Effects of repeated bouts of soccer-specific intermittent exercise on salivary IgA

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Deutscher übersetzter Titel:Der Effekt von wiederholten, fußballspezifischen intermittierenden Leistungen auf Speicheldrüsen IgA
Autor:Sari-Saraff, V.; Reilly, T.; Doran, D.; Atkinson, G.
Erschienen in:International journal of sports medicine
Veröffentlicht:29 (2008), 5, S. 366-371, Lit.
Format: Literatur (SPOLIT)
Publikationstyp: Zeitschriftenartikel
Medienart: Gedruckte Ressource Elektronische Ressource (online)
Sprache:Englisch
ISSN:0172-4622, 1439-3964
DOI:10.1055/s-2007-965427
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Erfassungsnummer:PU200809002830
Quelle:BISp

Abstract

Failure to recover fully between sessions has been suggested to cause immunodepression. Therefore, the cumulative effects of soccer-specific intermittent exercise undertaken on different days 48 h apart on salivary IgA, cortisol and total protein concentration were investigated. Nine male subjects completed two trials of soccer-specific intermittent exercise 48 h apart on a motorised treadmill. Timed unstimulated saliva samples were collected immediately before and after exercise, and 24 and 48 h post-exercise. Salivary IgA concentration (EX1: 215+/-160 to 335+/-246 and EX2: 144+/-93 to 271+/-185 mg/l, p=0.007), osmolality (p=0.001) and total protein (p=0.001) increased immediately following exercise in both trials and decreased 24 h afterwards, whereas saliva flow rate decreased significantly (p=0.015) before returning to pre-exercise values 24 h postexercise. The IgA secretion rate, IgA to osmolality ratio, IgA to total protein, solute secretion rate, total protein secretion rate, and cortisol did not differ between the time-points. The results suggest that performing two bouts of moderate intensity soccer-specific intermittent exercise 48 h apart does not suppress resting salivary IgA concentration significantly although a small progressive reduction in salivary IgA was observed. These findings may not extend to successive competitive soccer games when vulnerable players might experience clinically relevant reductions in s-IgA. Verf.-Referat