Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
Views
356
Download
137
 
©Journal of Sports Science and Medicine (2021) 20, 706 - 713   DOI: https://doi.org/10.52082/jssm.2021.706

Research article
Pulmonary and Inspiratory Muscle Function Response to a Mountain Ultramarathon
Ignacio Martinez-Navarro1,2, , Eladio Collado3, Bárbara Hernando4, Carlos Hernando5,6
Author Information
1 Physical Education and Sports Department, University of Valencia, Valencia, Spain
2 Sports Health Unit, Vithas 9 de Octubre Hospital, Valencia, Spain
3 Faculty of Health Sciences, Jaume I University, Castellon, Spain
4 Department of Medicine, Jaume I University, Castellon, Spain
5 Sport Service, Jaume I University, Castellon, Spain
6 Department of Education and Specific Didactics, Jaume I University, Castellon, Spain

Ignacio Martinez-Navarro
✉ Faculty of Physical Activity and Sport Sciences. Department of Physical Education and Sports University of Valencia, C/Gascó Oliag, 3-46010 – Valencia, Spain
Email: ignacio.martinez-navarro@uv.es
Publish Date
Received: 30-06-2021
Accepted: 18-08-2021
Published (online): 01-10-2021
Share this article
 
 
ABSTRACT

The study aimed to provide within-race data on the time course of pulmonary function during a mountain ultramarathon (MUM). Additionally, we wanted to assess possible sex differences regarding pre- to post-race change in pulmonary and inspiratory muscle function. Lastly, we were interested in evaluating whether changes in respiratory function were associated with relative running speed and due to general or specific fatigue. 47 athletes (29 males and 18 females; 41 ± 5 years) were submitted to a cardiopulmonary exercise test (CPET) before a 107-km MUM. Spirometric variables: forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1), FEV1/FVC and peak expiratory flow (PEF); maximal inspiratory pressure (MIP); squat jump (SJ) and handgrip strength (HG) were assessed before and after the race. Additionally PEF was measured at three aid stations (33rd, 66th and 84th km) during the race. PEF declined from the 33rd to the 66th km (p = 0.004; d = 0.72) and from the 84th km to the finish line (p = 0.003; d = 0.90), while relative running speed dropped from the first (0-33 km) to the second (33-66 km) race section (p < 0.001; d = 1.81) and from the third (66-84 km) to the last race section (p < 0.001; d = 1.61). Post-race, a moderate reduction was noted in FVC (-13%; p < 0.001; d = 0.52), FEV1 (-19.5%; p < 0.001; d = 0.65), FEV1/FVC (-8.4%; p = 0.030; d = 0.59), PEF (-20.3%; p < 0.001; d = 0.58), MIP (-25.3%; p < 0.001; d = 0.79) and SJ (-31.6%; p < 0.001; d = 1.42). Conversely, HG did not change from pre- to post-race (-1.4%; p = 0.56; d = 0.05). PEF declined during the race in parallel with running speed drop. No sex differences were noted regarding post-race respiratory function, except that FEV1/FVC decay was significantly greater among women. The magnitude of pre- to post-race respiratory function decline was uncorrelated with relative running speed.

Key words: Maximal inspiratory pressure, peak expiratory flow, cardiopulmonary exercise test, ultraendurance, performance


           Key Points
  • No sex differences were found in pulmonary and inspiratory muscle function reduction after running a 107-km MUM, except that FEV1/FVC decay was significantly greater among women.
  • The time course of PEF during the race paralleled the changes in relative running speed; no significant association, however, was observed between relative running speed and pre- to post-race change in pulmonary and inspiratory muscle function.
  • Respiratory function decay following a 107-km MUM may be attributable to specific rather than general fatigue.
 
 
Home Issues About Authors
Contact Current Editorial board Authors instructions
Email alerts In Press Mission For Reviewers
Archive Scope
Supplements Statistics
Most Read Articles
  Most Cited Articles
 
  
 
JSSM | Copyright 2001-2020 | All rights reserved. | LEGAL NOTICES | Publisher

It is forbidden the total or partial reproduction of this web site and the published materials, the treatment of its database, any kind of transition and for any means, either electronic, mechanic or other methods, without the previous written permission of the JSSM.

This work is licensed under a Creative Commons License Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.