دانلود رایگان مقاله انگلیسی بررسی فرد محور کورتیزول بزاق و پاسخ های آلفا آمیلاز به استرس روانی- اجتماعی - الزویر 2018

ABSTRACT

This study adopted a person-centered approach to identify preadolescent salivary cortisol (sC) and alpha-amylase (sAA) co-activation response patterns and examine links to behavioral functioning and coping. Children (N = 151, 51.7% male) were exposed to the Trier Social Stress Test (TSST) and one of two randomly-assigned, post-TSST coping conditions: distraction or avoidance. Multi-trajectory modeling yielded four child subgroups. Child internalizing and externalizing positively predicted High sC–High sAA relative to Low sC–Low sAA and Low sC–High sAA relative to High sC–Low sAA subgroup membership, respectively. Low sC–Low sAA children demonstrated more efficient sC recovery when primed with distraction and more protracted sC recovery when primed with avoidance. For High sC–High sAA, internalizing children, the opposite was true. Findings illustrate adjustment-linked variability in preadolescent sC–sAA co-activation response patterns that further articulates for whom effortful coping works to effectively manage stressor-induced neuroendocrine activation.

5. Discussion

This study identified distinct profiles of preadolescent HPA-SAM coactivation patterning and linked them to behavioral functioning and coping-related neuroendocrine recovery efficiency. Using multi trajectory modeling of HPA (sC) and SAM (sAA) index activity in response to a standardized psychosocial stressor (TSST-C), four hypothesized subgroups emerged whose sC and sAA trajectories were consistent with specific cross-system co-activation theories (Bauer et al., 2002). These trajectories were distinct with respect to both baseline levels and change patterning. Additionally, identified HPA-SAM profiles related to children’s behavioral functioning in both expected and unexpected ways, suggesting that Additive-Symmetry and Interactive-Asymmetry consistent patterns of HPA-SAM co-activation may differ for children with internalizing versus externalizing symptoms. Lastly, children with different HPA-SAM co-activation profiles used different coping skills to support neuroendocrine recovery efficiency in a manner consistent with their parent– and self–reported behavioral functioning. This study provides a fine-grained depiction of meaningful variability in preadolescent HPA-SAM co-activation while also advancing support for the claim that there are no universals to what constitutes effective coping (Wadsworth, 2015).