Editorial Perspective: Delayed circadian rhythm phase: a cause of late-onset attention-deficit/hyperactivity disorder among adolescents? / Jessica R. LUNSFORD-AVERY in Journal of Child Psychology and Psychiatry, 59-12 (December 2018)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 59-12 (December 2018) . - p.1248-1251 Titre : Editorial Perspective: Delayed circadian rhythm phase: a cause of late-onset attention-deficit/hyperactivity disorder among adolescents? Type de document : texte imprimé Auteurs : Jessica R. LUNSFORD-AVERY, Auteur ; Scott H KOLLINS, Auteur Article en page(s) : p.1248-1251 Langues : Anglais (eng) Mots-clés : Adhd  circadian rhythm  sleep Index. décimale : PER Périodiques Résumé : Late-onset attention-deficit/hyperactivity disorder (ADHD) has been a topic of significant debate within our field. One question focuses on whether there may be alternative explanations for the onset of inattentive and/or hyperactive symptoms in adolescence. Adolescence is a developmental period associated with a normative circadian rhythm phase delay, and there is significant overlap in the behavioral and cognitive manifestations and genetic underpinnings of ADHD and circadian misalignment. Delayed circadian rhythm phase is also common among individuals with traditionally diagnosed ADHD, and exposure to bright light may be protective against ADHD, a process potentially mediated by improved circadian timing. In addition, daytime sleepiness is prevalent in late-onset ADHD. Despite these converging lines of evidence, circadian misalignment is yet to be considered in the context of late-onset ADHD - a glaring gap. It is imperative for future research in late-onset ADHD to consider a possible causal role of delayed circadian rhythm phase in adolescence. Clarification of this issue has significant implications for research, clinical care, and public health. En ligne : http://dx.doi.org/10.1111/jcpp.12956 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=371 [article] Editorial Perspective: Delayed circadian rhythm phase: a cause of late-onset attention-deficit/hyperactivity disorder among adolescents? [texte imprimé] / Jessica R. LUNSFORD-AVERY, Auteur ; Scott H KOLLINS, Auteur . - p.1248-1251. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 59-12 (December 2018) . - p.1248-1251 Mots-clés : Adhd  circadian rhythm  sleep Index. décimale : PER Périodiques Résumé : Late-onset attention-deficit/hyperactivity disorder (ADHD) has been a topic of significant debate within our field. One question focuses on whether there may be alternative explanations for the onset of inattentive and/or hyperactive symptoms in adolescence. Adolescence is a developmental period associated with a normative circadian rhythm phase delay, and there is significant overlap in the behavioral and cognitive manifestations and genetic underpinnings of ADHD and circadian misalignment. Delayed circadian rhythm phase is also common among individuals with traditionally diagnosed ADHD, and exposure to bright light may be protective against ADHD, a process potentially mediated by improved circadian timing. In addition, daytime sleepiness is prevalent in late-onset ADHD. Despite these converging lines of evidence, circadian misalignment is yet to be considered in the context of late-onset ADHD - a glaring gap. It is imperative for future research in late-onset ADHD to consider a possible causal role of delayed circadian rhythm phase in adolescence. Clarification of this issue has significant implications for research, clinical care, and public health. En ligne : http://dx.doi.org/10.1111/jcpp.12956 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=371

Sleep regularity, circadian rhythms, and chronotype as mechanisms of risk for affective dysregulation in female adolescents / Christopher SIKES-KEILP in Development and Psychopathology, 38-3 (August 2026)  

