs) have also been suggested as a worthwhile marker. In HF, Levosimendan improves pulmonary hemodynamics and reduces lung fluids but associated SPs and DLCO changes are unknown. Sixty-five advanced HF patients underwent spirometry, cardiopulmonary exercise test (CPET) and SPs determination before and after Levosimendan. Levosimendan caused natriuretic peptide-B (BNP) reduction, peakVO2 increase and VE/VCO2 slope reduction...
March 13, 2018: Respiratory Physiology & Neurobiology
Masoumeh Shohani, Gholamreza Badfar, Marzieh Parizad Nasirkandy, Sattar Kaikhavani, Shoboo Rahmati, Yaghoob Modmeli, Ali Soleymani, Milad Azami
Background: In recent decades, several medical and scientific studies on yoga proved it to be very useful in the treatment of some diseases. This study was conducted to investigate the effects of yoga on stress, anxiety, and depression in women living in Ilam, Iran. Methods: This study is a quasi-experimental study with pre-post test. To collect data, the questionnaire of DASS-21 (Depression Anxiety Stress Scale-21) was used. For eligible samples, hatha yoga exercises and training sessions were held for 4 weeks (3 time/weeks; 60-70 min each) by a specialist...
2018: International Journal of Preventive Medicine
Anna Maria Fratta Pasini, Chiara Stranieri, Anna Maria Rigoni, Sergio De Marchi, Denise Peserico, Chiara Mozzini, Luciano Cominacini, Ulisse Garbin
AIM: Ischemia-reperfusion (I-R) produces reactive oxygen species (ROS) that damage cells and favour cytotoxicity and apoptosis in peripheral artery disease (PAD) patients. Since brief episodes of I-R (ischemic conditioning) protect cells against ischemic harms, we evaluated whether a short-course of supervised treadmill training, characterized by repeated episodes of I-R, makes peripheral blood mononuclear cells (PBMCs) from PAD patients with intermittent claudication more resistant to I-R injuries by reducing oxidative stress and by inducing an adaptative response of unfolded protein response (UPR) and nuclear factor-E2-related factor (Nrf2) pathway expression...
March 13, 2018: Journal of Atherosclerosis and Thrombosis
Guglielmo Duranti, Roberta Ceci, Federica Patrizio, Paolo Sgrò, Luigi Di Luigi, Stefania Sabatini, Francesco Felici, Ilenia Bazzucchi
The polyphenolic flavonoid quercetin has been shown to be a powerful antioxidant, in vitro and in murine models. However, its effect on redox status has been poorly examined in humans, particularly in combination with strenuous exercise. We hypothesized that quercetin supplementation would beneficially affect redox homeostasis in healthy individuals undergoing eccentric exercise. To test this hypothesis, the effects of chronic consumption of quercetin on glutathione system (reduced, oxidized, and reduced to oxidized glutathione ratio), oxidative damage [thiobarbituric acid reactive substances (TBARs)], antioxidant enzymatic network (catalase, glutathione peroxidase, superoxide dismutase) and resistance to lysis, were investigated in erythrocytes, a traditional model widely used to study the effects of oxidative stress as well as the protective effects of antioxidants...
February 2018: Nutrition Research
Laura H Bachmann, Bronwen Lichtenstein, Janet S St Lawrence, Margaret Murray, Gregory B Russell, Edward W Hook
OBJECTIVE: The aim of this study was to assess the general and sexual health of long-haul truck drivers in the United States. METHODS: Drivers were recruited from company sites and truck stops in North Carolina, Tennessee, and Mississippi. A sample of 266 drivers was assessed for lifestyle activities; body mass index and blood pressure were measured, and biologic samples were taken for cholesterol, diabetes, and sexually transmitted infection (STI)/HIV testing. RESULTS: The drivers in this study had higher levels of cholesterol and higher rates of smoking, obesity, and diabetes than the U...
