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Auteur Jens BLECHERT |
Documents disponibles écrits par cet auteur (1)
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Restricted autonomic flexibility in children with social phobia / Julian SCHMITZ in Journal of Child Psychology and Psychiatry, 52-11 (November 2011)
[article]
Titre : Restricted autonomic flexibility in children with social phobia Type de document : Texte imprimé et/ou numérique Auteurs : Julian SCHMITZ, Auteur ; Martina KRAMER, Auteur ; Brunna TUSCHEN-CAFFIER, Auteur ; Nina HEINRICHS, Auteur ; Jens BLECHERT, Auteur Année de publication : 2011 Article en page(s) : p.1203-1211 Langues : Anglais (eng) Mots-clés : Social phobia children autonomic flexibility psychopathology Index. décimale : PER Périodiques Résumé : Background: Psychophysiological hyperresponsiveness to social-evaluative stress plays a key role in current theories of social phobia (SP). Owing to the early onset of this disorder, the study of children with SP can help to improve etiological models. However, research to date has failed to clarify whether children with SP are physiologically hyperresponsive to stress or not. In addition, the existence of elevated pre-stressor baseline group differences complicates the interpretation of acute stress responses and therefore poses a challenge for this line of research. Drawing on current models of autonomic control to explain the relationship between baseline and stress responding in SP children and healthy controls (HC), we acquired a broad set of autonomic measures in our study.
Method: To index baseline and stress reactivity and to assess autonomic flexibility, we assessed a comprehensive array of sympathetic and parasympathetic measures in SP children (aged 8 to 12 years; n = 30) and healthy control children (HC, n = 26), while exposing them to the Trier Social Stress Test for Children (TSST-C).
Results: At baseline, the SP children showed higher levels of sympathetic (heart rate, electrodermal activity) and lower levels of parasympathetic (respiratory sinus arrhythmia, RSA) activation when compared to the HC children. During the TSST-C, the SP children showed similar HR responses but a limited RSA reactivity and a slower HR recovery relative to the HC children.
Conclusion: Our study extends previous research by showing elevated baseline arousal and comparable stress responding in SP children relative to HC children. In addition, based on the autonomic flexibility model, we provide a potential explanation for the null findings of previous studies during stress. The pattern of elevated baseline heart rates and reduced RSA point to restricted autonomic flexibility in children with SP.En ligne : http://dx.doi.org/10.1111/j.1469-7610.2011.02417.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=145
in Journal of Child Psychology and Psychiatry > 52-11 (November 2011) . - p.1203-1211[article] Restricted autonomic flexibility in children with social phobia [Texte imprimé et/ou numérique] / Julian SCHMITZ, Auteur ; Martina KRAMER, Auteur ; Brunna TUSCHEN-CAFFIER, Auteur ; Nina HEINRICHS, Auteur ; Jens BLECHERT, Auteur . - 2011 . - p.1203-1211.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 52-11 (November 2011) . - p.1203-1211
Mots-clés : Social phobia children autonomic flexibility psychopathology Index. décimale : PER Périodiques Résumé : Background: Psychophysiological hyperresponsiveness to social-evaluative stress plays a key role in current theories of social phobia (SP). Owing to the early onset of this disorder, the study of children with SP can help to improve etiological models. However, research to date has failed to clarify whether children with SP are physiologically hyperresponsive to stress or not. In addition, the existence of elevated pre-stressor baseline group differences complicates the interpretation of acute stress responses and therefore poses a challenge for this line of research. Drawing on current models of autonomic control to explain the relationship between baseline and stress responding in SP children and healthy controls (HC), we acquired a broad set of autonomic measures in our study.
Method: To index baseline and stress reactivity and to assess autonomic flexibility, we assessed a comprehensive array of sympathetic and parasympathetic measures in SP children (aged 8 to 12 years; n = 30) and healthy control children (HC, n = 26), while exposing them to the Trier Social Stress Test for Children (TSST-C).
Results: At baseline, the SP children showed higher levels of sympathetic (heart rate, electrodermal activity) and lower levels of parasympathetic (respiratory sinus arrhythmia, RSA) activation when compared to the HC children. During the TSST-C, the SP children showed similar HR responses but a limited RSA reactivity and a slower HR recovery relative to the HC children.
Conclusion: Our study extends previous research by showing elevated baseline arousal and comparable stress responding in SP children relative to HC children. In addition, based on the autonomic flexibility model, we provide a potential explanation for the null findings of previous studies during stress. The pattern of elevated baseline heart rates and reduced RSA point to restricted autonomic flexibility in children with SP.En ligne : http://dx.doi.org/10.1111/j.1469-7610.2011.02417.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=145