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Sex differences in ventilation amongst athletes undergoing EVH challenge testing for exercise-induced bronchoconstriction

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journal contribution
posted on 20.11.2020, 14:28 by Nilam Khan, Martin Lindley, Sarabjit Mastana
We aimed to report sex differences in ventilation during EVH challenge in University athletes while exploring whether they achieve inspiratory target. Seventy-seven athletes (n = 42 males, n = 35 females) performed six-minute EVH challenge involving compressed gas (5% CO2 , 21% O2 and balance N2 ) inhalation at an inspiratory target of 85% MVVindirect. Ventilation was recorded every 15 seconds during EVH challenge with pre-and post-challenge measurements of FEV1 determining outcomes. Males reached significantly higher ventilation (412.0 ± 55.0 L) compared with female athletes (292.5 ± 43.2 L), (F = 3890.0, p < 0.05), and a significant effect of time (F(23) = 3689.8, p < 0.05) as well as interaction (F = 106.3, p < 0.05) was noted. There were significant differences in cumulative ventilation attained (679.5 ± 146.6 L) during the 6-min EVH compared with inspiratory target (807.0 ± 169.6 L), amongst both sexes (t(76) = 5.0, p < 0.05) as well as EIB positive and negative groups (p < 0.05). The results support sex differences in ventilation achievement and suggest EVH inspiratory target of 85% MVVindirect is generally not reached by athletes, thereby requiring re-evaluation and further exploration of sex differences in future EVH studies.

History

School

  • Sport, Exercise and Health Sciences

Published in

Archives of Sports Medicine

Volume

4

Issue

2

Pages

215-221

Publisher

Scholars DirecT

Version

VoR (Version of Record)

Rights holder

© The authors

Publisher statement

This is an Open Access Article. It is published by Scholars Direct under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/

Acceptance date

15/10/2020

Publication date

2020-10-17

Copyright date

2020

eISSN

2578-6334

Language

en

Depositor

Dr Martin Lindley Deposit date: 18 November 2020

Licence

Exports