Search Results
Results 551 - 600 of 1519
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Golovchiner Gregory - - 2011
BACKGROUND: Limited data suggest that optimal atrioventricular (AV) and interventricular (VV) delays are different at rest than during exercise in patients with heart failure. We assessed the feasibility and reproducibility of an electrogram-based method of optimization called QuickOpt at rest and during exercise. METHODS: Patients with a St Jude Medical ...
Higashimoto Yuji - - 2011
Background: Exertional dyspnea is the primary symptom that limits exercise in patients with chronic obstructive pulmonary disease (COPD). It is unknown which activated brain area is associated with this symptom in COPD patients. Objectives: To investigate the activation of cortical areas associated with dyspnea during exercise in COPD patients. Methods: ...
Herbst Jonathon - - 2011
  An 84-year-old woman is reported whose death was associated with strenuous exercise on an extremely hot day (maximum temperature = 43.1°C, 109.6°F). At autopsy there was evidence of exposure to high environmental temperatures with early putrefactive changes and mummification. There was underlying cardiomegaly with mild pulmonary emphysema. No significant injuries were ...
Tian Ye - - 2011
Abstract Background: This study investigated the changes in biomarkers of renal function and the corresponding estimated glomerular filtration rate (eGFR) in 10 male adolescent (16.2±0.6 years) trained runners during early and late recovery periods after an all-out 21-km run. Methods: Venous blood samples were taken immediately before, and at 2-h, 4-h, ...
Amano Tatsuro - - 2011
Aim:  The goals of this study were to investigate changes in the sweating and cutaneous vascular responses on the palm and the volar aspect of the index finger during sustained static exercise of increasing intensity and to determine whether the former can be attributed to altered sweat gland activity. Methods:  ...
Roelands Bart - - 2011
Caffeine, an adenosine receptor antagonist, has shown to improve performance in normal ambient temperature, presumably via an effect on dopaminergic neurotransmission through the antagonism of adenosine receptors. However, there is very limited evidence from studies that administered caffeine and examined its effects on exercise in the heat. Therefore, we wanted ...
McNeill Jeanette A - - 2011
This article describes the effect of individualized counseling using family history data and objective cardiovascular risk factors on intent to change and actual exercise behavior in a diverse sample of working adults. Using a longitudinal, quasi-experimental, crossover design, objective data (blood lipids, glucose, blood pressure, and body mass index) and ...
Leporace G - - 2011
Background The effectiveness of preventive training programs (PTP) aiming at changing the biomechanical behaviour related to anterior cruciate ligament injuries is subject to pre-existing risk. However, these assumptions are based on studies in females. Moreover, it is unclear what influence this training has on performance of young male athletes. Objective ...
Pope Lizzy - - 2011
The acceptability of a high-calorie-expenditure (HCE) exercise program in older coronary heart disease patients participating in a behavioral weight-control program was evaluated. Seventy-four overweight patients (median age 63 yr) were randomly assigned to a 5-mo intervention of HCE exercise (3,000-3,500 kcal/wk daily walking) or standard cardiac-rehabilitation (CR) exercise (700-800 kcal/wk). ...
Papapanagiotou A - - 2011
The aim of the present study was to evaluate the levels of homocysteine and 8-iso PGF(2a) in football and hockey players before and soon after a match, on the predisposition for development of atherosclerosis. We measured 8-iso-PGF(2a) and homocysteine in 21 football athletes aged 21.8 ± 3.7 years old and ...
Faramarzi Babak - - 2011
Objective-To quantify changes in hoof wall strain distribution associated with exercise and time in Standardbreds. Animals-18 young adult Standardbreds. Procedures-9 horses were exercised 4 d/wk for 30 to 45 minutes at a medium trot for 4 months; 9 nonexercised horses served as the control group. Rosette strain gauges were used ...
Marshall P W M - - 2011
The optimal volume of resistance exercise to prescribe for trained individuals is unclear. The purpose of this study was to randomly assign resistance trained individuals to 6-weeks of squat exercise, prescribed at 80% of a 1 repetition-maximum (1-RM), using either one, four, or eight sets of repetitions to failure performed ...
Poole Lydia L Department of Epidemiology and Public Health, University College London, London, UK. - - 2011
Mechanisms underlying the relationship between exercise and mood are not well understood. This study sought to investigate the role of pro- and anti-inflammatory cytokines and autonomic balance in determining the impact of exercise withdrawal on negative mood. Healthy men and women who regularly exercised (N = 26, mean age = 25.5 years, SD = 4.5 years) ...