March 13, 2018: Journal of Occupational and Environmental Medicine
Ceren Orhan, Türkan Akbayrak, Serap Özgül, Emine Baran, Esra Üzelpasaci, Gülbala Nakip, Nejat Özgül, Mehmet Sinan Beksaç
INTRODUCTION AND HYPOTHESIS: We evaluated whether vaginal tampon training (VTT) combined with pelvic floor muscle training (PFMT) results in better outcomes than PFMT alone for treating stress urinary incontinence (SUI). METHODS: This was a randomized, controlled study. Patients were allocated to either the combined program, consisting of PFMT and VTT over 12 weeks [PFMT and VTT group (n = 24)] or to PFMT alone [PFMT group (n = 24)]. The primary outcome measure was self-reported improvement, while secondary outcome measures were severity of incontinence, quality of life (QoL), urinary parameters, and pelvic floor muscle strength (PFMS) and endurance (PFME)...
March 13, 2018: International Urogynecology Journal
Krunoslav Michael Sveric, Stefan Ulbrich, Mohamed Rady, Christian Pflücke, Silvio Quick, Stefanie Katzke, Karim Ibrahim, Ruth H Strasser, Stefanie Jellinghaus
Objectives: Non-ischaemic dilated cardiomyopathy (DCM) is characterised by a highly variable disease progression. Stress echocardiography and cardiopulmonary exercise testing (CPET) are beneficial in risk assessment, but are labour intensive. Repetitive squatting and standing without weights is a simple exercise (EX). The aim of this study was to investigate the prognostic role of left ventricular (LV) contractile recruitment (CR) after a simple EX of repetitive squatting through three-dimensional (3D) echocardiography...
2018: Open Heart
Daniel Y T Fong, Janet Y H Wong, Lixi Huang
OBJECTIVE: The aim of this study was to assess the impact of auditory noise tolerance on non-restorative sleep using an objective audiometric test in a representative sample. DESIGN: A total of 202 Chinese individuals aged 15 years and above were recruited from a population-based household survey. Their non-restorative sleep was assessed by a single item, the degree of feeling refreshed on waking up, on a 0-10 scale, while noise tolerance was measured by the most comfortable level expressed in A-weighted decibels...
March 12, 2018: BMJ Open
Samuel Wittekind, Wayne Mays, Yvette Gerdes, Sandra Knecht, John Hambrook, William Border, John Lynn Jefferies
Patients with a Fontan circulation have impaired exercise capacity. Cardiac rehabilitation (CR) has shown promise in enhancing peak exercise parameters in this population, but an improvement in submaximal exercise has not been consistently demonstrated. We assessed the hypothesis that participation in CR will be associated with more efficient oxygen extraction and ventilation during submaximal exercise. In this prospective study, pediatric Fontans completed two 60 min CR sessions per week for 12 weeks. Cardiopulmonary exercise testing and stress echocardiography were performed at baseline and last CR session, and then compared with a paired sample t test...
March 9, 2018: Pediatric Cardiology
Bo Xu, Paul Cremer, Wael Jaber, Stuart Moir, Serge C Harb, L Leonardo Rodriguez
Exercise stress electrocardiography is unreliable as a test for obstructive coronary artery disease (CAD) if the patient has left bundle branch block. The authors provide an algorithm for using alternative tests: exercise stress echocardiography, dobutamine echocardiography, computed tomographic (CT) angiography, and nuclear myocardial perfusion imaging.
March 2018: Cleveland Clinic Journal of Medicine
Carlos D Davila, James E Udelson
Among all patients referred for stress myocardial perfusion imaging (MPI), a substantial proportion in contemporary practice cannot exercise. Another group of patients are those who are thought to be able to achieve an adequate workload with treadmill (or bicycle) exercise but do not achieve at least 85% of maximum predicted heart rate without developing symptoms. There has been substantial interest and literature on the adjunctive use of vasodilator stress during the same visit to generate best-quality results for patients who do not exercise adequately...
