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One\u2010hundred and thirty\u2010five 11\u201318\u2005year olds (<jats:italic>M<\/jats:italic><jats:sub>age<\/jats:sub>\u00a0=\u200914.2\u2009years, <jats:italic>SD<\/jats:italic>\u00a0=\u20091.9, 52% female) completed the Trier Social Stress Test for Children. Salivary cortisol and subjective stress ratings were collected at six time points, and heart rate as well as heart rate variability were measured pre\u2010, during and post\u2010stress induction. Additionally, sleep disturbances and insomnia diagnosis were assessed by a self\u2010report questionnaire and a sleep interview. Robust mixed models investigated if adolescents with compared with adolescents without (a) sleep disturbances and (b) insomnia differ regarding cortisol, heart rate, heart rate variability and psychological stress reactivity considering gender effects. The results indicated that boys with high sleep disturbances showed higher cortisol activity compared with boys with low sleep disturbances, <jats:italic>B<\/jats:italic>\u00a0=\u20090.88, <jats:italic>p<\/jats:italic>\u00a0&lt;\u20090.05. Moreover, in boys with insomnia, heart rate and alpha 1 significantly differ less than in boys without insomnia. These findings support the notion of sex differences regarding the association between poor sleep and increased activity of the hypothalamic\u2013pituitary\u2013adrenal axis, and a less adaptable autonomic nervous system in boys in response to an experimental social stress task.<\/jats:p>","DOI":"10.1111\/jsr.13591","type":"journal-article","created":{"date-parts":[[2022,7,18]],"date-time":"2022-07-18T01:14:55Z","timestamp":1658106895000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Stress reactivity in salivary cortisol and electrocardiogram in adolescents: Investigating sleep disturbances and insomnia"],"prefix":"10.1111","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7951-4642","authenticated-orcid":false,"given":"Maren\u2010Jo","family":"Kater","sequence":"first","affiliation":[{"name":"Faculty of Psychology and Sports Science, Developmental Psychology and Developmental Psychopathology Bielefeld University  Bielefeld Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2928-9314","authenticated-orcid":false,"given":"Anika","family":"Werner","sequence":"additional","affiliation":[{"name":"Faculty of Psychology and Sports Science, Developmental Psychology and Developmental Psychopathology Bielefeld University  Bielefeld Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Angelika A.","family":"Schlarb","sequence":"additional","affiliation":[{"name":"Faculty of Psychology and Sports Science, Clinical Psychology and Psychotherapy of Children and Adolescents Bielefeld University  Bielefeld Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Arnold","family":"Lohaus","sequence":"additional","affiliation":[{"name":"Faculty of Psychology and Sports Science, Developmental Psychology and Developmental Psychopathology Bielefeld University  Bielefeld Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,7,17]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.psyneuen.2018.12.017"},{"key":"e_1_2_8_3_1","volume-title":"International classification of sleep disorders","author":"American Academy of Sleep Medicine","year":"2014"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.copsyc.2019.12.002"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.3109\/10253890.2015.1087503"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.neubiorev.2021.06.005"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2869.1996.00251.x"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1097\/00006842-199707000-00012"},{"issue":"137","key":"e_1_2_8_9_1","first-page":"201","article-title":"Relationships between anxiety, fear, self\u2010esteem, and coping strategies in adolescence","volume":"35","author":"Byrne B.","year":"2000","journal-title":"Adolescence"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.adolescence.2006.04.004"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1207\/s15402010bsm0304_1"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.sleep.2017.09.011"},{"key":"e_1_2_8_13_1","unstructured":"D\u00f6pfner M. &G\u00f6rtz\u2010Dorten A.(2017).Diagnostik\u2010System f\u00fcr psychische St\u00f6rungen nach ICD\u201010 und DSM\u20105 f\u00fcr Kinder und Jugendliche\u2010III. 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