Search Results
Results 151 - 200 of 947
1 2 3 4 5 6 7 8 9 10 >
Yan Bei - - 2009
Strength-endurance type of sport can lead to modification of human beings' physiological status. The present study aimed to investigate the alteration of metabolic phenotype or biochemical compositions in professional athletes induced by long-term training by means of a novel systematic tool, metabolomics. Resting venous blood samples of junior and senior ...
Schwellnus M P - - 2009
Exercise Associated Muscle Cramps (EAMC) is one of the most common conditions that require medical attention during or immediately after sports events. Despite the high prevalence of this condition the aetiology of EAMC in athletes is still not well understood. The purpose of this review is to examine current scientific ...
Bautista-Hernández V M - - 2008
The aim of this study was to determine the effect of thiamine pyrophosphate (TPP) on serum lactate levels, maximum oxygen consumption (Vo(2max)) and heart rate in male athletes performing aerobic activity. A double-blind, randomized, crossover study was performed in which lactate levels, Vo(2max) and heart rates in 27 male athletes ...
Wolanczyk-Medrala Anna - - 2008
A few studies have reported data on the prevalence of exercise-induced bronchospasm in high school and university athletes. Recently published data suggest that exercise-induced bronchospasm may affect up to 39% of American university athletes. To date, no data describing this pathology in athletes from Central Europe have been published. The ...
Caruso John F - - 2008
A high-speed, low-resistance inertial exercise trainer (IET, Impulse Training Systems, Newnan, Ga) is increasingly employed in rehabilitative and athletic performance settings. Repetitions on an IET are done through a large range of motion because multijoint movements occur over more than one plane of motion, with no limitation on velocities or ...
Nicks C R - - 2009
The purpose of this study was to determine the effect of respiratory muscle training (RMT) on intermittent exercise performance, respiratory muscle strength (PI (max)), respiratory muscle fatigue (RMF), and dyspnea in soccer athletes. Collegiate soccer athletes (20 male, 7 female) were randomly divided into either a RMT or control condition ...
Moreira Alexandre - - 2008
This investigation examined the impact of a 17-d training period (that included basketball-specific training, sprints, intermittent running exercises, and weight training, prior to an international championship competition) on salivary immunoglobulin A (SIgA) levels in 10 subjects (athletes and staff members) from a national basketball team, as a biomarker for mucosal ...
Denguezli Myriam - - 2008
The aim of this study was to determine whether endurance training in athletes induces airway inflammation and pulmonary function disorders. Respiratory pattern and function were analysed in ten healthy endurance runners at rest, during sub-maximal exercise, and during the recovery. Inflammatory cells and metabolites (histamine, interleukin-8, and leukotriene E(4)) were ...
Wang Robert Y - - 2008
Acute traumatic anterior shoulder dislocation is a relatively common occurrence in the athletic population. Although the overall incidence of traumatic shoulder instability in the general population is only 1.7%, the incidence in a high physical-demand population is two-fold greater. Instability often becomes a recurrent pattern and jeopardizes athletic performance and ...
Cinar Vedat - - 2009
The present study was performed to investigate the effects of strenuous exercise and calcium supplementation on cortisol and adrenocorticotropic hormone levels in athletes at rest and exhaustion. Thirty male athletes, ages 17-21 years, were enrolled in the 4-week study. They were divided into three groups as follows: group 1 (n ...
Kenanidis Eustathios - - 2008
STUDY DESIGN: Cross-sectional observational study. OBJECTIVE: Evaluation and comparison of the prevalence of adolescent idiopathic scoliosis (AIS) among 2 groups of patients (athletes and nonathletes) to determine whether athletic activities are related to the development of AIS. SUMMARY OF BACKGROUND DATA: The potential association between AIS and exercising remains uncertain. ...
Fox Zachary G - - 2008
With regard to sideline concussion testing, the effect of fatigue associated with different types of exercise on postural control is unknown. To evaluate the effects of fatigue on postural control in healthy college-aged athletes performing anaerobic and aerobic exercise protocols and to establish an immediate recovery time course from each ...