Paton K R - - 2011
Adults of the Southern hemisphere lamprey Geotria australis were subjected to an exercise/recovery regime at the commencement and end of their 12-15 month non-trophic, upstream spawning migration. In early (immature) migrants and pre-spawning females, muscle glycogen was markedly depleted during exercise, but became rapidly replenished. As muscle lactate rose during exercise ...
Carlson Lara A LA Westbrook College of Health Professions, University of New England, 11 Hills Beach Road, Biddeford, ME 04005, USA. - - 2011
Various types of exercise alter the population of circulating peripheral blood mononuclear cells (PBMCs) and change their transcriptional output. This work examines changes in PBMC populations and transcription in response to resistance exercise training (RET), and identify key transcriptional changes in PBMCs that may play a role in altering peripheral ...
Kalapotharakos Vasilios I - - 2011
Kalapotharakos, VI, Ziogas, G, and Tokmakidis, SP. Seasonal aerobic performance variations in elite soccer players. J Strength Cond Res 25(X): 000-000, 2011-The purpose of this study was to examine the seasonal changes in body composition and aerobic performance in elite soccer players. Twelve elite professional soccer players (aged 25 ± ...
Shiiya Tomomi - - 2011
Ghrelin, an acylated peptide produced predominantly in the stomach, stimulates feeding and growth hormone (GH) secretion via interaction with the GH secretagogue receptor. Ghrelin molecules are present in two major endogenous forms, an acylated form (ghrelin) and a des-acylated form (des-acyl ghrelin). Recent studies indicated that aerobic exercise did not ...
Park Kyung-Shin - - 2011
The purposes of this study were to determine the effect of eccentric exercise-induced muscle damage on the induction of apoptosis in peripheral blood leukocytes and to investigate if the elevation in apoptotic leukocytes was mediated by changes in the concentration of anti-/pro-apoptotic proteins in circulation. Twelve moderately trained subjects performed ...
Read S A - - 2011
The aim of this study is to investigate the short-term influence of a period of dynamic exercise on axial length (AXL) and intraocular pressure (IOP) in young adult subjects. In all, 20 young adult subjects (10 myopes and 10 emmetropes) participated. Baseline measures of ocular biometrics, IOP and ocular pulse ...
Skovbro Mette - - 2011
Twenty one healthy untrained male subjects were randomized to follow a high fat diet (HFD) (55-60E% fat, 25-30E% carbohydrate and 15E% protein) or a normal diet (ND) (25-35E% fat, 55-60E% carbohydrate and 10-15E% protein) for 2 1/2 wk. Diets were isocaloric and tailored individually to match energy expenditure. At 2 ...
Elmer S - - 2011
Previous authors have reported that chronic eccentric cycling facilitates greater changes in multi-joint leg function (hopping frequency, maximum jumping height) compared with concentric cycling. Our purpose was to evaluate changes in leg spring stiffness and maximum power following eccentric and concentric cycling training. Twelve individuals performed either eccentric (n=6) or ...
Janecki Damian - - 2011
Objectives: The purpose of this study was to assess if the protective adaptation after eccentric exercise affects changes in passive stiffness of the biceps brachii muscle. Design: A within-group repeated measures design was used to compare changes in passive muscle stiffness after eccentric exercise between the first and second bouts ...
Csapo Robert - - 2011
Objectives: The study aimed to assess acute changes in muscle architecture and its recovery after exhaustive exercise. We hypothesised that repetitive leg press exercise would decrease vastus lateralis fascicle length, while increasing both muscle thickness and pennation angles. By investigating the time kinetics of recovery of these parameters, we wished ...
Marrin K - - 2011
Salivary melatonin concentration is an established marker of human circadian rhythmicity. It is thought that melatonin is relatively robust to the masking effects of exercise. Nevertheless, the extent and even the direction of exercise-related change is unclear, possibly due to between-study differences in the time of day exercise is completed. ...
Scofield Dennis Edward - - 2011
This study tested the hypothesis that transdermal fluid (TDF) is more sensitive than serum to exercise-induced increases in insulin-like growth factor-I (IGF-I) concentration, and that these increases would be evident proximal, but not distal, to the exercising muscle. A novel, non-invasive methodology was used to collect TDF for analysis. TDF ...
