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Index: December 2010
Clinical Focus:Respiratory Care
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December 2010
Clinical Focus: Respiratory Medicine
  • Asthma and the athlete
    • Vocal cord dysfunction
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    • Exercise-induced bronchospasm
  • COPD
    • Obesity and COPD
    • Relationship between COPD and nutrition intake
  • Treatment options for steroid-induced osteoporosis in men
  • Treatments for asthma
    • Bronchodilators, anticholinergics
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    • Metered-dose vs other types of inhalers
  • Respiratory infections in winter sports athletes
  • Asthma in elite athletes
  • Pulmonary rehabilitation and physical activity
  • Fitness and long-term oxygen therapy/lung transplantation
  • Airflow function and the metabolic syndrome
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doi: 10.3810/psm.2002.11.523
The Physician and Sportsmedicine: Volume 30: No.11
The Future of Performance-Enhancing Substances in Sport
Michael S. Bahrke, PhD; Charles E. Yesalis, MPH, ScD
Abstract: Athletes have used performance-enhancing substances (PESs) since ancient times, and still do.1 Testing during the 2000 Tour de France revealed the presence of various performance enhancers (drugs and supplements alike) in the urine of 45% of competitors who were tested.2 Furthermore, some of today's athletes use relatively simple medical techniques such as homologous and autologous blood transfusions to improve performance. Scientists may be inadvertently making it easier to circumvent drug tests by creating new delivery modalities such as patches and gels to administer "old" drugs such as testosterone. This method provides stable levels of the drug in the blood rather than the "spikes" that follow injections, and thus reduces the chance of positive tests.3


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