Influence of intense exercise on saliva glutathione in prepubescent and pubescent boys

Juan de Dios Benitez-Sillero, Juan Luis Perez-Navero, Inmaculada Tasset, Manuel Guillen-Del Castillo, Mercedes Gil-Campos, Isaac Tunez

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


Intense aerobic exercise has been found to prompt changes in oxidative stress, but in children remains almost unexplored. The aim was to investigate the effect of intense physical exercise on reduced glutathione (GSH as a biomarker of oxidative stress) and adrenocortical response (to verify a certain level of stress after exercise) in 38 prepubescent and 32 pubescent non-athlete boys. Four subgroups were established as puberty stage and physical fitness. Saliva samples were taken before and after incremental exercise testing to measure GSH, and cortisol levels. Saliva reduced glutathione levels were lower in all subgroups after exercise except in the prepubescent average fit group, significance being greater in the pubescent (P < 0.001) than in the prepubescent group (P < 0.01). Saliva cortisol increased after exercise in all except in the prepubescent "average fit" group. Physical exercise may give rise to oxidative stress and adrenocortical response in pubescent and prepubescent boys, depending on the duration and intensity of the test.

Original languageEnglish (US)
Pages (from-to)181-186
Number of pages6
JournalEuropean Journal of Applied Physiology
Issue number2
StatePublished - 2009
Externally publishedYes


  • Adolescents
  • Anti-oxidant defence mechanisms
  • Fitness testing
  • Physical stress

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Public Health, Environmental and Occupational Health
  • Physiology (medical)


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