Effects of Repeated Bouts of Soccer-Specific Intermittent Exercise on Salivary IgA

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 s...

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Bibliographic Details
Published in:International journal of sports medicine 2008-05, Vol.29 (5), p.366-371
Main Authors: Sari-Sarraf, V., Reilly, T., Doran, D., Atkinson, G.
Format: Article
Language:English
Subjects:
Adult
Biological and medical sciences
Exercise - physiology
Fundamental and applied biological sciences. Psychology
Humans
Hydrocortisone - analysis
Hydrocortisone - secretion
Immunoglobulin A, Secretory - analysis
Male
Osmolar Concentration
Physiology & Biochemistry
Proteins - analysis
Saliva - chemistry
Soccer - physiology
Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports
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Summary: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 (EX 1 : 215 ± 160 to 335 ± 246 and EX 2 : 144 ± 93 to 271 ± 185 mg · l -1 , 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.
ISSN:0172-4622
1439-3964
DOI:10.1055/s-2007-965427