Feasibility to apply eucapnic voluntary hyperventilation in young elite athletes - 01/02/16

Abstract |
Introduction: Exercise-induced bronchoconstriction (EIB) is more common in athletes compared to the general population. The eucapnic voluntary hyperventilation test is used to detect EIB in adult athletes. It is however unclear whether this technique is also applicable to young athletes.
Methods
Young athletes (basketball (n = 13), football (n = 19), swimming (n = 12)) were recruited at the start of their elite sports career (12–14 years). Eight age-matched controls were also recruited. Eucapnic voluntary hyperventilation test was performed according to ATS guidelines in all subjects. A second (after 1 year, n = 32) and third (after 2 years, n = 39) measurement was performed in a subgroup of athletes and controls.
Results
At time of first evaluation, 3/13 basketball players, 4/19 football players, 5/11 swimmers and 1/8 controls met criteria for EIB (fall in FEV1≥10% after EVH). A ventilation rate of >85% of the maximal voluntary ventilation (MVV) is recommended by current guidelines (for adults) but was only achieved by a low number of individuals (first occasion: 27%, third occasion: 45%) However, MVV in young athletes corresponds to 30 times FEV1, which is equivalent to 85% of MVV in adults. A threshold of 70% of MVV (21 times FEV1) is feasible in the majority of young athletes.
Conclusion
EIB is present in a substantial number of individuals at the age of 12–14 years, especially in swimmers. This underscores the importance of screening for EIB at this age. EVH is feasible in young elite athletes, however target ventilation needs to be adjusted accordingly.
Le texte complet de cet article est disponible en PDF.Highlights |
• | EIB is present is a substantial number of young athletes, especially swimmers. |
• | EVH is feasible in young elite athletes but target ventilation needs to be adjusted. |
• | A minimal ventilatory threshold of 70% of MVV during EVH is suggested. |
Keywords : Exercise-induced bronchoconstriction, Eucapnic voluntary hyperventilation, Maximum voluntary ventilation, Adolescent, Elite athlete, Asthma
Vol 111
P. 91-93 - février 2016 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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