Ane Arregi , Oscar Vegas , Aitana Lertxundi , Gonzalo García-Baquero , Jesus Ibarluzea , Ainara Andiarena , Izaro Babarro , Mikel Subiza-Pérez , Nerea Lertxundi
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引用次数: 0
Abstract
Introduction
Children's exposure to chronic stress is associated with several health problems. Measuring hair cortisol concentration is particularly useful for studying chronic stress but much is unknown about hair cortisol determinants in children and adolescents, and previous research has often not considered the simultaneous exposure of multiple variables. This research is focused on investigating the relationship between environmental, social and individual factors with hair cortisol concentration in children.
Methods
The data used in this study are from the INMA prospective epidemiological cohort study. The assessment of chronic stress was made on the basis of hair samples taken at the age of 11 years in the INMA-Gipuzkoa cohort (n = 346). A metamodel summarizing the hypothesized relationships among environmental, social and individual factors and hair cortisol concentration was constructed based on previous literature. Structural Equation Modelling was performed to examine the relationships among the variables.
Results
In the general model higher behavioural problems were associated with higher cortisol levels and an inverse relationship between environmental noise and cortisol levels was observed, explaining 5 % of the variance in HCC. Once stratified by sex these associations were only hold in boys, while no significant effect of any of the study variables was related with cortisol levels in girls. Importantly, maternal stress was positively related to behavioural difficulties in children. Finally, higher traffic-related air pollution and lower exposure to neighborhood greenness were related to higher environmental noise.
Discussion
This study highlights that simultaneous exposure to different environmental, social and individual characteristics may determine the concentration of hair cortisol. More research is needed and future studies should include this complex view to better understanding of hair cortisol determinants in children.
期刊介绍：
Hormones and Behavior publishes original research articles, reviews and special issues concerning hormone-brain-behavior relationships, broadly defined. The journal''s scope ranges from laboratory and field studies concerning neuroendocrine as well as endocrine mechanisms controlling the development or adult expression of behavior to studies concerning the environmental control and evolutionary significance of hormone-behavior relationships. The journal welcomes studies conducted on species ranging from invertebrates to mammals, including humans.
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