title: The effect of anaerobic exercise on salivary cortisol, testosterone and immunoglobulin (A) in boys aged 15-16 years.
abstract: This study investigated the effect of repeated bouts of short-term, high-intensity cycling exercise on the salivary cortisol, testosterone and immunoglobulin (A) concentrations of 15-16 year old boys. Seventeen apparently healthy schoolchildren (aged 15.5 +/- 0.4 years) participated in this study. All participants completed 6 x 8 s sprints, interspersed with 30 s recovery intervals on a cycle ergometer. Using the passive drool method, salivary samples were taken before, and 5 min after, exercise. The group mean for peak power output was 723.1 +/- 180.3 s. There were significant changes (p < or = 0.05) in both SalT and SalC, 5 min after completing 6 x 8 s cycle sprints. No significant differences (p > 0.05) were recorded for SIg(A). The increases in SalT and SalC reported in this study confirm that repeated bouts of short-term, high-intensity exercise produces significant physiological hormonal responses in adolescent boys, but does not affect mucosal immune function.
authors: Centre for Child Research, School of Human Sciences, Swansea University, Singleton Park, Swansea SA2 8PP, UK. n.e.thomas@swansea.ac.uk
authors: Non Eleri
authors: NE
authors: Thomas
authors: Anna
authors: A
authors: Leyshon
authors: Michael G
authors: MG
authors: Hughes
authors: Bruce
authors: B
authors: Davies
authors: Michael
authors: M
authors: Graham
authors: Julien S
authors: JS
authors: Baker
mesh_terms: D000293:Adolescent; D000693:Anaerobiosis / Q000502:physiology*; D001642:Bicycling / Q000502:physiology; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D006801:Humans; D006854:Hydrocortisone / Q000032:analysis / Q000378:metabolism*; D007070:Immunoglobulin A / Q000032:analysis / Q000378:metabolism*; D008297:Male; D018763:Muscle Fatigue / Q000502:physiology; D010101:Oxygen Consumption / Q000502:physiology; D010507:Periodicity; D012463:Saliva / Q000737:chemistry / Q000378:metabolism*; D013739:Testosterone / Q000032:analysis / Q000378:metabolism*
chemical_list: D007070:Immunoglobulin A; D013739:Testosterone; D006854:Hydrocortisone