Search Results
Results 151 - 200 of 1068
1 2 3 4 5 6 7 8 9 10 >
Lalanza Jaume F - - 2012
The benefits of long-term moderate exercise for health are widely accepted in humans, but few animal studies have been undertaken to characterize the effects of such activity on emotionality and responsiveness to stress. The present study describes the effects of long-term moderate forced treadmill training (36 weeks) on exploratory activity, ...
Wright Heather E - - 2012
Blood marker concentrations such as cortisol (COR) and interleukin (IL)-6 are commonly used to evaluate the physiological strain associated with work in the heat. It is unclear, however, if hot environments of an equivalent thermal stress, as defined by a similar wet bulb globe temperature (WBGT), result in similar response ...
Alipour M - - 2012
Oxidative stress forms the foundation for the induction of multiple cellular pathways which can lead to the complications of diabetes mellitus that the most debilitating ones are diseases of the nervous system. In this study, we evaluated whether treadmill running could alleviate oxidative stress and apoptosis rate in the hippocampus ...
Costin Alex - - 2012
Purpose: We sought to determine if an exercise programme of moderate aerobic intensity would decrease the heart-rate response to mental stress in teenagers with normal hearts.Methods: Mental stress testing (50 arithmetic problems) was performed in student volunteers before and after a 5-week period of rigorous aerobic exercise training of 2.5 ...
Di Franco Antonino - - 2012
ST-segment depression during exercise stress testing in asymptomatic subjects showing normal coronary arteries is considered a "false-positive" result. Coronary microvascular dysfunction, however, might be a possible cause of ST-segment depression in these cases. We assessed the coronary blood flow response to adenosine and to cold pressor test in the left ...
Gabriel Brendan - - 2012
Regular exercise can reduce the risk of cardiovascular disease. Although moderate intensity exercise can attenuate post-prandial triacylglycerol, high-intensity intermittent exercise might be a more effective method to improve health. We compared the effects of high-intensity intermittent exercise and 30 mins of brisk walking on postprandial triacylglycerol, soluble adhesion molecules and ...
Faёs Camille - - 2012
AIM: Alpha-thalassemia is known to reduce intra-erythrocyte HbS (sickle hemoglobin) concentration in sickle cell trait (SCT) subjects. Because HbS was shown to increase oxidative stress, the purpose of this study was to assess the effects of the coexistence of α-thalassemia and SCT on oxidative stress markers and nitric oxide (NO) ...
Philp Andrew - - 2012
The glycogen content of muscle determines not only our capacity for exercise but also the signaling events that occur in response to exercise. The result of the shift in signaling is that frequent training in a low-glycogen state results in improved fat oxidation during steady-state submaximal exercise. This review will ...
Casimiro-Lopes Gustavo - - 2012
Free radical production is increased in many disease states and during exercise, but in the latter the concurrent stimulation of the antioxidant defense system seems to protect the organism from excessive production of reactive oxygen species. Chronic exercise can exert negative effects on the activity of mitochondrial glycerol phosphate dehydrogenase ...
Sato Hiroki - - 2012
Decreased activity has been reported in both nocturnal and diurnal primates during the prolonged dry season in western Madagascar, and this has been interpreted as a reaction to the severe environment, with its food scarcity and/or thermal stress. Several day-active lemurs rest more as trees defoliate, although the reason for ...
Husley Caleb R - - 2012
The purpose of this study was to compare metabolic demand of a kettlebell (KB) swing routine to treadmill (TM) running at equivalent rating of perceived exertion (RPE). Thirteen subjects (11 M, 2 F, age = 21.4 ± 2.1 y, weight = 73.0 ± 9.2 kg) completed a 10-min KB swing ...
Demachi K - - 2012
To assess the effects of starting or stopping leg cooling on the thermoregulatory responses during exercise, 60 min of cycling exercise at 30% of maximal oxygen uptake was performed under 4 conditions using tube trouser perfused with water at 10°C; no leg cooling (NC), starting of leg cooling after 30 ...
Stoebner Richard - - 2012
Intense exercise requires a significant increase in cardiac output in order to meet the needs of the skeletal muscles for oxygenated blood. In order to improve cardiac performance, the autonomic nervous system increases sympathetic tone primarily through release of norepinephrine from postganglionic receptors to stimulate the β-adrenergic receptors of the ...
