Respiratory muscle fatigue after an ultra-marathon measured as inspiratory task failure
Deutscher übersetzter Titel: | Ermuedung der Atemmuskulatur nach einem Ultramarathonlauf, ermittelt ueber das Versagen der Einatmungskraft |
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Autor: | Ker, J.A.; Schultz, C.M. |
Erschienen in: | International journal of sports medicine |
Veröffentlicht: | 17 (1996), 7, S. 493-496, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 0172-4622, 1439-3964 |
DOI: | 10.1055/s-2007-972884 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199610200770 |
Quelle: | BISp |
Abstract des Autors
Controversial literature exists concerning the occurrence of inspiratory muscle fatigue during efforts performed outside a laboratory. The purpose of this study was to assess inspiratory muscle strength and endurance time measured as Tlim, the length of time a subject can endure a task before the onset of fatigue, in ultra-marathon runners by simple non-invasive techniques before and after an ultra-marathon (87 km). Ten runners, (8 males and 2 females), who had normal clinical evaluation and lung function underwent inspiratory muscle assessment by measurement of maximal inspiratory mouth pressures and sustained inspiratory mouth pressures at a given target pressure and a given duty cycle. The measurements were performed prior to the race and 3 days after the race. No significant difference was observed in the inspiratory muscle strength 3 days after the race, but the inspiratory muscle endurance time as measured by Tlim, was significantly lower, with an overall decrease of 26.5%. Inspiratory muscle strength was normal 3 days after the race, however the inspiratory muscle endurance time as measured by sustained inspiratory pressure was still impaired 3 days after the race. Verf.-Referat