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Results 251 - 300 of 947
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Lindsay M Mitchell - - 2007
Studies on exercise-induced left ventricular hypertrophy (LVH) in veteran athletes suggest the presence of abnormal diastolic filling and incomplete regression of LVH on cessation of exercise. Hypothesis: Myocardial fibrosis occurs in exercise induced LVH in veteran athletes. To document non-invasively the presence of fibrosis in veteran athletes Prospective case-control study. ...
Walsh James C - - 2007
BACKGROUND: Heavy weight lifting using a squat bar is a commonly used athletic training exercise. Previous in vivo motion studies have concentrated on lifting of everyday objects and not on the vastly increased loads that athletes subject themselves to when performing this exercise. HYPOTHESIS: Athletes significantly alter their lumbar spinal ...
Aşçi Alper - - 2007
The purpose of this study was to compare 1 repetition maximum (1RM) strength, maximum power (MP), linear momentum (Mp), and the loads of 1RM responsible for maximum power (MP%) and for linear momentum (Mp%) generated in explosive concentric bench press (CBP) motion among athletes from different sports. A total of ...
Brooks M Alison - - 2007
PURPOSE: To determine the prevalence and predictors of preseason conditioning among high school athletes. METHODS: Cross-sectional survey of 451 high school athletes participating on girls and boys track and boys soccer teams in five public high schools in Seattle, WA, spring 2005. Questions were modified from validated surveys of physical ...
Whyte G - - 2007
Collapse after prolonged endurance exercise is common and usually benign. This case study reports a triathlete who suffered a vaso-vagal associated collapsed after exercise. Misdiagnosis of myocardial injury in the presence of elevated cardiac troponins and ECG anomalies led to inappropriate management and highlights the difficulty in treating the collapsed ...
Antonelli G - - 2007
OBJECTIVES: To examine an immunoassay for measuring free IGF-I in a saliva specimen (free sIGF-I) and to study the levels in relation to the training conditions comparing young athletes and sedentary females. DESIGN AND METHODS: The analysis was carried out by modifying a commercial kit for plasma matrix to measure ...
Ector Joris - - 2007
AIMS: Spontaneous or inducible sustained ventricular arrhythmias (VA) in endurance athletes frequently originate from the right ventricle (RV), even in the absence of familial arrhythmogenic RV cardiomyopathy (ARVC). The goal of this study was to determine whether the RV arrhythmogenic predilection in these patients is associated with RV functional abnormalities. ...
Knöpfli Bruno H - - 2007
AIM: To assess the progression of bronchial reactivity (BR) and incidence of bronchial hyperreactivity (BH), exercise-induced bronchoconstriction (EIB) and asthma in triathletes over 2 years. METHODS: Subjects were seven athletes from the Swiss national triathlon team (mean (SD) age 24.3 (4.8) years), who initially were not asthmatic, not treated with ...
Noakes Timothy D - - 2007
Athletes sometimes collapse either during or after exercise. Conditions that cause collapse during exercise may be life-threatening and account for 10-15% of all exercise-related medical encounters at endurance sporting events. These conditions are not always 'sports-specific' and are managed according to the usual clinical care guidelines. The majority (>85%) of ...
Fitzgerald Diarmaid - - 2007
This paper describes the design and development of a computer game for instructing an athlete through a series of prescribed rehabilitation exercises. In an attempt to prevent or treat musculoskeletal type injuries along with trying to improve physical performance, athletes are prescribed exercise programmes by appropriately trained specialists. Typically athletes ...
Nimmo M A - - 2007
Adequate nutrition before, during, and after training and competition is a key element to maintaining health. During both sprint and endurance exercise, the availability of glycogen is fundamental to performance and any deficit will lead to early fatigue. In addition, strategies to offset the negative effects of the products of ...
Shirreffs Susan M - - 2007
The diverse nature of the athletic events, together with the varied training programmes and individuality of athletes taking part, inevitably means that fluid needs are highly variable--between athletes, perhaps between training and competition, and with differing environmental conditions and degree of training and heat acclimatization. There are limited data from ...
