Literature DB >> 16556795

Use of beta2 agonists in sport: are the present criteria right?

J Naranjo Orellana1, R A Centeno Prada, M D Carranza Márquez.   

Abstract

BACKGROUND: The regulations for doping control prohibit the use of beta2 agonist bronchodilators (salbutamol, salmeterol, formoterol, and terbutaline) unless the subject follows the procedure known as abbreviated therapeutic use exemption (ATUE).
OBJECTIVE: To highlight how the interest in discovering possible cheats may result in damage to athletes who really need bronchodilator treatment.
METHODS: Thirty one high level athletes (18 men and 13 women) with a previous diagnosis of asthma were examined in our laboratory in order to obtain an ATUE for beta2 agonists. All the subjects underwent spirometry at rest. If the results were normal, the subjects underwent an effort test and, if negative, a methacholine test inhaling progressive doses of methacholine until a fall of 20% in forced expiratory volume in one second (FEV1) was achieved. The international anti-doping regulations require that the fall in FEV1 occurs with a concentration of methacholine (PC20) lower than 2 mg/ml (4 mg/ml for Torino 2006). In clinical practice, a test is positive if the response occurs with a PC20 lower than 8 mg/ml.
RESULTS: Only one subject met the criterion for the bronchodilation test at rest. The remaining 30 athletes underwent an effort test, which was positive in nine of them. In 21 cases (13 men and 8 women) the effort test was negative so a methacholine test was carried out. Seven (33%) were negative for ATUE with a PC20 higher than 8 mg/ml, seven (33%) were positive for ATUE with a PC20 less than 2 mg/ml, in four (19%) the PC20 was 2-4 mg/ml, and in three (14%) it was 4-8 mg/ml.
CONCLUSIONS: Strict vigilance of fair play should be pursued, but excessive control can lead to situations of inequality for asthmatic athletes such that a third of athletes cannot be treated with beta2 agonists. Therefore under current regulations, asthmatic athletes are often denied the most effective therapeutic option.

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Year:  2006        PMID: 16556795      PMCID: PMC2577544          DOI: 10.1136/bjsm.2005.024513

Source DB:  PubMed          Journal:  Br J Sports Med        ISSN: 0306-3674            Impact factor:   13.800


  19 in total

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3.  Risk factors for airway remodeling in asthma manifested by a low postbronchodilator FEV1/vital capacity ratio: a longitudinal population study from childhood to adulthood.

Authors:  Finn Rasmussen; D Robin Taylor; Erin M Flannery; Jan O Cowan; Justina M Greene; G Peter Herbison; Malcolm R Sears
Journal:  Am J Respir Crit Care Med       Date:  2002-06-01       Impact factor: 21.405

4.  Responses to bronchial challenge submitted for approval to use inhaled beta2-agonists before an event at the 2002 Winter Olympics.

Authors:  Sandra D Anderson; Kenneth Fitch; Clare P Perry; Malcolm Sue-Chu; Robert Crapo; Donald McKenzie; Helgo Magnussen
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5.  [Association between the forced midexpiratory flow/forced vital capacity ratio and bronchial hyperresponsiveness].

Authors:  I Urrutia; A Capelastegui; J M Quintana; N Muniozguren; F Payo; J Martínez Moratalla; J A Maldonado; X Basagana; J M Anto; J Sunyer
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6.  Impact of changes in the IOC-MC asthma criteria: a British perspective.

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Review 9.  Methods for "indirect" challenge tests including exercise, eucapnic voluntary hyperpnea, and hypertonic aerosols.

Authors:  Sandra D Anderson; John D Brannan
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10.  Inhaled salbutamol and endurance cycling performance in non-asthmatic athletes.

Authors:  M A van Baak; O M de Hon; F Hartgens; H Kuipers
Journal:  Int J Sports Med       Date:  2004-10       Impact factor: 3.118

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  3 in total

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2.  How to diagnose exercise induced asthma?

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Journal:  Asian J Sports Med       Date:  2011-06

3.  Current anti-doping policy: a critical appraisal.

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  3 in total

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