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Vengust Modest - - 2013
During intense exercise in horses the transvascular fluid flux in the pulmonary circulation (JV-A) represent 4% of cardiac output (Q). This fluid flux has been attributed to an increase in pulmonary transmural hydrostatic forces, increases in perfused microvascular surface area, and reversible alterations in capillary permeability under conditions of high ...
McLellan Tom M - - 2013
In many occupational settings, clothing must be worn to protect individuals from hazards in their work environment. However, personal protective clothing (PPC) restricts heat exchange with the environment due to high thermal resistance and low water vapor permeability. As a consequence, individuals who wear PPC often work in uncompensable heat ...
van der Bom Teun - - 2013
To identify which patients with a systemic right ventricle are at risk of clinical events. In patients with congenitally or atrially corrected transposition of the great arteries worsening of the systemic right ventricle is accompanied by clinical events, such as clinical heart-failure or the occurrence of arrhythmia. At baseline, all ...
Holsworth Ralph E RE - - 2013
Context Cardiovascular disease (CVD) is the leading cause of on-duty death among firefighters, totaling 45% of on-duty fatalities. Heat stress and fluid losses can result in decreases in cardiac output of firefighters, despite sustained tachycardia and maximally elevated heart rate during emergencies. Measurements of whole blood viscosity (WBV) may serve ...
Belavy Daniel L - - 2013
The impact of prolonged bed-rest on the cervical and upper thoracic spine is unknown. In the 2nd Berlin BedRest Study (BBR2-2), 24 male subjects underwent 60d bed-rest and performed either no exercise, resistive exercise or resistive exercise with whole-body vibration. Subjects were followed for 2-years after bed-rest. On axial cervical ...
Jonker Jacqueline T - - 2013
Purpose:To prospectively assess the effects of an exercise intervention on organ-specific fat accumulation and cardiac function in type 2 diabetes mellitus.Materials and Methods:Written informed consent was obtained from all participants, and the study protocol was approved by the medical ethics committee. The study followed 12 patients with type 2 diabetes ...
Jacobs Robert A - - 2013
Six sessions of high-intensity interval training (HIT) are sufficient to improve exercise capacity. The mechanisms explaining such improvements are unclear. Accordingly, the aim of this study was to perform a comprehensive evaluation of physiologically relevant adaptations occurring after 6 sessions of HIT to determine the mechanisms explaining improvements in exercise ...
Borel Benoit - - 2013
AIM: To analyze breathing pattern and mechanical ventilatory constraints during incremental exercise in healthy and cystic fibrosis (CF) children. METHODS: Thirteen healthy children and 6 children with cystic fibrosis volunteered to perform an incremental test on a treadmill. Exercise tidal flow/volume loops were plotted every minute within a maximal flow/volume ...
Someya Fujiko - - 2013
BACKGROUND:: The diffusion capacity of the lung for carbon monoxide (DLCO) is a good marker of disease severity in patients with idiopathic interstitial pneumonia, and is associated with oxygen saturation; however, little is known about this marker in systemic sclerosis patients with interstitial lung disease. We aimed to indicate the ...
Dixon Jennifer L - - 2013
Fibrous dysplasia may involve the ribs or thoracic spine and cause progressive asphyxiation. We present a 41-year-old man with polyostotic fibrous dysplasia who was admitted to the hospital with progressive shortness of breath requiring initiation of supplemental oxygen. Pulmonary function test results revealed severely limited function with forced expiratory volume ...
Monteiro W D - - 2013
Aim: Between-set rest intervals (RI) may be determined using exercise-recovery-ratio (ERR) or fixed periods. The study investigated the influence of different ERR and fixed RI on the training volume in sessions aiming for hypertrophy with upper-body exercises recruiting different muscle mass (bench press-BP and triceps extension-TE). Methods: Sixteen men (25±2 ...
Law K H - - 2013
The healthcare challenges in developed countries centre around the rise of chronic conditions and obesity. There is a call to shift the focus toward the primary prevention of these conditions. Clinicians will need to move beyond the comfort of prescribing pharmaceuticals and expand the scope to prescribing health, i.e. exercise. ...
Wax Benjamin - - 2013
Glycine-arginine-alpha-ketoisocaproic acid (GAKIC) is a relatively new supplement that athletes and fitness enthusiasts ingest to enhance performance during anaerobic exercise. Therefore, the purpose of this study was to investigate the potential ergogenic effects of GAKIC ingestion during multiple bouts of resistance exercise. Seven resistance-trained men participated in a randomized, counterbalanced, ...