Hayashi Miyuki - - 2012
AimsCatecholaminergic polymorphic ventricular tachycardia (CPVT) is an inherited arrhythmic disorder with a highly malignant clinical course. Exercise-stress test is the first-line approach to diagnose suspected individuals. We sought to elucidate the value of exercise-stress test for predicting mutations and future cardiac events in CPVT-family relatives.Methods and resultsThe present study included ...
Iguchi Masaki - - 2012
Conditions such as osteoarthritis, obesity, and spinal cord injury limit the ability of patients to exercise, preventing them from experiencing many well-documented physiologic stressors. Recent evidence indicates that some of these stressors might derive from exercise-induced body temperature increases. To determine whether whole-body heat stress without exercise triggers cardiovascular, hormonal, ...
Kennard John A JA Department of Psychology, Temple University, 1701 North 13th Street, Philadelphia, PA 19122, - - 2012
In this study we compared two types of forced exercise-a low impact paradigm to minimize stress, which included speeds up to 10 m/min and a stressful high impact paradigm, with speeds up to 21 m/min. 150 male C57BL/6J mice were randomly assigned to the low impact, high impact, or sedentary ...
Minardi Giovanni - - 2012
We describe the case of a patient with typical chest pain but negative maximal bicycle exercise-electrocardiogram test and for whom significant coronary artery disease was hypothesized by a positive handgrip exercise test and demonstrated by coronary angiography. Despite negative exercise stress test, handgrip as well as other provocative tests have ...
Woods D R - - 2012
High altitude exposure normally leads to a marked natriuresis and diuresis. Acute mountain sickness is often associated with fluid retention, to which an elevated cortisol may contribute. Most investigators report a rise in resting cortisol with ascent, but little data exist regarding the cortisol response to a day trekking. We ...
Ren Zhuyin - - 2012
Pulmonary embolism is the third leading cause of death in hospitalized patients in the US. Vena cava filters are medical devices inserted into the inferior vena cava (IVC) and are designed to trap thrombi before they reach the lungs. Once trapped in a filter, however, thrombi disturb otherwise natural flow ...
Rontoyanni Victoria G - - 2012
Long-chain n-3 PUFA can lower blood pressure (BP) but their acute effects on cardiac output, BP and systemic vascular resistance (SVR) in response to dynamic exercise are uncertain. We compared the effects of high-fat meals rich in EPA (20 : 5n-3), DHA (22 : 6n-3) or oleic acid (control) on cardiac output, BP and ...
Pauliks Linda B - - 2012
Adult studies suggest a better functional outcome after aortic valve replacement with a pulmonary autograft compared with mechanical or homograft valves. Little is known about functional results after Ross surgery in growing children. This study reports formal exercise stress echocardiographic data from 26 pediatric Ross patients. A retrospective cohort study ...
Minett Geoffrey M - - 2012
This study examined the effects of pre-cooling duration on performance and neuromuscular function for self-paced intermittent-sprint shuttle running in the heat. Eight male, team-sport athletes completed two 35-min bouts of intermittent-sprint shuttle running separated by a 15-min recovery on three separate occasions (33°C, 34% relative humidity). Mixed-method pre-cooling was completed ...
Pinho Cleber A - - 2012
AIM: Physical exercise is important in the prevention and treatment of cardiovascular diseases. Nevertheless, controversy remains around type and intensity of effort required for significant biochemical protective changes. This study investigates two exercise protocols on ventricular oxidative parameters in rats post-infarction. MAIN METHODS: Thirty-six 2-month-old male Wistar rats were divided ...
Marshall Heather - - 2012
For many shark species, little information exists about the stress response to capture and release in commercial longline fisheries. Recent studies have used hematological profiling to assess the secondary stress response, but little is known about how, and to what degree, these indicators vary interspecifically. Moreover, there is little understanding ...
Kuroda Yasufumi Y Yasufumi Kuroda, Department of Public Health, Tokyo Women's Medical - - 2012
To better understand the role of motivation in determining exercise participation at the population level, we performed a questionnaire survey of 385 Japanese adults (mean age: 55.0 years, SD: 10.9 years). At baseline, the motivation subscales (intrinsic motivation, identified regulation, and external regulation), self-efficacy, and enjoyment all showed significant differences ...
Bailey Stephen J - - 2012
The purpose of this investigation was to determine the influence of heat stress on the dynamics of muscle metabolic perturbation during high-intensity exercise. Seven healthy males completed single-legged knee-extensor exercise until the limit of tolerance on two separate occasions. In a randomized order the subjects underwent 40 min of lower-body ...
