Title :

Increased exhaled breath condensate 8-isoprostane after a swimming session in competitive swimmers

Author(s) :

Morissette, Mathieu C [Auteur]
Murray, Nicolas [Auteur]
Turmel, Julie [Auteur]
Milot, Julie [Auteur]
Boulet, Louis-Philippe [Auteur]
Bougault, Valerie [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - EA 7369
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 [URePSSS]

Journal title :

European journal of sport science

Abbreviated title :

Eur. J. Sport Sci.

Volume number :

16

Pages :

569-576

Publication date :

2016-01-01

ISSN :

1746-1391

English keyword(s) :

bronchoconstriction
swimming
Oxidative stress
bronchodilation

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

OBJECTIVE: This study aimed to evaluate the levels of 8-isoprostane (8-IsoP) in the airways of competitive swimmers at baseline and after a swimming session according to their airway responsiveness. METHODS: Twenty-three ...
Show more >OBJECTIVE: This study aimed to evaluate the levels of 8-isoprostane (8-IsoP) in the airways of competitive swimmers at baseline and after a swimming session according to their airway responsiveness. METHODS: Twenty-three swimmers and six lifeguards had a baseline spirometry and bronchoprovocative challenges. During a second visit, swimmers performed a usual swimming session while lifeguards stayed in the same pool environment for the same time period. Forced expiratory volume in one second (FEV1) was measured before and 5 min after the end of the session. Exhaled breath condensate (EBC) was sampled before and 10 min after the session and EBC 8-IsoP levels were analysed by enzyme immunoassay. Change in EBC 8-IsoP from baseline to post-swimming session was calculated. RESULTS: We observed no relationships between airway hyper-responsiveness and 8-IsoP values before or after swimming in swimmers. The levels of 8-IsoP were significantly higher after the training session (mean value 2.9, s = 0.5 pg mL(-1)) than at baseline (mean value 1.9, s = 0.4 pg mL(-1)) in swimmers only (p = .012). EBC 8-IsoP levels after the swimming session significantly correlated with the percent change in FEV1 after swimming. CONCLUSIONS: EBC 8-IsoP levels were increased after training in swimmers but not in lifeguards, suggesting that exercise-induced hyperpnoea in a chlorinated pool environment increases airways oxidative stress.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Collections :

• Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369

Research team(s) :

Activité Physique, Muscle, Santé (APMS)

Submission date :

2019-09-24T07:28:57Z