Popa T - - 2008
Among athletes, elite springboard divers (ED) should develop an optimal anticipatory control of postural stability, as a result of specific training. Postural strategies of ED and healthy subjects (HS) while expecting an impending perturbation were compared. The mean center of pressure (COP) position was analyzed during control quiet stance (cQS) ...
Geertsema Liesel - - 2011
Soluble CD40 ligand (sCD40L) is a powerful marker of cardiovascular risk. Exercise is known to decrease cardiovascular risk, but the impact of ultra-endurance exercise on sCD40L responses is unknown. To examine the relationship between ultra-endurance exercise in trained athletes and levels of sCD40L and its natural ligand sCD40. Control-trial, crossover ...
Meeusen R - - 2010
In this work, whether a two-bout exercise protocol can be used to make an objective, immediately available distinction between non-functional over reaching (NFO) and overtraining syndrome (OTS) was studied. Underperforming athletes who were diagnosed with the suspicion of NFO or OTS were included in the study. Recovery of the athletes ...
Whyte Gregory P - - 2008
Acute bouts of ultraendurance exercise may result in the appearance of biomarkers of cardiac cell damage and a transient reduction in left ventricular function. The clinical significance of these changes is not fully understood. There seems to be two competing issues to be resolved. First, could prolonged endurance exercise produce ...
Montain Scott J - - 2008
Fluid replacement remains an important strategy for preserving exercise performance as dehydration in excess of 2% of body weight consistently impairs aerobic exercise performance. Too much of a good thing, however, can have negative health consequences as persistent drinking in excess of sweating rate can induce symptomatic exercise associated hyponatremia. ...
McNaughton Lars R - - 2008
Athletes use many different strategies to enhance their performance, including clothing and footwear, training regimes, diets, and ergogenic aids. The use of ergogenic aids is believed to be widespread, with a variety of legal as well as illegal substances being used previously and currently. Among the more popular ergogenic aids ...
Triscott Simon - - 2008
The effect of long-term endurance and resistance training on central fatigue has been studied using transcranial magnetic stimulation by exercising the biceps brachii to exhaustion and recording motor-evoked potentials from the non-exercised homologous biceps. Three groups of eight healthy individuals took part: two groups of individuals who had more than ...
Magalski Anthony - - 2008
OBJECTIVES: The purpose of this study was to establish an electrocardiographic (ECG) profile in a biracial population of highly-trained American football players. BACKGROUND: Intense physical training can induce cardiac structural and functional changes ("athlete's heart"), including 12-lead ECG alterations. That race might play a role in determining ECG patterns has ...
Duraković Zijad - - 2008
In the period 1998-, we registered four sudden and unexpected cardiac deaths in male athletes due to myopericarditis during or after physical exercise. Three of them were professional soccer players and the fourth was engaged in swimming. One aged 29, had symptoms of tiredness, heart enlargement and left ventricular premature ...
Fudge Barry W - - 2008
Previous studies of elite Kenyan endurance runners reported that athletes did not consume liquids before or during training and infrequently consumed modest amounts of liquids after training that contributed to low daily fluid intake. PURPOSE: To assess hydration status of elite Kenyan endurance runners during an important training period. METHODS: ...
Haahtela T - - 2008
Athletes' symptoms may only occur in extreme conditions, which are far from normal. Exercise may increase ventilation up to 200 l/min for short periods in speed and power athletes, and for longer periods in endurance athletes such as swimmers and cross-country skiers. Increasing proportions of young athletes are atopic, i.e. ...
Cardinale Marco - - 2008
The use of vibration as a training intervention has been suggested for more than a decade. Following the initial promising studies, a large number of investigations have been conducted to understand the acute and chronic effects of this novel training modality mainly using special populations, sedentary, physically active, and aged ...
Spedding M - - 2008
This article, by the United Kingdom's last Olympic Marathon Medal winner, Charlie Spedding, and his brother, the pharmacologist, Michael Spedding, covers the difficulties posed by the availability of powerful drugs to ameliorate athletic performance, from an athlete's perspective, particularly in view of the fact that performances are becoming highly optimised ...
Lippi G - - 2008
The Beijing Olympics will begin in August 2008 and athletes will face an unpredictable challenge. Based on present data, Beijing is one of the most polluted megacities in the world; the air concentrations of carbon monoxide (CO), ozone, nitrogen oxides (NO and NO2), sulphur dioxide (SO2) and particulate matter approach ...
