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Salivary IgA as a Predictor of Upper Respiratory Tract Infections and Relationship to Training Load in Elite Rugby Union Players
- Source :
- Journal of Strength and Conditioning Research. 34:782-790
- Publication Year :
- 2020
- Publisher :
- Ovid Technologies (Wolters Kluwer Health), 2020.
-
Abstract
- Tiernan, C, Lyons, M, Comyns, T, Nevill, AM, and Warrington, G. Salivary IgA as a predictor of upper respiratory tract infections and relationship to training load in elite rugby union players. J Strength Cond Res 34(3): 782-790, 2020-Upper Respiratory Tract Infections (URTI) are among the most common illnesses reported in athletes. An URTI can result in missed training days, which in turn may lead to performance decrements. The purpose of this study was to investigate the use of salivary immunoglobulin A (sIgA) as a predictor of URTI, while also exploring the relationship to weekly training load in elite rugby union players. Nineteen male elite rugby union players provided morning saliva swabs, biweekly (Monday and Friday), over a 10-week training period. Participants completed an illness log documenting symptoms of URTI. Session Rate of Perceived Exertion (sRPE) was collected to determine training load (sRPE × session duration). Weekly training load was also calculated. Logistic regression was used to analyze the relationship between incidences of URTI with sIgA and training load. Multilevel regression was conducted to compare associations between sIgA and training load. The results found that the likelihood of suffering from an URTI increased when sIgA significantly decreased (p = 0.046). Where sIgA decreased by 65% or more, a player was at a greater risk of contracting an URTI within the following 2 weeks. No association was found between sIgA and training load. In conclusion, sIgA may be a useful predictor for determining the likelihood of players contracting an URTI. This will allow the coach to make informed decisions on training status, helping reduce the risk of players missing training, which may have performance decrements. Coaches will benefit from the fast, easy, and instant results available, to analyze a player's immune function.
- Subjects :
- Male
medicine.medical_specialty
Adolescent
Physical Exertion
education
Football
Physical Therapy, Sports Therapy and Rehabilitation
030204 cardiovascular system & hematology
monitoring markers
Logistic regression
Salivary iga
recovery
Young Adult
03 medical and health sciences
0302 clinical medicine
Predictive Value of Tests
Humans
Medicine
Orthopedics and Sports Medicine
Young adult
Training load
Saliva
Respiratory Tract Infections
Morning
biology
Respiratory tract infections
business.industry
Athletes
illness
030229 sport sciences
General Medicine
biology.organism_classification
Predictive value of tests
Immunoglobulin A, Secretory
Physical therapy
business
human activities
sIgA
performance
Physical Conditioning, Human
Subjects
Details
- ISSN :
- 10648011
- Volume :
- 34
- Database :
- OpenAIRE
- Journal :
- Journal of Strength and Conditioning Research
- Accession number :
- edsair.doi.dedup.....065abf816eb6ae5f5b715da18158d36c