Bunn Elizabeth A - - 2011
Individuals with low back pain (LBP) have been shown to demonstrate decreased quadriceps activation following lumbar paraspinal fatigue. The response of other lower extremity muscles is unknown. The purpose of this study was to determine changes in motoneuron pool excitability of the vastus medialis, fibularis longus, and soleus following lumbar ...
Hill-Haas Stephen V - - 2011
Small-sided games (SSGs) are played on reduced pitch areas, often using modified rules and involving a smaller number of players than traditional football. These games are less structured than traditional fitness training methods but are very popular training drills for players of all ages and levels. At present, there is ...
Yasuda Tomohiro - - 2011
We investigated the combined effect of low-intensity blood flow restriction and high-intensity resistance training on muscle adaptation. Forty young men (aged 22-32 years) were randomly divided into four groups of ten subjects each: high-intensity resistance training (HI-RT, 75% of one repetition maximum [1-RM]), low-intensity resistance training with blood flow restriction (LI-BFR, ...
Kluding Patricia M PM Department of Physical Therapy and Rehabilitation Science, University of Kansas Medical Center, Kansas City, KS 66160, USA. - - 2011
Emerging evidence suggests that exercise may improve cognitive function in older adults. The purpose of this pilot study was to describe changes in measures of cognition and executive function in individuals with chronic stroke following participation in aerobic and strengthening exercise. A single-group, pretest-posttest design was used. Nine individuals with ...
Wheatley K - - 2011
Hypobaric hypoxia is associated with an increase in erythropoesis and an increased thrombotic risk. This is true of long haul air travel, mountaineering expeditions and longer stays at altitude. Studies looking at clotting on mountaineering expeditions are further complicated by the effects of exercise, plasma volume changes and the catecholamine ...
Parker Beth - - 2011
Air travel and exercise change hemostatic parameters. This study investigated the effect of air travel on exercise-induced coagulation and fibrinolysis in endurance athletes. A prospective longitudinal study. The 114th Boston Marathon (April 19, 2010). Forty-one adults were divided into travel (T: 23 participants, living >4-hour plane flight from Boston) and ...
ZieliƄski Jacek - - 2011
There are no studies analyzing the effect of training loads on purine metabolism during long training periods. PURPOSE:: To evaluate the effect of training load changes and subsequent detraining on purine metabolism in middle-distance runners during a 1-year cycle. METHODS:: In four characteristic points of the training cycle, loads assigned ...
Silva Bruno M - - 2011
PURPOSE:: There is large inter-individual variation in the parasympathetic adaptation induced by aerobic exercise training, which may be partially attributed to genetic polymorphisms. Therefore, we investigated the associationamong three polymorphisms in the endothelial nitric oxide (eNOS) gene (-786T>C, 4b4a and 894G>T), analyzed individually and as haplotypes, and the parasympathetic adaptation ...
Kopp Renate - - 2011
Exercise as well as hypoxia cause an increase in angiogenesis, changes in mitochondrial density and alterations in metabolism, but it is still under debate whether the hypoxia inducible factor (HIF) is active during both situations. In this study gene expression analysis of zebrafish larvae which were raised under normoxic, hypoxic ...
Morio Cédric - - 2011
This study analysed the time course of neuro-mechanical changes underlying stretch-shortening cycle during intermittent exhaustive rebound exercise. On a sledge apparatus, ten subjects repeated until exhaustion a series of 30 unilateral submaximal rebounds, with intermediate 3-min rest periods. Rebound height, ground reaction force, 3D tibial acceleration and electromyographic activity of ...
Muthalib Makii - - 2011
This study investigated biceps brachii oxygenation and myoelectrical activity during and following maximal eccentric exercise to better understand the repeated-bout effect. Ten men performed two bouts of eccentric exercise (ECC1, ECC2), consisting of 10 sets of 6 maximal lengthening contractions of the elbow flexors separated by 4 wk. Tissue oxygenation ...
Rønnestad Bent R - - 2011
The purpose of this study was to determine the influence of transiently elevated endogenous hormone concentrations during exercise on strength training adaptations. Nine subjects performed four unilateral strength training session per week on the elbow flexors for 11 weeks. During two of the weekly sessions, leg exercises were performed to ...