March 2018: JACC. Cardiovascular Imaging
Débora de Cássia da Silva, Maryane Gabriela Tavares, Camila Karina Brito do Nascimento, Eduardo Carvalho Lira, Ângela Amâncio Dos Santos, Luciana Maria Silva de Seixas Maia, Manuella Batista-de-Oliveira Hornsby
OBJECTIVE: Virgin coconut oil (CO) and treadmill exercise have been reported to improve memory performance in young rats. CO has also been associated with antistress properties in young, stressed mice. Therefore, in this study we aimed to investigate whether CO and treadmill exercise could synergistically ameliorate the effects of chronic stress on anxiety-like behavior and episodic-like memory in young rats. METHODS: The rats received CO and were exercised (Ex) from the 15th to the 45th day of life...
March 8, 2018: Food & Function
Brett S Pexa, Eric D Ryan, Joseph B Myers
BACKGROUND: Previous research indicates that the amount of valgus torque placed on the elbow joint during overhead throwing is higher than the medial ulnar collateral ligament (UCL) can tolerate. Wrist and finger flexor muscle activity is hypothesized to make up for this difference, and in vitro studies that simulated activity of upper extremity musculature, specifically the flexor digitorum superficialis and flexor carpi ulnaris, support this hypothesis. PURPOSE: To assess the medial elbow joint space at rest, under valgus stress, and under valgus stress with finger and forearm flexor contraction by use of ultrasonography in vivo...
March 1, 2018: American Journal of Sports Medicine
Catharina Strid, Claes Andersson, Agneta Öjehagen
OBJECTIVES: Hazardous drinking could negatively affect health and lead to alcohol use disorders, but it is unclear how hazardous drinking affects treatment outcomes of depression and anxiety and stress-related mental health problems. The aim of this study was to examine whether hazardous drinking, measured by Alcohol Use Disorders Identification Test-Consumption (AUDIT-C), influences the outcomes of repeated assessments of psychological functioning (Outcome Questionnaire-45), stress (Perceived Stress Scale) and sleep (Karolinska Sleep Questionnaire), during and after treatment in patients with mental ill health...
March 6, 2018: BMJ Open
Thomas Moller, Harald Lindberg, May Brit Lund, Henrik Holmstrom, Gaute Dohlen, Erik Thaulow
We previously demonstrated an abnormally high right ventricular systolic pressure response to exercise in 50% of adolescents operated on for isolated ventricular septal defect. The present study investigated the prevalence of abnormal right ventricular systolic pressure response in 20 adult (age 30-45 years) patients who underwent surgery for early ventricular septal defect closure and its association with impaired ventricular function, pulmonary function, or exercise capacity. The patients underwent cardiopulmonary tests, including exercise stress echocardiography...
March 6, 2018: Cardiology in the Young
Christine R Kovach, Crystal-Rae Evans, Lisa Sattell, Kimberly Rosenau, Sandeep Gopalakrishnan
Mindfulness interventions have been beneficial for healthy adults and individuals experiencing a stressful medical or mental health diagnosis. The purposes of the current study were to: (a) determine feasibility of mindfulness for older adults in long-term residential settings, and (b) examine differences in outcomes between a mindfulness and cognitive activity. The current study is the first mindfulness study to include individuals in moderate and severe stages of dementia, and included 36 individuals with a range of cognitive abilities...
March 1, 2018: Research in Gerontological Nursing
Ali Emami, Asghar Tofighi, Siamak Asri-Rezaei, Behnaz Bazargani-Gilani
Strenuous physical exercise and hyperthermia may paradoxically induce oxidative stress and adverse effects on myocardial function. The purpose of this study was to investigate the effect of 14-d coenzyme Q10 (CoQ10) supplementation and pre-cooling on serum creatine kinase-MB (CK-MB), cardiac Troponin I (cTnI), myoglobin (Mb), lactate dehydrogenase (LD), total antioxidant capacity (TAC), lipid peroxidation (LPO) and CoQ10 concentration in elite swimmers. In total, thirty-six healthy males (mean age 17 (sd 1) years) were randomly selected and divided into four groups of supplementation, supplementation with pre-cooling, pre-cooling and control...
February 2018: British Journal of Nutrition
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