Stein Dan J - - 2007
There is growing basic-science interest in the mechanisms underpinning the positive effects of exercise on brain function and cognitive-affective performance. There is also increasing clinical evidence that exercise may prevent and treat various neuropsychiatric disorders. At the same time, there is growing awareness that athletic performance is mediated in crucial ...
Banfi Giuseppe - - 2007
Sports anemia is a common risk for athletes. Intravasclar hemolysis is the principal source of an accelerated turnover of erythrocytes in sportsmen. The hemolysis induces some biochemical and hematological modifications; in particular, high concentrations of total and indirect (unconjugated) bilirubin could be reported in professional athletes. We recruited 24 rugby ...
Burrows Melonie - - 2007
It is now estimated that the prevalence of oral contraceptive use in athletic women matches that of women in the general population. The oral contraceptive pill (OCP) reduces cycle-length variability and provides a consistent 28-day cycle by controlling concentrations of endogenous sex hormones. The OCP is administered in three different ...
Bermon Stéphane - - 2007
Upper Respiratory Tract Infection (URTI) is regarded as the most common medical condition affecting both highly trained and elite athletes, in particular those participating in endurance events. The causes of these disturbances, also occurring during training, remain unclear. Viruses such as rhinovirus, adenovirus and para-influenza virus are frequently reported as ...
Toya Naoki - - 2007
Deep venous thrombosis (DVT) is common, but only 2%-4% of DVTs involve the upper extremities (Roos in Am J Surg 154:568-73, 1987). Upper extremity DVT has a primary or secondary cause, and primary thrombosis is much rarer than secondary thrombosis. Primary upper extremity DVT comprises effort venous thrombosis and idiopathic ...
Elliott Marcus C C W - - 2007
The development of power lies at the foundation of all movement, especially athletic performance. Unfortunately, training programmes of athletes often seek to improve cardiovascular endurance through activities such as distance training that are detrimental for the performance of power athletes, rather than using other means of exercise. Performance decrements from ...
Malinauskas B M - - 2007
PURPOSE: This study examined incidence of sport-related injury, interest in supplements to treat injury, and sources of supplement information among 145 college athletes (89 males, 56 females). MATERIALS AND METHODS: A survey was used to assess sport-related injuries, interest in three categories of supplements to treat injury, and sources of ...
Houtkooper Linda - - 2007
Throwers, jumpers, and combined events athletes require speed, strength, power, and a wide variety of technical skills to be successful in their events. Only a handful of studies have assessed the nutritional needs of such athletes. Because of this, recommendations for nutritional requirements to support and enhance training and competition ...
Volpe Stella Lucia - - 2007
Vitamins and minerals are necessary for many metabolic processes in the body and are important in supporting growth and development. Vitamins and minerals also are required in numerous reactions involved with exercise and physical activity, including energy, carbohydrate, fat and protein metabolism, oxygen transfer and delivery, and tissue repair. The ...
Atkinson Greg - - 2007
We review the literature on whether exercise is a synchroniser of human circadian rhythms, and highlight the specific methodological problems that are associated with this topic. In applied research, exercise has been investigated as a treatment for jet lag and shift-work problems. In these studies, there have been difficulties in ...
Kishali Necip Fazil - - 2006
The aim of this study was to examine the effects of menstrual cycle on female athletes' performance. Forty-eight teak-wondo athletes, 76 judoka, 81 volleyball, and 36 basketball players (total 241) elite athletes participated in the study. A questionnaire constituted from 21 questions about menstrual cycle applied. A one-way analysis of ...
Melanson Stacy E F - - 2006
Cardiac-related death has been reported following strenuous exercise, and biochemical markers predicting adverse outcomes would be useful. Despite the fact the myeloperoxidase (MPO) release may precede myocardial injury and identify at-risk patients earlier than traditional markers, information on the effects of marathon running on MPO levels is lacking. We measured ...
Riiser Amund - - 2006
Inhaled beta2-agonists are important therapeutic agents for the treatment of exercise-induced asthma in athletes but are restricted by international antidoping regulations. To investigate whether 18 mug of inhaled formoterol affects endurance performance during running at high altitudes until exhaustion among 20 nonasthmatic male athletes aged 21-35 yr. : In a ...
