992 resultados para youth sports
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Doping with natural steroids can be detected by evaluating the urinary concentrations and ratios of several endogenous steroids. Since these biomarkers of steroid doping are known to present large inter-individual variations, monitoring of individual steroid profiles over time allows switching from population-based towards subject-based reference ranges for improved detection. In an Athlete Biological Passport (ABP), biomarkers data are collated throughout the athlete's sporting career and individual thresholds defined adaptively. For now, this approach has been validated on a limited number of markers of steroid doping, such as the testosterone (T) over epitestosterone (E) ratio to detect T misuse in athletes. Additional markers are required for other endogenous steroids like dihydrotestosterone (DHT) and dehydroepiandrosterone (DHEA). By combining comprehensive steroid profiles composed of 24 steroid concentrations with Bayesian inference techniques for longitudinal profiling, a selection was made for the detection of DHT and DHEA misuse. The biomarkers found were rated according to relative response, parameter stability, discriminative power, and maximal detection time. This analysis revealed DHT/E, DHT/5β-androstane-3α,17β-diol and 5α-androstane-3α,17β-diol/5β-androstane-3α,17β-diol as best biomarkers for DHT administration and DHEA/E, 16α-hydroxydehydroepiandrosterone/E, 7β-hydroxydehydroepiandrosterone/E and 5β-androstane-3α,17β-diol/5α-androstane-3α,17β-diol for DHEA. The selected biomarkers were found suitable for individual referencing. A drastic overall increase in sensitivity was obtained. The use of multiple markers as formalized in an Athlete Steroidal Passport (ASP) can provide firm evidence of doping with endogenous steroids.
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Blood pressure is lowered for a few hours after aerobic exercise, but also after resistance exercise, although for a shorter period of time. An exercise program can significantly lower resting and ambulatory BP measurements. Multiple mechanisms interact for the BP lowering effect, such as decreased total peripheral resistance, enhanced endothelial function, diminished sympathetic or rennin plasmatic activity, structural vascular modifications and baroreceptor reflex modulation. New exercises like eccentric or isometric (handgrip) contractions are promising. Resistance activities have long been considered dangerous for blood vessels because of increased arterial stiffness, but if the intensity remains moderate and aerobic exercises are integrated, then the effects are altogether beneficial.
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Référence bibliographique : Rol, 57046
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In this paper, we analyze working experiences of female sports journalists in the French-speaking Swiss daily press. We draw on Bourdieu's theory of habitus and field to examine how structures of power shape these journalists' lives. Based on 27 semistructured interviews and observations in the field, we found that women journalists' work experiences depend on the relationship between their position in the field and their ethos and hexis. We identified three main strategies through which the women journalists negotiated their experiences: (1) conforming to the dominant male ethos (2) threatening the orthodoxy (3) resisting while hijacking the assigned role.
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Other Audit Reports
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Bimonthly newsletter of the Iowa Gender-Specific Services Task Force. This issue discusses girls and the impact of involvement in sports and other physical activities.
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Other Audit Reports - Independent Auditor's Reports, Financial Statements, Schedule of Findings
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This article reviews the literature regarding gastrointestinal disturbances in particular in runners. The lower intestinal problems of motility and blood loss are discussed. These problems are directly related to running. These symptoms, especially diarrhea are common and can impact adversely both performance and the health of the athlete. Most cases are relatively benign. The sport medicine clinician should be familiar with the management of these problems in order to optimize the treatment and facilitate return to sport.
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Other Audit Reports
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Bimonthly newsletter of the Iowa Gender-Specific Services Task Force. This issue discusses girls and the impact of involvement in sports and other physical activities.
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This document contains two related, but separate reports. The Juvenile Crime Prevention Community Grant Fund Outcomes Report is a summary of outcomes from services and activities funded through the Juvenile Crime Prevention Community Grant Fund in FY2001. The Juvenile Justice Youth Development Program Summary describes Iowa communities current prevention and sanction programs supported with funding from the Division of Criminal and Juvenile Justice Planning (CJJP) during FY2002.
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This document contains two related, but separate reports. The Juvenile Crime Prevention Community Grant Fund Outcomes Report is a summary of outcomes from services and activities funded through the Juvenile Crime Prevention Community Grant Fund in FY 2001. The Juvenile Justice Youth Development Program Summary describes Iowa communities’ current prevention and sanction programs supported with funding from the Division of Criminal and Juvenile Justice Planning (CJJP) during FY 2002.
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This staff report on various factors regarding juvenile issues and crime was prepared by the Division of Criminal and Juvenile Justice Planning (CJJP). It was prepared to help the Juvenile Justice Advisory Council (JJAC) prepare their 3-Year Strategy as prescribed by the Juvenile Justice and Delinquency Prevention Act (JJDP Act).
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Bimonthly newsletter of the Iowa Gender-Specific Services Task Force. This issue discusses girls and the impact of involvement in sports and other physical activities.
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Bimonthly newsletter of the Iowa Gender-Specific Services Task Force. This issue discusses girls and the impact of involvement in sports and other physical activities.