RESUMO
Alterations in neuroendocrine and immune function were examined in sedentary (n=15) (VO2peak; 31.4+/-0.7 ml x kg(-1) x min(-1); 24.4+/-1.2yr), moderately active (n=15) (VO2peak; 45.4+/-1.1 ml x kg(-1) x min(-1); 24.2+/-1.1 yr) and aerobically trained (n=15) (VO2peak; 58.8+/-0.9 ml x kg(-1) x min(-1); 24.3+/-1.0 yr) men following exposure to an acute mild psychological stressor. Subjects had 2 min to prepare, and 3 min to deliver a speech in front of 3 observers. Blood samples were drawn from an indwelling catheter before, during and 30 min following the speech task (ST). Self-reported measures of anxiety were obtained prior to and immediately following the stressor. The ST resulted in significant alterations in the number and function of immune cells, and in self-reported anxiety scores. Plasma levels of norepinephrine increased during the speech task. The neuroendocrine and immune response to the chosen stressor were independent of subject aerobic fitness level.
Assuntos
Exercício Físico/fisiologia , Norepinefrina/sangue , Aptidão Física , Estresse Fisiológico/sangue , Teste de Esforço , Humanos , Hidrocortisona/sangue , Imunidade Celular , Imunofenotipagem , Células Matadoras Naturais , Contagem de Leucócitos , MasculinoAssuntos
Antiarrítmicos/efeitos adversos , Arritmias Cardíacas/induzido quimicamente , Arritmias Cardíacas/tratamento farmacológico , Adulto , Antiarrítmicos/uso terapêutico , Arritmias Cardíacas/fisiopatologia , Estimulação Elétrica , Eletrocardiografia , Eletrofisiologia , Sistema de Condução Cardíaco/fisiopatologia , Humanos , Masculino , Pessoa de Meia-IdadeRESUMO
A specific programme elaborated for microcalculator "Electronika MK 61" can be applied by intensive care specialists to mathematical processing of the results of impedance plethysmography and phase analysis of the cardiac cycle.