Cortisol, DHEA, Performance and Training in Elite Swimmers

Abstract Salivary cortisol (C) and DHEA concentrations were measured in 9 elite swimmers (4 female and 5male) over a 37-week period, 5 to 12 times per swimmer, before 68 competitions. For female and male swimmers, no significant relationship was found between C, DHEA and performance. For the whole g...

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Bibliographic Details
Published in:International journal of sports medicine 2002-10, Vol.23 (7), p.510-515
Main Authors: Chatard, J.-C., Atlaoui, D., Lac, G., Duclos, M., Hooper, S., Mackinnon, L.
Format: Article
Language:English
Subjects:
Adolescent
Adult
Analysis of Variance
Biological and medical sciences
Dehydroepiandrosterone - analysis
Female
Fundamental and applied biological sciences. Psychology
Humans
Hydrocortisone - analysis
Life Sciences
Linear Models
Male
Physical Education and Training
Predictive Value of Tests
Saliva
Swimming - physiology
Training & Testing
Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports
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Summary:Abstract Salivary cortisol (C) and DHEA concentrations were measured in 9 elite swimmers (4 female and 5male) over a 37-week period, 5 to 12 times per swimmer, before 68 competitions. For female and male swimmers, no significant relationship was found between C, DHEA and performance. For the whole group, C was negatively correlated with week number of training (r = -0.31, p < 0.01). The incorporation of the cumulated distance swum as a second variable in the regression increased r to 0.56 (p < 0.01). The higher the cumulated distance swum, the higher C. No significant relationship was found between DHEA and distance swum. For individual swimmers, 3 of 4 females showed a significant negative relationship between C and cumulated dry-land training. No equivalent relationship was found for DHEA. The 2 males practicing dry-land training showed a significant and negative relationship between DHEA and cumulated dry-land training. No equivalent relationship was found for C. Thus, C and DHEA were not good predictors of swimming performance. C for individual females, and DHEA for individual males were considered useful markers for dry-land training stress.
ISSN:0172-4622
1439-3964
DOI:10.1055/s-2002-35073