Serra-Grima R - - 2008
The aim of the study was to examine the hypothesis that when former high-level athletes retired from competition, bradycardia would vanish. ECG changes and factors possibly related to the persistence of bradycardia were investigated. We performed a longitudinal follow-up study in 157 former elite athletes who had records of bradycardia ...
Swanson Don R - - 2008
Using a previously described approach to generating novel medical hypotheses, this paper shows how two separate medical literatures taken together can suggest new information not apparent in either literature alone. Many studies have demonstrated that aerobic exercise in healthy people can induce esophageal acidic reflux that increases with the duration ...
Rong Cui - - 2008
OBJECTIVE: Previous studies have demonstrated that exercise-induced asthma and bronchial hyperresponsiveness commonly occur in athletes. The present study investigates pulmonary function and cytokine levels in professional athletes to explore the impact of various sports on respiratory system function and to evaluate the possible role of systemic anaphylaxis. METHODS: Lung function ...
Lippi Giuseppe - - 2008
OBJECTIVE: The interpretation of biochemical testing in sportsmen requires caution. Although creatinine-based estimates of glomerular filtration rate (GFR) overcome some shortcomings of serum creatinine, there is scarce information on their use in endurance athletes. DESIGN: We evaluated GFR, estimated by the recommended Modification of Diet in Renal Disease (MDRD) equation ...
Radkowski Christopher A - - 2008
BACKGROUND: There are limited studies evaluating arthroscopic treatment of unidirectional posterior shoulder instability in overhead-throwing athletes. HYPOTHESIS: Arthroscopic capsulolabral repair for unidirectional posterior shoulder instability will yield equivalent stability and functional outcomes in the overhead-throwing athlete and nonthrowers. STUDY DESIGN: Cohort study; Level of evidence, 2. METHODS: Ninety-eight athletes (107 ...
Smith Roger K W - - 2008
Horses as equine athletes must be conditioned and trained to optimize the whole animal for the particular type of athletic activity. An extremely high proportion of all injuries in the equine athlete in general, and in the racehorse in particular, are associated with the skeletal system, many of which are ...
Sharashidze N - - 2008
Present work was aimed to study QT dispersion changes during exercise and relation of it with LV myocardium mass in veteran elite athletes. 31 veteran athletes aged 30-50 years and 31 age-matched healthy controls were studied. In all of them QT dispersion (QTd) at rest and during exercise test was ...
Sun Jeremy M F - - 2008
INTRODUCTION: The aim of this study is to investigate the amount of water loss and percentage dehydration experienced during 1 hour of paddling on the kayak ergometer so as to help coaches and athletes tailor a suitable and adequate rehydration regime. Also, rehydration efficacy between water and a well established, ...
Beaven C Martyn - - 2008
Our previous work has demonstrated that professional athletes show protocol-dependent variability in salivary testosterone (T) responses to resistance exercise (RE). The current study examines the consistency and functional outcomes of prescribing a RE regimen based on T response. We hypothesized that prescribing an individual-specific RE protocol based on T response ...
Schiller Jonathan R - - 2008
Exercise and athletic competition for the young individual has become increasingly more important in society. Scoliosis and Scheurmann kyphosis are spinal deformities prevalent in up to 2% to 3% and 7% of the population respectively, requiring nonoperative and occasionally operative treatment. Curve progression and patient physiologic age dictate treatment regimens. ...
Rognmo Oivind - - 2008
Exercise training reverses endothelial dysfunction, but the effect in young, healthy subjects is less clear. We determined the influence of maximal oxygen uptake (VO2max) and a single bout of high-intensity exercise on flow-mediated dilatation (FMD), brachial artery diameter, peak blood flow, nitric oxide (NO) bioavailability, and antioxidant status in highly ...
Tallarico Richard A - - 2008
Spondylolysis and spondylolisthesis are common diagnoses made in the athlete suffering from persistent back pain. Although the etiology of this continuum of conditions is uncertain, genetic predisposition and repetitive trauma have been strongly implicated. Sports in which participants are subjected to repetitive hyperextension across the lumbar spine pose a risk ...