Faude Oliver - - 2013
Abstract We aimed at comparing the endurance effects of high-intensity interval training (HIIT) with high-volume running training (HVT) during pre-season conditioning in 20 high-level youth football players (15.9 (s 0.8) years). Players either conducted HVT or HIIT during the summer preparation period. During winter preparation they performed the other training ...
Kwon Young Sub - - 2013
We previously reported that cold application to the palms between sets of high intensity bench press exercise produces an ergogenic effect in men. In this study we hypothesized that palm cooling or heating during rest intervals between high intensity weight training sets will increase total repetitions and exercise volume-load (kg) ...
Lu Wei - - 2013
BACKGROUND: The study was undertaken to assess the properties of mouse HCN4 (mHCN4)-modified canine mesenchymal stem cells (cMSCs) in dogs with experimentally induced complete atrioventricular (AV) block and electronic pacing. METHODS: Complete AV block was induced in adult dogs who had undergone implantation of backup electronic pacemakers. cMSCs were transfected ...
Zeraik Vivian M - - 2013
This study examined the distribution and orientation of gill O2 chemoreceptors in Oreochromis niloticus and their role in cardiorespiratory responses to graded hypoxia. Intact fish, and a group with the first gill arch excised (operated), were submitted to graded hypoxia and their cardiorespiratory responses (oxygen uptake - V˙O2, breathing frequency ...
Radovits Tamás - - 2013
Long-term exercise training is associated with characteristic structural and functional changes of the myocardium, termed athlete's heart. Several research groups investigated exercise training induced left ventricular (LV) hypertrophy in animal models, however only sporadic data exists about detailed hemodynamics. We aimed to provide functional characterization of exercise-induced cardiac hypertrophy in ...
Lammi Matthew R - - 2013
BACKGROUND: Despite its benefit, lung volume reduction surgery (LVRS) is underused, partially because of the heterogeneous responses and lack of recent outcomes data. METHODS: Data from 59 consecutive emphysema patients who underwent LVRS were analyzed. The proportion of patients responding based on 6-minute walk distance (6-MWD), exercise capacity (watts), and ...
Steding-Ehrenborg Katarina - - 2013
BACKGROUND: Studies of cardiovascular deconditioning are primarily carried out after experimental bed rest. No previous study has followed the cardiovascular effects of decreased and resumed physical activity in athletes after acute physical injury and convalescence. Anterior cruciate ligament (ACL) injury causes a significantly decreased activity level over a long period, ...
Zhang Pengyue - - 2013
BACKGROUND: Early exercise after stroke promoted angiogenesis and increased microvessles density. However, whether these newly formatted vessels indeed give rise to functional vascular and improve the cerebral blood flow (CBF) in impaired brain region is still unclear. The present study aimed to determine the effect of early exercise on angiogenesis ...
Mitchell Joel B - - 2013
PURPOSE OF REVIEW: The primary focus of this brief review is to describe the effect of carbohydrate (CHO) supplementation alone or in combination with protein on two responses during postexercise recovery that are not specifically related to the usual emphasis on glycogen resynthesis; that is, rapid postexercise rehydration, and recovery ...
Triki Moez M Unité de Recherche, Sousse Faculty of Medicine, University of Sousse, - - 2013
The aim of this study was to compare the impact of the practice of football and judo on lung function and aerobic performance of prepubertal boys. A total of ninety six prepubertal boys were studied. They assessed a measure of body composition using the skin folds method. They performed lung ...
Martinot Jean-Benoit - - 2013
Acute exposure to high altitude (HA) induces changes in CO membrane conductance (DmCO) and capillary lung volume (Vc). One source of scatter in literature data is exercise, climbing, prior to HA which was avoided in this study. Measurements were performed in 25 lowlanders at Brussels (D0) and at 4300 m ...
Naclerio Fernando - - 2013
This study examined the acute effects of different parallel squat post activation potentiation protocols with and without whole body vibration on jumping performance in college athletes. Fifteen males (20.3± 1.3 years, 179.50±5.3 cm, 81.0 ±10.8 kg) performed 3 repetitions of a countermovement jump and best drop jump after three conditions: ...