Chirico Erica N - - 2012
The aim of this study was to analyze the effects of exercise training on oxidative stress in sickle cell trait carriers. Plasma levels of oxidative stress [advanced oxidation protein products (AOPP), protein carbonyl, malondialdehyde (MDA), and nitrotyrosine], antioxidant markers [catalase, glutathione peroxidase (GPX), and superoxide dismutase (SOD)], and nitrite and ...
Repossini Alberto - - 2012
OBJECTIVESThe present study investigates early clinical and haemodynamic results with the Freedom SOLO bioprosthesis (FSB) for aortic valve replacement (AVR) in eight Italian institutions.METHODSFrom 2004 to 2008, a total of 229 patients [139 females (60.7%); mean age 74 ± 8 years, left ventricular (LV) ejection fraction >40%] underwent AVR with FSB. One ...
Basha P Mahaboob - - 2012
Regardless of the circumstantial evidences on the involvement of fluoride on the etiology and pathogenesis of fluorosis, several lines of evidences strongly indicate the influence of modulator factors such as duration of fluoride exposure, age, temperature, and physical activity. This study has been designed to investigate the combined influence of ...
Scheer Bernd Volker - - 2012
ABSTRACT: This is the first report of a runner with myasthenia gravis who completed an ultra endurance event. Myasthenia gravis, a neuromuscular disease that usually results in skeletal muscle weakness, which worsens with exercise and strenuous aerobic exercise, is generally contraindicated. Our runner completed a 220-km, 5-day ultramarathon and presented ...
Davison Gareth W - - 2012
Even though intense exercise has traditionally been associated with a statistically significant accumulation of blood-borne biomarkers of free radical-mediated lipid peroxidation, it remains to be determined if the oxidative stress response is biologically significant. To examine biological significance, we calculated the critical difference of selected biomarkers of oxidants-antioxidants in the ...
Garatachea N - - 2012
We examined hormonal and haematological parameters and the profile of mood states (POMS) in top level judoists undertaking a 7-week competitive training period in a real contest. Participants were 10 top level judoists belonging to the Spanish National Team. Training load was calculated by multiplying the training session intensity by ...
Nikolaidis Michalis G - - 2012
Twenty males ran either on a level treadmill (nonmuscle-damaging condition) or on a downhill treadmill (muscle-damaging condition). Blood and urine samples were collected before and after exercise (immediately after, 1h, 4h, 24h, 48h, and 96h). The following assays were performed: F(2)-isoprostanes in urine, protein carbonyls in plasma, glutathione, superoxide dismutase, ...
Weber Maria Helena - - 2012
Heat shock protein 70 (HSP70) is a chaperone that maintains protein conformation during heat stress. It has recently been observed that HSP70 may be released from cells in response to increased energy demand (e.g., exercise) and/or oxidative stress. Since HSP70 levels should change in response to athletic training, we have ...
Miwa H - - 2012
Background  Care of patients with functional gastrointestinal disorders (FGIDs) commonly includes offering guidance on diet, exercise, and other lifestyle factors, but there is little information available on the actual lifestyles of FGID sufferers. Methods  An internet questionnaire survey of 15 000 adult members of the general public in Japan who were ...
Cholewa Jason M - - 2012
ABSTRACT: Regular exercise is recommended as part of cystic fibrosis (CF) physiotherapy. Exercise delays the development of pulmonary disease in CF patients; however, the cellular mechanisms responsible for these improvements are unclear. This review expands upon the hypothesis that exercise improves CF pathophysiological ion dysregulation via purinergic and adrenergic pathways ...
Head Denise D Washington University, Department of Psychology, Campus Box 1125, One Brookings Drive, St. Louis, MO 63130, USA. - - 2012
Chronic stress has well-documented negative effects on hippocampal structure and function, and has been suggested to contribute to age-related declines. In contrast, there is evidence that exercise has beneficial effects in older adults. The current investigation examined effects of lifetime stress on hippocampal volume and memory, the moderating role of ...
Donal Erwan - - 2012
BACKGROUND: Heart failure (HF) with a preserved (P) left ventricular (LV) ejection fraction (EF) is common, though its diagnosis and physiopathology remains unclear. We sought to analyse the myocardial characteristics at rest and during a sub-maximal exercise test in patients with HFPEF. METHODS AND RESULTS: Standardized sub-maximal exercise stress echocardiography ...
