Effects of Inhaled Salbutamol on Sport-Specific Fitness of Non-Asthmatic Football Players
AbstractIn this article, we investigated the effectiveness of inhaled salbutamol withtherapeutic dose on the sport-specific performance of non-asthmatic young football players. In a double-blinded, randomised placebo controlled trial with 2-treatment, 2-period crossover design, twenty participants who were non-asthmatic junior professional football players were randomly allocated to two groups. Fifteen minutes before sport-specific fitness testing, each group randomly received 2 inhalations (200 micrograms) of salbutamol or placebo, respectively. After 1 week wash-out period, each participant has tested again, this time with the alternative inhaler. The primary outcomes were the differences between salbutamol and placebo groups in six tests of 7×30-m repeated sprint, Loughborough soccer dribbling, vertical jump, agility, Loughborough soccer passing, 20-m multistage shuttle run. A total of twenty players did two test batteries completely. There was no significant difference between salbutamol and placebo users in the tests [Treatment effect (CI95%); 7×30 sprint: -2.4 (-7.6-2.9), dribbling: -3.8 (-12.2-4.5), vertical jump: -1.2 (-3.7-1.3), agility: -0.4 (-0.9-0.1), passing: 0.2 (-12-12.4), shuttle run distance: -112 (-503.2-279.2)]. Furthermore, no period or carry-over effects were detected. It seems that single therapeutic dose of inhaled salbutamol (200 micrograms) does not appear to improve football related performance.
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