Stress, PhysiologicalHydrocortisoneStress, PsychologicalSalivaHeat-Shock ResponseHeat-Shock ProteinsCorticosteroneAdaptation, PhysiologicalHypothalamo-Hypophyseal SystemPituitary-Adrenal SystemHot TemperatureHSP70 Heat-Shock ProteinsTime FactorsHeart RateBehavior, AnimalGene Expression RegulationTranscription FactorsRNA, MessengerSignal TransductionTranscription, GeneticMolecular Sequence DataMutationExerciseDNA-Binding ProteinsAnalysis of VarianceBiological MarkersBlood PressureOxidative Stress