Jaisson Maxime - - 2012
INTRODUCTION: On account of its specific biodynamics, the disc joint located at the very heart of the joint can impact every constituent of the manducatory system. The disc is deformed when subjected to stresses exerted by the muscles of mastication which it partly absorbs and partly redistributes. MATERIALS AND METHODS: ...
Silveira Paulo Cesar Lock - - 2012
INTRODUCTION: The aim of the study was to evaluate the effects of TPU together with DMSO on oxidative stress parameters after eccentric exercise. METHODS: Thirty and six animals were divided in control; eccentric exercise (EE); EE+saline gel 0.9%; EE+TPU 0.8W/cm(2); EE+DMSO gel; EE+TPU+DMSO gel and submitted to one 90-min downhill ...
Romeih Soha - - 2012
OBJECTIVESIn patients with pulmonary atresia with intact ventricular septum (PAIVS), biventricular repair is considered to be the optimal treatment option in the absence of significant right ventricular (RV) hypoplasia. However, long-term clinical outcome studies are limited. We evaluated exercise capacity and cardiac function during pharmacological stress in children and young ...
Wingo Jonathan E - - 2012
ABSTRACT: Cardiovascular drift, the progressive increase in heart rate and decrease in stroke volume that begins after ~ 10 min of prolonged, moderate-intensity exercise, is associated with decreased maximal oxygen uptake, particularly during heat stress. Consequently, increased heart rate reflects increased relative metabolic intensity during prolonged exercise in the heat ...
Kiuchi T - - 2012
In animals, chronic stress leads to the development of depression-like behavior and decreases neurogenesis and blood vessel density in hippocampus, whereas antidepressants increase adult neurogenesis in hippocampus. Regular exercise training also has antidepressant action and increases hippocampal neurogenesis; however, whether exercise-induced antidepressant action is related to hippocampal microvasculature is unclear. ...
Loenneke Jeremy P - - 2012
Objectives: Exercise to failure results in similar muscle protein synthesis responses, independent of intensity. However, low-intensity exercise likely requires more time under tension and those with injuries may be incapable of sustaining the mechanical stress to reach failure. Design: The purpose was to determine whether elastic knee wraps (KW) provide ...
McLeay Yanita - - 2012
Exercise-induced muscle damage (EIMD) is accompanied by localized oxidative stress / inflammation which, in the short-term at least, is associated with impaired muscular performance. Dietary antioxidants have been shown to reduce excessive oxidative stress; however, their effectiveness in facilitating recovery following EIMD is not clear. Blueberries demonstrate antioxidant and anti-inflammatory ...
Olszowska Maria - - 2012
Dobutamine stress testing is an important non-invasive method for evaluating patients with known or suspected coronary artery disease who are unable to adequately exercise. We present a case of a paradoxical, progressive bradycardia occurring with increasing doses of dobutamine that resulted in stress test interruption. (Cardiol J 2012; 19, 1: ...
Paulsen Gøran - - 2012
Exercise-induced muscle damage is an important topic in exercise physiology. However several aspects of our understanding of how muscles respond to highly stressful exercise remain unclear In the first section of this review we address the evidence that exercise can cause muscle damage and inflammation in otherwise healthy human skeletal ...
Okudan N - - 2012
This study examined the combined effects of swimming training and coenzyme Q10 (CoQ10) supplementation on exhaustive exercise-induced oxidative stress in rat heart. The study was carried out with 4-month-old young adult male Wistar rats. Sixty four rats were divided mainly into two groups: trained and control. Each group was further ...
Yu Szu-Hsien - - 2012
Previous studies reported divergent results on nutraceutical actions and free radical scavenging capability of ginseng extracts. Variations in ginsenoside profile of ginseng due to different soil and cultivating season may contribute to the inconsistency. To circumvent this drawback, we assessed the effect of major ginsenoside-Rg1 (Rg1) on skeletal muscle antioxidant ...
Ramadan Mohamed Zaki - - 2012
Objective: Although respiratory device is an essential item to protect the wearer from hazardous gases and dust, it tends to increase heat load on the workers. The goal of this paper was to select the appropriate respiratory devices that can be used in a harsh weather under different work-loads. Methods: ...
1 2 3 4 5 6 7 8 9 10 >