Rasmussen Martin Krøyer - - 2011
It is investigated if exercise induced mRNA changes cause similar protein expression changes of Na(+), K(+) pump isoforms (α1, α2, β1, β2), FXYD1 and NHE1 in rat skeletal muscle. Expression was evaluated (n=8 per group) in Soleus and EDL after 1 day, 3 days and 3 weeks (5 sessions per ...
Reding Kerryn W KW University of Washington, Seattle, WA 98195, - - 2011
Many studies have investigated the immediate impact of physical activity on prolactin concentrations; however, it is currently unclear what impact exercise may have on prolactin concentrations in the long-term, particularly among women. Understanding the role of exercise on prolactin is important because epidemiologic studies have reported increased risks of breast ...
Klonizakis Markos - - 2011
Objectives Microvascular integrity is compromised by several diseases and conditions as well as age. Exercise can reverse these effects but it is unclear whether these are systemic or localised, or which mechanisms are responsible for observed improvements Therefore, the primary objective of this study was to assess whether arm-cranking exercise ...
Conner Mark - - 2011
Two studies investigated the impact of affective and cognitive messages compared to a no-message control on self-reported exercise. Students (Study 1, N = 383 and Study 2, N = 197) were randomly allocated to one of the three conditions (control - no message, affective message or cognitive message). Participants completed ...
Stickford Jonathon L - - 2011
Conjugated linoleic acid (CLA) has been reported to modify the inflammatory response associated with allergic airway disease, primarily in animal models. To extend these observations to humans, the effect of short-term CLA supplementation on the severity of exercise-induced bronchoconstriction (EIB) was investigated in asthmatics. Six subjects with physician-diagnosed asthma and ...
Kerr Abigail L - - 2011
Long-term aerobic exercise improves cognition in both human and nonhuman animals and induces plastic changes in the central nervous system (CNS), including neurogenesis and angiogenesis. However, the early and immediate effects of exercise on the CNS have not been adequately explored. There is some evidence to suggest that exercise is ...
Van Hecke Ann - - 2011
Examining the (experienced) changes associated with a nursing intervention to enhance adherence to leg ulcer lifestyle advice. Few interventions to enhance adherence to leg ulcer treatment are developed and tested. Qualitative evaluation approach and pre-post-test design were used. Twenty-six patients with venous ulcers in a community care setting participated. Data ...
Skurvydas Albertas - - 2011
Skurvydas, A, Brazaitis, M, and Kamandulis, S. Muscle-damaging exercise affects isokinetic torque more at short muscle length. J Strength Cond Res 25(X): 000-000, 2011-The aim of this study was to investigate the differences in the length-dependent changes in quadriceps muscle torque during voluntary isometric and isokinetic contractions performed after severe ...
Djordjevic Dusica - - 2011
Although exercise-induced oxidative stress receives considerable scientific attention, there is still little information available regarding exercise-induced adaptations of the antioxidant defence system in adolescent and child athletes. The aim of our study was to establish the effects of long-term exercise training on the redox state of adolescents, and to find ...
Weston Matthew - - 2011
The aim of the present study was to examine the relationship between intensities of exercise during match-play of elite-standard soccer referees with those of the players from the same match. Match analysis data were collected (Prozone® Leeds, UK) for 18 elite-standard soccer referees (age 26-49 years) on FA Premier League ...
Gardner Andrew W AW CMRI Diabetes and Metabolic Research Program, Harold Hamm Oklahoma Diabetes Center, Oklahoma University Health Sciences Center, 1122 NE 13th Street, Oklahoma City, OK 73117, USA. - - 2011
This prospective, randomized, controlled clinical trial compared changes in exercise performance and daily ambulatory activity in peripheral artery disease patients with intermittent claudication after a home-based exercise program, a supervised exercise program, and usual-care control. Of the 119 patients randomized, 29 completed home-based exercise, 33 completed supervised exercise, and 30 ...
Roessler Kirsten Kaya - - 2011
The objective of the present study was to examine psychological aspects of intra- and interpersonal learning for patients with Type 2 diabetes, hypertension and dyslipidemia treated with Exercise on prescription. The research design consists of a qualitative investigation of 30 patients in Denmark undergoing a community-based exercise treatment at baseline, ...
Dartnall Tamara Jade - - 2011
The purpose of this study was to examine changes in motor unit activity in the biceps brachii muscle after an initial (Bout 1) and repeated (Bout 2) session of eccentric exercise separated by 1 week. Eight subjects (age, 22 ± 2 yrs) participated in experimental assessments of neuromuscular function obtained ...
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