دانلود مقاله ISI انگلیسی شماره 76527
عنوان فارسی مقاله

سطح فعالیت جسمانی بر واکنش آدرنال و قلبی عروقی به استرس روانی- اجتماعی تاثیر می گذارد

کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
76527 2009 9 صفحه PDF سفارش دهید محاسبه نشده
خرید مقاله
پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.
عنوان انگلیسی
The level of physical activity affects adrenal and cardiovascular reactivity to psychosocial stress
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Psychoneuroendocrinology, Volume 34, Issue 2, February 2009, Pages 190–198

کلمات کلیدی
فعالیت بدنی؛ ورزش ها؛ تمرین؛ استرس روانی- اجتماعی؛ کورتیزول؛ ضربان قلب
پیش نمایش مقاله
پیش نمایش مقاله سطح فعالیت جسمانی بر واکنش آدرنال و قلبی عروقی به استرس روانی- اجتماعی تاثیر می گذارد

چکیده انگلیسی

Physical activity plays a key role in the control of neuroendocrine, autonomic, and behavioral responses to physical and psychosocial stress. However, little is known about how the level of physical activity modulates stress responsiveness. Here, we test whether different levels of physical activity are associated with different adrenal, cardiovascular, and psychological responses to psychosocial stress. In addition, competitiveness is assessed as a personality trait that possibly modulates the relationship between physical activity and stress reactivity. Eighteen elite sportsmen, 50 amateur sportsmen, and 24 untrained men were exposed to a standardized psychosocial laboratory stressor (Trier Social Stress Test). Repeated measures of salivary free cortisol, heart rate, and psychological responses to psychosocial stress were compared among the 3 study groups. Elite sportsmen exhibited significantly lower cortisol, heart rate, and state anxiety responses compared with untrained subjects. Amateur sportsmen showed a dissociation between sympathetic and hypothalamic–pituitary–adrenal responsiveness to stress, with significantly reduced heart rate responses but no difference in cortisol responses compared with untrained men. Different levels of competitiveness among groups did not mediate stress reactivity. Our results are in line with previous studies indicating reduced reactivity of the autonomic nervous system to psychosocial stress in trained individuals. More importantly, these findings imply a differential effect of the level of physical activity on different stress-related neurophysiological systems in response to psychosocial stress.

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پس از پرداخت، فوراً می توانید مقاله را دانلود فرمایید.