Public ISBD [article]  inDevelopment and Psychopathology > 38-3 (August 2026) . - p.1399-1409 Titre : Sleep regularity, circadian rhythms, and chronotype as mechanisms of risk for affective dysregulation in female adolescents Type de document : texte imprimé Auteurs : Christopher SIKES-KEILP, Auteur ; Kayla A. JENSEN, Auteur ; Elizabeth D. WILSON, Auteur ; Jessica R. LUNSFORD-AVERY, Auteur ; Elizabeth H. ANDERSEN, Auteur Article en page(s) : p.1399-1409 Langues : Anglais (eng) Mots-clés : Adolescent sleep  chronotype  circadian rhythms  mood  sleep regularity Index. décimale : PER Périodiques Résumé : In a sample of early post-menarchal female adolescents, this study examined sleep regularity in relation to depression symptoms, circadian rhythms, and chronotype preference. Sixty-six female adolescents, aged 11–14 and within fifteen months post-menarche, completed a one-week sleep and circadian rhythm assessment involving self-reported sleep behaviors, 24-h sleep monitoring using wrist actigraphy, and serial cortisol and 6-sulfatoxymelatonin collections for four days. Sleep regularity was operationalized as the probability of being in the same wake/sleep state at any two timepoints 24 h apart (i.e., sleep regularity index (SRI)). Reduced SRI was associated with higher depressive symptoms (F [1,273] = 18.65, p = < .0001), as were eveningness chronotype (F [1,273] = 21.13, p = < .0001), sleep duration (F [1,273] = 6.25, p = .01), and self-reported life stress (F [1,273] = 22.82, p = < .0001). The interaction between SRI and chronotype was also a predictor of increased depression (F [1,273] = 18.65, p = < .0001), such that eveningness and low sleep regularity predicted higher scores. Sleep regularity was not significantly associated with cortisol awakening response, cortisol slope, or overnight melatonin levels. Sleep regularity appears linked to altered mood in early post-menarchal girls. Further research linking sleep regularity to physiological processes governing sleep is warranted. Interventions targeting sleep regularity stand to improve mental health outcomes, as well as promote healthy developmental trajectories for affect regulation. En ligne : https://dx.doi.org/10.1017/S0954579426101242 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=590 [article] Sleep regularity, circadian rhythms, and chronotype as mechanisms of risk for affective dysregulation in female adolescents [texte imprimé] / Christopher SIKES-KEILP, Auteur ; Kayla A. JENSEN, Auteur ; Elizabeth D. WILSON, Auteur ; Jessica R. LUNSFORD-AVERY, Auteur ; Elizabeth H. ANDERSEN, Auteur . - p.1399-1409. Langues : Anglais (eng) in Development and Psychopathology > 38-3 (August 2026) . - p.1399-1409 Mots-clés : Adolescent sleep  chronotype  circadian rhythms  mood  sleep regularity Index. décimale : PER Périodiques Résumé : In a sample of early post-menarchal female adolescents, this study examined sleep regularity in relation to depression symptoms, circadian rhythms, and chronotype preference. Sixty-six female adolescents, aged 11–14 and within fifteen months post-menarche, completed a one-week sleep and circadian rhythm assessment involving self-reported sleep behaviors, 24-h sleep monitoring using wrist actigraphy, and serial cortisol and 6-sulfatoxymelatonin collections for four days. Sleep regularity was operationalized as the probability of being in the same wake/sleep state at any two timepoints 24 h apart (i.e., sleep regularity index (SRI)). Reduced SRI was associated with higher depressive symptoms (F [1,273] = 18.65, p = < .0001), as were eveningness chronotype (F [1,273] = 21.13, p = < .0001), sleep duration (F [1,273] = 6.25, p = .01), and self-reported life stress (F [1,273] = 22.82, p = < .0001). The interaction between SRI and chronotype was also a predictor of increased depression (F [1,273] = 18.65, p = < .0001), such that eveningness and low sleep regularity predicted higher scores. Sleep regularity was not significantly associated with cortisol awakening response, cortisol slope, or overnight melatonin levels. Sleep regularity appears linked to altered mood in early post-menarchal girls. Further research linking sleep regularity to physiological processes governing sleep is warranted. Interventions targeting sleep regularity stand to improve mental health outcomes, as well as promote healthy developmental trajectories for affect regulation. En ligne : https://dx.doi.org/10.1017/S0954579426101242 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=590

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