Chin Roberto C - - 2013
Rationale: It is not known if abnormal dynamic respiratory mechanics actually limit exercise in patients with mild COPD. We reasoned that failure to increase peak ventilation and tidal volume (VT) in response to dead space (DS) loading during exercise would indicate true ventilatory limitation to exercise in mild COPD. Objectives: ...
Van Ginckel Ans - - 2013
BACKGROUND: Effects of exercise on osteoarthritic cartilage remain elusive. OBJECTIVE: To investigate the effect of dynamic in vivo squatting exercise on magnitude and spatial pattern of acute cartilage responses in tibio-femoral osteoarthritis (i.e., Kellgren- Lawrence (K/L) grade 1-2). DESIGN: Case-control METHODS: Eighteen patients with medial doubtful-to-mild radiographic signs of tibio-femoral ...
Dokladny Karol K Department of Internal Medicine, University of New Mexico Health Sciences Center, Albuquerque, New Mexico 87131, - - 2013
The eukaryotic cell depends on multitiered homeostatic systems ensuring maintenance of proteostasis, organellar integrity, function and turnover, and overall cellular viability. At the two opposite ends of the homeostatic system spectrum are heat shock response and autophagy. Here, we tested whether there are interactions between these homeostatic systems, one universally ...
Doheny Emer P - - 2013
Aging-related decline in functional mobility is associated with loss of independence. This decline may be mitigated through programs of physical activity. Despite reports of aging-related mobility impairment in middle-aged adults, this age group has been largely overlooked in terms of exercise programs that target functional mobility and the preservation of ...
Taylor Bryan J - - 2013
To determine whether expiratory muscle fatigue (EMF) is involved in regulating operating lung volumes during exercise, nine recreationally-active subjects cycled at 90% of peak work rate to the limit of tolerance with prior induction of EMF (EMF-ex) and for a time equal to that achieved in EMF-ex without prior induction ...
Idorn Lars - - 2013
Background: Patients with a functionally univentricular heart, palliated a.m. Fontan, consequently have non-pulsatile pulmonary blood flow and are known to have a reduced pulmonary diffusing capacity. However, the cause of this reduction remains unclear. We aimed to assess the possible determinants in the aetiology of a reduced diffusing capacity and ...
Selkow Noelle M NM School of Kinesiology and Recreation, Illinois State University, Normal, IL 61761, USA. - - 2013
The purpose of this study was to assess microvascular perfusion immediately after eccentric exercise using contrast-enhanced sonography. An intravenous catheter was placed in the antecubital vein of the arm contralateral to the leg being tested for the delivery of microbubbles to 18 healthy volunteers (mean age ± SD, 22.2 ± ...
Galy Olivier - - 2013
PURPOSE: Post-exercise alveolar-capillary membrane diffusing capacity (DLco) often decreases in highly trained endurance athletes and seems linked to their training status. To test the hypothesis that training status influences post-exercise DLco, 13 male and 2 female triathletes (20.2±4.4 years old; 175.2±6.7 cm tall; weight in a range of 66.6±7.4 kg ...
Smith Michael M - - 2013
This study examined the relationship between hematocrit, blood viscosity, plasma viscosity, erythrocyte deformability, and fibrinogen concentration during maximal oxygen uptake in aerobically trained (AT) and resistance trained (RT) athletes. Maximal oxygen uptake was assessed using a Bruce graded exercise treadmill test to exhaustion, and blood samples were collected at rest ...
Lahaije Anke J M C - - 2013
BACKGROUND: Physical activity and health status deteriorate early in the course of chronic obstructive pulmonary disease (COPD). This can only partially be explained by the degree of airflow limitation. Changes in (resting and dynamic) lung volumes are known to be associated with functional impairments and thus might influence physical activity ...
Reddy Sushma - - 2013
Pulmonary insufficiency (PI) is a common long-term sequel after repair of tetralogy of Fallot, causing progressive right ventricular (RV) dilation and failure. We describe the physiologic and molecular characteristics of the first murine model of RV volume overload. Methods: PI was created by entrapping the pulmonary valve leaflets with sutures. ...
Rowland Thomas - - 2013
Understanding cardiac responses to exercise in healthy subjects is important in the evaluation of youth with heart disease. This review article incorporates previously published original research from the authors' laboratory to examine changes in stroke volume during progressive exercise which are consistent with a model in which circulatory responses are ...
