Age group swimmers (M = 18; f = 12) were assessed at various stages of a competitive season for psychological stresses (
Daily
analyses of Life Demands for Athletes) and on
biochemical factors (salivary IgA and cortisol levels).
Over a five month period there was no difference in the sources of perceived stress, but significant increase in the number of stress symptoms and cortisol levels and a decrease in salivary IgA levels.
Implication. Changes in biochemical indices of stress may be
associated with increased reports of symptoms of stress and decline in general health.