Esperer Hans D - - 2007
A 30-year-old male athlete with exercise-related syncopal symptoms spontaneously exhibited a type 1 Brugada ECG and was inducible during electrophysiology study. He was diagnosed with symptomatic Brugada syndrome and deemed at high risk of sudden cardiac death. Thus, he received a cardioverter/defibrillator and was advised to abstain from further competitive ...
Rosner Mitchell H - - 2007
Exercise-associated hyponatremia has been described after sustained physical exertion during marathons, triathlons, and other endurance athletic events. As these events have become more popular, the incidence of serious hyponatremia has increased and associated fatalities have occurred. The pathogenesis of this condition remains incompletely understood but largely depends on excessive water ...
Owoyele, BV; University of ...
The serum testosterone and heart rate responses to short strenuous physical exercise were studied in twenty-one non-athletic male students. The body mass index was also determined. Serum testosterone rose significantly (p<0.05) from 0.8±0.2 ng/ml to 1.7±0.2 ng/ml (273.5±100.2%, p<0.05). Likewise, the heart rate rose significantly from the resting value of ...
Le Faucheur Alexis - - 2006
PURPOSE: Exercise improves the diagnostic performance of ankle-to-brachial index (ABI) in the detection of exercise-induced arterial endofibrosis (EIAE). Pressure values for all four limbs are required to calculate ABI, but rapid systemic pressure changes occur during the recovery period from exercise. We checked whether after exercise, ABI calculated from simultaneous ...
Dane Senol - - 2006
The existing literature is controversial regarding the relationship between physical fitness and intraocular pressure (IOP). Therefore, the effects of acute submaximal exercise on IOP were compared in athletes and sedentary subjects. Acute exercise increased IOP in male athletes, but had no effect in sedentary men. Also, it decreased IOP in ...
Kilding A E - - 2006
AIM: The purpose of this study was to measure actual VO2max during the multi-stage fitness test (MSFT) and to compare this with predicted values obtained using previously established, commonly used methods. We also wanted to determine a new and more accurate regression equation for the prediction of VO2max in intermittent ...
Vaamonde D - - 2006
The purpose of this study on non-professional (recreational) athletes was two-fold: 1) to determine if endurance exercise (EE) routinely used by professional athletes would produce reproductive changes in the general population, and 2) to assess reversion. Short-term exhaustive endurance exercise (EEE) can produce alterations in the hypothalamic-pituitary-gonadal (HPG) axis with ...
Nielsen F H - - 2006
Magnesium is involved in numerous processes that affect muscle function including oxygen uptake, energy production and electrolyte balance. Thus, the relationship between magnesium status and exercise has received significant research attention. This research has shown that exercise induces a redistribution of magnesium in the body to accommodate metabolic needs. There ...
Barbier Juli - - 2006
Chronic physical training may induce morphological and useful functional adaptations which affect all cardiac chambers. Morphological modifications are mainly modest and far from pathologic ones. All these adaptations seem helpful for sport's performance. Hemodynamic and neurohumoral stresses depend on the muscular exercise type performed, static or dynamic. However, sports-specific adaptive ...
Rockafellow Bradley D - - 2006
Certain types of athletic involvement may confer risk for substance use by college students. This study investigated whether motivational factors play a role in the relationship between athletic involvement and substance use. Intercollegiate athletes (n=98) and exercisers (n=120) were surveyed about substance use and motivation for athletic involvement. Athletes and ...
Monchanin Geraldine - - 2007
The aim of the study was to examine the effects of exercise on soluble vascular cell adhesion molecule-1 (sVCAM-1) and intercellular adhesion molecule-1 (sICAM-1) in sickle cell trait (SCT) athletes with or without alpha-thalassemia. Six athletes with SCT, seven athletes with both SCT and alpha-thalassemia (SCTAT), and seven control athletes ...
Baume Norbert - - 2006
Anabolic androgenic steroids (AAS) are doping agents that are mostly used for improvement of strength and muscle hypertrophy. In some sports, athletes reported that the intake of AAS is associated with a better recovery, a higher training load capacity and therefore an increase in physical and mental performances. The purpose ...
