Cycling federation doctor: Nothing surprising about prevalence of asthma amongst pro riders – CyclingTips


CyclingTips

Cycling federation doctor: Nothing surprising about prevalence of asthma amongst pro riders
CyclingTips
In the wake of the Simon Yates adverse analytical finding for the anti-asthma medication Terbutaline, CyclingTips has sought to answer a question many are asking: just why do so many pro cyclists have asthma? Given that said cyclists are amongst the
Why do so many elite athletes have asthma?The Guardian
What's the deal with asthma and pro cycling?Cycling Weekly
Yates fails drugs test using asthma inhalerEyewitness News
Telegraph.co.uk –BBC News –TRT World
all 89 news articles »

View full post on asthma – Google News

Simon Yates fails drugs test after ‘using asthma inhaler’ to plunge British Cycling deeper into crisis – Telegraph.co.uk


Telegraph.co.uk

Simon Yates fails drugs test after 'using asthma inhaler' to plunge British Cycling deeper into crisis
Telegraph.co.uk
A disastrous week got worse for British Cycling last night after it emerged that Simon Yates, the former points race world champion and a contender for a spot on the GB road team at Rio de Janeiro this summer, failed an in-competition drugs test
Yates fails drugs test using asthma inhaler: teamReuters
Simon Yates: British cyclist fails drug test 'after asthma inhaler error'BBC Sport
British cyclist Simon Yates fails drug test 'after asthma inhaler error'ITV News
Daily Mail –The Guardian
all 41 news articles »

View full post on asthma – Google News

High-Dose Inhaled Salbutamol Does Not Improve 10-km Cycling Time-Trial Performance.

Related Articles

High-Dose Inhaled Salbutamol Does Not Improve 10-km Cycling Time-Trial Performance.

Med Sci Sports Exerc. 2015 Apr 8;

Authors: Koch S, Ahn JR, Koehle MS

Abstract
BACKGROUND: ?2-agonists are on the World Anti-Doping Agency’s (WADA) list of prohibited substances; however, athletes are allowed to treat symptoms of exercise-induced bronchoconstriction with a maximal daily dose of 1600 ?g of salbutamol when taken up by inhalation.
PURPOSE: To investigate if 1600 ?g of salbutamol lead to an enhanced time-trial performance in trained, competitive male cyclists, with and without exercise-induced bronchoconstriction, based on inhaled dose per kilogram of body weight (kg/BW).
METHODS: In a randomized, crossover design, 20 trained male cyclists (8 with a positive eucapnic voluntary hyperpnea challenge (EVH+) and 12 with a negative EVH challenge (EVH-) performed two simulated 10-km time-trials on a cycle ergometer 30-min after the inhalation of either 1600 ?g of salbutamol or placebo. Lung function, assessed by forced expiratory volume in 1 second (FEV1), was measured immediately before and 15 min after inhalation. The main performance outcome was mean power output.
RESULTS: After the inhalation of salbutamol, FEV1 was significantly increased by 6.4% (4.9%) vs. 1.0% (4.4%) with placebo (p < 0.001). Despite this increase in FEV1, mean power output during the salbutamol time-trial was not increased, regardless of relative dose per kg/BW and asthma status. Mean heart rate (p = 0.01), respiratory rate (p = 0.01) and minute ventilation (p = 0.03) and perceived leg discomfort (p = 0.03) were significantly increased in the salbutamol condition.
CONCLUSIONS: The inhalation of 1600?g salbutamol improved FEV1 regardless of EVH-status, but did not improve 10-km time-trial performance in trained, competitive male cyclists, regardless of relative dose per kg/BW or EVH-status. Significant increases in heart rate and minute ventilation occurred secondary to stimulation of the adrenergic nervous system.

PMID: 25856682 [PubMed – as supplied by publisher]

View full post on pubmed: asthma