Furrow Eva - - 2013
Objective-To identify characteristics of exercise-induced collapse in Labrador Retrievers and compare characteristics for dogs with various dynamin 1 gene (DNM1) mutation statuses. Design-Retrospective cross-sectional study. Animals-109 Labrador Retrievers with a history of recurrent exercise-induced collapse, clinically normal behavior and gait between episodes, and no reason for collapse identified via medical ...
Brolo Alexandre G - - 2013
Periodic plasmonic nanostructures are being widely studied, optimized and developed to produce a new generation of low-cost and efficient chemical sensors and biosensors. The wide variety of nanostructures, interrogation approach, and setups makes a direct comparison of the reported performance from different sensing platforms a challenging exercise. In this feature ...
Brun J-F - - 2013
Classic studies on exercise hemorheology evidenced that blood fluidity is impaired during exercise (short term exercise-induced hyperviscosity) and is improved as a result of regular exercise practice (hemorheologic fitness). Extensive description of these events led to the concepts of "the triphasic effects of exercise", "the paradox of hematocrit", and "the ...
Dolmage Thomas E - - 2013
Measuring the severity of dynamic hyperinflation is a useful clinical approach to assess the effect of therapeutic interventions and explain their impact on exercise tolerance. Dynamic hyperinflation is typically quantified by the change in end expiratory lung volume from rest to the end of exercise. The result may be inconsistent ...
Currie Katharine D - - 2013
Purpose: Isocaloric interval exercise training programs have been shown to elicit improvements in numerous physiological indices in patients with coronary artery disease (CAD). Low-volume high-intensity interval exercise training (HIT) is effective in healthy populations; however its effectiveness in cardiac rehabilitation has not been established. This study compared the effects of ...
Pongdee Thanai - - 2013
To review the literature regarding the pathophysiology of exercise-induced bronchoconstriction (EIB). The databases of PubMed, Ovid MEDLINE, and Scopus were searched for articles using the subject headings and/or keywords asthma, exercise-induced/etiology, exercise, mechanism, pathogenesis, and bronchoconstriction. Articles were selected based on their relevance to the focus of this review, with ...
Molino-Lova Raffaele - - 2013
Background: Although the six-minute walk test (6MWT) is widely used in cardiac rehabilitation, little is known about the ventilatory strategies adopted by older patients who have recently undergone median sternotomy, in order to meet the increased metabolic demand in the 6MWT. Methods: Using a portable gas-analyser we assessed the breathing ...
Vromen T - - 2013
To assess methods for determination of exercise intensity, and to investigate practice variation with respect to the contents, volume and intensity of exercise training programs in Dutch cardiac rehabilitation (CR) centres. A paper questionnaire was sent to all Dutch CR centres, consisting of 85 questions for patients with an acute ...
Foster Philip P - - 2013
To reduce bubble formation and growth during hypobaric exposures, a denitrogenation or nitrogen "washout" procedure is performed. This procedure consists of prebreathing oxygen fractions as close to one as possible (oxygen prebreathe) prior to depressurization before ascending to the working altitude or low spacesuit pressures. During the NASA prebreathe reduction ...
Fatima Syeda Sadia - - 2013
To assess and compare changes in pulmonary functions before and after exercise in young healthy adults. The case-control study was carried out from January to March 2010 on 292 medical students aged 18-24 years at Bahria University Medical and Dental College, Karachi. Baseline values for forced expiratory volume (FEV1) and ...
Tang Kechun - - 2013
Pulmonary TNFα has been linked to reduced exercise capacity in a subset of patients with moderate to severe chronic obstructive pulmonary disease. We hypothesized that prolonged, high expression of pulmonary TNFα impairs cardiac and skeletal muscle function and both contribute to exercise limitation. Using a surfactant protein C promoter-TNFα construct, ...
Welvaart Willem N - - 2013
OBJECTIVES: Paralysis of the diaphragm is an uncommon condition, which may result in dyspnoea on excertion and in orthopnea. In patients who have symptoms, the paralysed diaphragm is often plicated to prevent its paradoxical movement on inspiration. This procedure brings relief to many patients, but the mechanism for this improvement ...
Walter Ashley A - - 2013
ABSTRACT: The purpose of this study was to examine the effects of two different types of protein supplementation on thigh muscle cross-sectional area, blood markers, muscular strength, endurance, and body composition after eight weeks of low- or moderate-volume resistance training in healthy, recreationally trained, college-aged men. One hundred and six ...
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