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The effects of 8-week regular morning exercises on the Immunoglobulin A and Serum Cortisol in women of ShahreKord, Iran Running title: The effect of morning exercises on the indicators of immunity

Background: physical activity is a variable which creates hormonal and physiological adaptation and changes the many aspects of immune function. This study aimed to examine the effects of 8-week morning exercises on the Immunoglobulin A and Serum Cortisol and the relationship between them in women. Methods: this study is experimental and 32 healthy sedentary women aged 30 to 40 years old were selected randomly and divided to two test group and control group. The test group has done morning exercises at 6:00 o’clock, 3 times per week for 8 weeks and the control group had continued their normal life style. Fasting blood samples were gathered a day before doing exercises and also, on last day after doing exercises at the same time (8:00 a.m.) and then tested. The data were analyzed by descriptive statistical methods. Results: the results showed that doing morning exercises for 8 weeks increases the Serum Cortisol level in women significantly and its mean was 17.7 ± 6.02 m g/dl in test group (P 0.05). No significant correlation was observed between Immunoglobulin A and Serum Cortisol. Conclusion: it can be concluded that doing morning exercises for 8 years regularly has increased the Serum Cortisol level in women in ShahreKord, Iran. It seems that it caused by physiological stress and hormonal responses of women but it has no effects on the increase of Immunoglobulin A.