[Effect of exercise with moderate intensity in the morning on some factors of immune systems in adults]

The purpose of this study was to determine changes in salivary immunoglobulin A concentrations [S-IgA] and cortisol levels and any relationship between them, in adults after eight weeks of moderately intense exercise in the morning. Thirty, healthy, adult men [aged 30-50 years] having a sedentary lifestyles, were randomly selected and assigned to either the control or the exercise group; their exercise program consisted of three sessions a week, for eight weeks. Each subject performed exercise at 06:00 a.m at 75% of maximum heart rate during the study, while controls continued their normal life style. Changes in fasting S-IgA concentrations and cortisol serum levels were monitored at the beginning and end of exercise at [0900] a.m following every session. Analysis of data was performed, using t-student test for comparing means of pre and post test. Pearsons correlation was used to determine any relationship between S-IgA concentration with cortisol concentration. The level of significance was chosen at P