Zanoletti Costanza - - 2006
The aim of this study was to examine the relationship between push-time and final race time in skeleton participants during a series of major international competitions to determine the importance of the push phase in skeleton performance. Correlations were computed from the first and second heat split data measured during ...
Bourdin Muriel - - 2006
INTRODUCTION: The purpose of this study was to test the influence of two types of maxillary mouthguards (a self-adapted and a custom-made model: SA and CM, respectively) on various physiological parameters generally associated with performance in team sports. METHODS: Nineteen trained male subjects participating in team sports were tested. Visual ...
Abellan R - - 2007
Erythropoietin (EPO) and soluble transferrin receptor (sTfR) in serum have been proposed as indirect biomarkers for the detection of recombinant human EPO (rhEPO) misuse in sport. The purpose of the present study was to investigate the influence of different levels of physical fitness, sport, different training workload during the sport ...
Stewart I B - - 2007
This study examined the effect of prolonged endurance exercise on the development of exercise-induced hypoxemia (EIH) in athletes who had previously displayed EIH during an incremental maximal exercise test. Five male and three female endurance-trained athletes participated. Susceptibility to EIH was confirmed through a maximal incremental exercise test and defined ...
Lawan A - - 2006
Measurement of QT dispersion as calculated from the 12-lead ECG has emerged as a non-invasive assessment for degree of myocardial inhomogeneity. Increased QT dispersion predicts sudden cardiac death in variety of disease states such as acute myocardial infarction and hypertrophic cardiomyopathy. To improve identification of athletes at high risk of ...
Mellalieu Stephen D - - 2006
The aim of this study was to examine whether self-confidence mediated the relationship between competitive anxiety intensity and direction. Elite (n = 102) and nonelite (n = 144) participants completed the self-confidence subscale of the Competitive Trait Anxiety Inventory-2 and the worry and somatic subscales from the Sport Anxiety Scale. ...
Whyte G P - - 2006
The case is reported of a male track and field athlete with breathing difficulties at rest and during exercise, which were exacerbated in the supine position and during water immersion. Right hemidiaphragmatic paralysis was diagnosed. The cause of this relatively benign disorder is not known and there are no serious ...
Stover Elizabeth A - - 2006
Urine specific gravity (USG) is used as an index of hydration status. Many studies have used USG to estimate pre-exercise hydration in athletes. However, very little is known about the pre-exercise hydration status of recreational exercisers. The purpose of the present study was to measure the pre-exercise USG in a ...
Uzel Murat - - 2006
PURPOSE: The aim of this study was to investigate the sonographic changes of heel fat pad thickness and compressibility index in healthy young adults in relation to level of athletic activity. MATERIALS AND METHODS: One hundred ten young adults (55 women and 55 men) with a body mass index between ...
Palisin Tenley E - - 2006
In athletics today, there is no shortage of participants looking for an extra edge in competition. In addition, there is no shortage of nutritional supplements for athletes to use with hopes of reaping ergogenic benefits. Ginseng is and will continue to be one of these supplements consumed by athletes despite ...
Chmielewski Terese L - - 2006
Plyometric exercise was initially utilized to enhance sport performance and is more recently being used in the rehabilitation of injured athletes to help in the preparation for a return to sport participation. The identifying feature of plyometric exercise is a lengthening of the muscle-tendon unit followed directly by shortening (stretch-shortening ...
Murray Robert - - 2006
The gut is an important athletic organ because it mediates water and nutrient uptake during exercise. But upper- and lower-gastrointestinal complaints, common to many athletes during exercise, can negatively impact performance, and in severe cases put health at risk. The gut is sensitive to water and nutrient intake during exercise ...
Reinking Mark F - - 2006
BACKGROUND: Exercise-related leg pain is a common complaint among athletes, but there is little evidence regarding risk factors for this condition in female collegiate athletes. PURPOSE: To examine prospectively the effect of selected extrinsic and intrinsic factors on the development of exercise-related leg pain in female collegiate athletes. STUDY DESIGN: ...
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