Search Results
Results 151 - 200 of 699
1 2 3 4 5 6 7 8 9 10 >
Annesi James J - - 2013
Although research indicates that treatment-induced improvements in self-regulation, mood, and self-efficacy significantly predict increased exercise and improved eating, moderation by participants' personal characteristics is largely unknown. Severely obese adults (N = 414; 47% White, 53% African American) volunteered for a behavioral exercise and nutrition treatment and demonstrated significant within-group improvements ...
Marongiu Elisabetta - - 2013
The aim of the present study was to test the contribution of stroke volume in hemodynamic response to muscle metaboreflex activation in healthy individuals. We hypothesized that an acute decrease in cardiac after-load and pre-load due to the administration of a vasodilating agent could reduce post-exercise muscle ischemia (PEMI)-induced stroke ...
Van Roie Evelien - - 2013
Muscle adaptations can be induced by high-resistance exercise. Despite being potentially more suitable for older adults, low-resistance exercise protocols have been less investigated. We compared the effects of high- and low-resistance training on muscle volume, muscle strength, and force-velocity characteristics. Fifty-six older adults were randomly assigned to 12 weeks of ...
Hulme Kathryn M - - 2013
It is unclear whether the failure to reverse bronchoconstriction with deep inspiration (DI) in asthma is due to reduced maximal dilatation of the DI. We compared the effect of different DI volumes on maximal dilatation and reversal of bronchoconstriction in nine asthmatics and ten non-asthmatics. During bronchoconstriction, subjects took DI ...
Christensen Pernille M - - 2013
Pre- and post-exercise flow-volume loops are often recommended as an easy non-invasive method for diagnosing or excluding exercise-induced laryngeal obstructions in patients with exercise-related respiratory symptoms. However, at present there is no evidence for this recommendation. To compare physician evaluated pre- and post-exercise flow-volume loops and flow data with laryngoscopic ...
Mercer-Rosa Laura - - 2013
Assessing right ventricular (RV) performance is essential for patients with tetralogy of Fallot (TOF). The aim of this study was to investigate the reliability and validity of tricuspid annular plane systolic excursion (TAPSE) against cardiac magnetic resonance imaging measures and cardiopulmonary exercise testing. A retrospective study was performed in 125 ...
Sloth M - - 2013
Recently, several studies have examined whether low-volume sprint interval training (SIT) may improve aerobic and metabolic function. The objective of this study was to systematically review the existing literature regarding the aerobic and metabolic effects of SIT in healthy sedentary or recreationally active adults. A systematic literature search was performed ...
Jabbour Georges G a Movement Sport and Health Sciences Laboratory (M2S). UFRAPS, University of Rennes-ENS Cachan, Av. Charles Tillon, 35044 Rennes cedex, - - 2014
Previous studies have demonstrated that considerable plasma volume variations (ΔPV) occur during and after exposure to different environmental and physiological conditions. Such changes have an important effect on plasma concentration of metabolite values. Currently, no study has examined ΔPV in individuals with different body weight status and used ΔPV to ...
Zuo Ming-Liang - - 2013
Exercise capacity is reduced in patients with end-stage renal disease on maintenance home peritoneal dialysis therapy, although the potential mechanisms and clinical implications remain unclear. Cross-sectional study. 95 ambulatory prevalent and incident peritoneal dialysis patients in a well-established renal dialysis center (mean age, 58.26 ± 12.6 [SD] years; 63% men; ...
Li Na - - 2013
Large-conductance Ca(2+)-activated K(+) (BKCa) channels provide a negative feedback that regulates vascular tone in the brain circulation. This study investigated the effects of aerobic exercise on gating properties of BKCa channels in rat cerebral artery. Rats were subjected to moderate-intensity exercise at low (EX-3d/w) and high (EX-5d/w) training volume on ...
Boshuizen Rogier C - - 2013
Dyspnea is the most common symptom in patients with malignant pleural effusion (MPE). Treatment decisions are primarily based on the perception of dyspnea severity. To study dyspnea perception following therapeutic thoracentesis using the visual analog scale (VAS) dyspnea score and modified Borg scale (MBS). To investigate whether patient reported outcome ...
Matsuo Tomoaki - - 2013
The aim of this study was to compare the effects of time-efficient, low-volume, interval exercises on cardiorespiratory capacity and left ventricular (LV) mass with traditional continuous exercise in sedentary adults. Forty-two healthy but sedentary male subjects (aged 26.5 ± 6.2 years) participated in an 8-week, 5 times/week, supervised exercise intervention. ...
Costalat Guillaume - - 2013
Voluntary breath-holding (BH) elicits several hemodynamic changes, but little is known about maximal static immersed-body BH. We hypothesized that the diving reflex would be strengthened with body immersion and would spare more oxygen than maximal dry static BH, resulting in a longer BH duration. Eleven trained breath-hold divers (BHDs) performed ...
Selsby Joshua T JT Department of Animal Science, College of Agriculture and Life Sciences, Iowa State University, Ames, - - 2013
Dystrophin-deficient muscles suffer from free radical injury, mitochondrial dysfunction, apoptosis, and inflammation, among other pathologies that contribute to muscle fiber injury and loss, leading to wheelchair confinement and death in the patient. For some time, it has been appreciated that endurance training has the potential to counter many of these ...
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 ...
Molino-Lova Raffaele R Cardiac Rehabilitation Unit, Don Gnocchi Foundation, 50143 Florence, Italy. - - 2013
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. Using a portable gas-analyser we assessed the breathing patterns in ...
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 ...
1 2 3 4 5 6 7 8 9 10 >