Furlanello Francesco - - 2008
INTRODUCTION: Atrial fibrillation (AF) may occasionally affect athletes by impairing their ability to compete, and leading to noneligibility at prequalification screening. The impact of catheter ablation (CA) in restoring full competitive activity of athletes affected by AF is not known. The aim of our study was to investigate the effectiveness ...
Hernelahti M - - 2008
In 2005, the European Society of Cardiology published recommendations for cardiovascular screening in athletes. Discussion on whether screening is beneficial is ongoing. Recently, the first prospective results on effectiveness of screening in preventing sudden deaths were published from Italy. The results were supportive of screening, but did not provide conclusive ...
Rabita Giuseppe - - 2008
The aim of this study was to characterize the influence of intrinsic musculotendinous and musculoarticular stiffness of plantarflexor muscles on (1) the overall musculoskeletal stiffness and (2) the performance during stretch-shortening cycles-type exercise. The influence of plyometric training background on these relationships was also analyzed. Musculotendinous (SIMT), passive (KP) and ...
Bangsbo Jens - - 2008
The two Yo-Yo intermittent recovery (IR) tests evaluate an individual's ability to repeatedly perform intense exercise. The Yo-Yo IR level 1 (Yo-Yo IR1) test focuses on the capacity to carry out intermittent exercise leading to a maximal activation of the aerobic system, whereas Yo-Yo IR level 2 (Yo-Yo IR2) determines ...
Sofi Francesco - - 2008
To evaluate the clinical usefulness of complete preparticipation cardiovascular screening in a large cohort of sports participants. Cross sectional study of data over a five year period. Institute of Sports Medicine in Florence, Italy. 30,065 (23,570 men) people seeking to obtain clinical eligibility for competitive sports. Results of resting and ...
Naylor Louise H - - 2008
As early as 1975, Morganroth and colleagues hypothesized that the cardiac morphological adaptation observed in athletes corresponded with the nature of the haemodynamic stimulus imposed on the ventricles during repeated exercise bouts. Endurance training purportedly leads to an eccentric form of cardiac hypertrophy, principally characterized by increased left ventricular (LV) ...
Warren Michelle P - - 2008
Female participation in high school athletics has increased 800% in the last 30 years. The problem of exercise-induced amenorrhea was initially thought to be analogous to hypoestrogenism, but recent studies suggest that nutritional issues underlie most of the pathophysiology and that the mechanism is different from that seen in the ...
Litchke Lyn G - - 2008
BACKGROUND/OBJECTIVE: To determine the effect of respiratory resistance training (RRT) with a concurrent flow respiratory (CFR) device on respiratory function and aerobic power in wheelchair athletes. METHODS: Ten male wheelchair athletes (8 with spinal cord injuries, 1 with a neurological disorder, and 1 with postpolio syndrome), were matched by lesion ...
Wang Pei - - 2008
In the decade since the angiotensin-converting enzyme (ACE) gene was first proposed to be a 'human gene for physical performance', there have been numerous studies examining the effects of ACE genotype on physical performance phenotypes such as aerobic capacity, muscle function, trainability, and athletic status. While the results are variable ...
Michielsen Etienne C H J - - 2008
Over the past 2 decades, there has been a large interest in cardiac troponin T (cTnT) elevations, which are often seen following endurance sport events. There have been many reports on this topic, although sometimes with different approaches. We reviewed the available literature on cTnT elevations after prolonged strenuous exercise ...
Abbiss Chris R - - 2008
It is widely recognized that an athlete's 'pacing strategy', or how an athlete distributes work and energy throughout an exercise task, can have a significant impact on performance. By applying mathematical modelling (i.e. power/velocity and force/time relationships) to athletic performances, coaches and researchers have observed a variety of pacing strategies. ...
De Mozzi Paola - - 2008
The bicuspid aortic valve (BAV) is the most common congenital cardiac malformation. A literature search was performed using the key words 'bicuspid aortic valve', 'pathophysiology', 'exercise' and 'training'. BAV is the result of a complex developmental process where several genes seem to lead to abnormal valvulogenesis. Complications associated with BAV ...
1 2 3 4 5 6 7 8 9 10 >