Blar i Bergen Open Research Archive på forfatter "Bolstad, Courtney J."
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Association between hypersomnolence and the COVID-19 pandemic: The International COVID-19 Sleep Study (ICOSS)
Sarkanen, Tomi; Partinen, Markku; Bjorvatn, Bjørn; Merikanto, Ilona; Benedict, Christian; Nadorff, Michael R.; Bolstad, Courtney J.; Espie, Colin; Matsui, Kentaro; Chung, Frances; Morin, Charles M.; Wing, Yun Kwok; Penzel, Thomas; Macêdo, Tainá; Mota-Rolim, Sérgio; Holzinger, Brigitte; Plazzi, Giuseppe; De Gennaro, Luigi; Landtblom, Anne-Marie; Inoue, Yuichi; Sieminski, Mariuz; Leger, Damien; Dauvilliers, Yves (Journal article; Peer reviewed, 2023)Background The COVID-19 pandemic and related restriction measures have affected our daily life, sleep, and circadian rhythms worldwide. Their effects on hypersomnolence and fatigue remain unclear. Methods The ... -
Associations between changes in habitual sleep duration and lower self-rated health among COVID-19 survivors: findings from a survey across 16 countries/regions
Matsui, Kentaro; Chung, Frances; Bjelajac, Adrijana Koscec; Merikanto, Ilona; Korman, Maria; Mota-Rolim, Sérgio; Cunha, Ana Suely; Bjorvatn, Bjørn; Xue, Pei; Benedict, Christian; Morin, Charles M.; Espie, Colin A.; Landtblom, Anne-Marie; Penzel, Thomas; De Gennaro, Luigi; Holzinger, Brigitte; Hrubos-Strøm, Harald; Leger, Damien; Bolstad, Courtney J.; Nadorff, Michael R.; Plazzi, Giuseppe; Reis, Catia; Chan, Ngan Yin; Wing, Yun Kwok; Yordanova, Juliana; Dauvilliers, Yves; Partinen, Markku; Inoue, Yuichi (Journal article; Peer reviewed, 2023)Background Self-rated health (SRH) is widely recognized as a clinically significant predictor of subsequent mortality risk. Although COVID-19 may impair SRH, this relationship has not been extensively examined. The ... -
Estimation bias and agreement limits between two common self-report methods of habitual sleep duration in epidemiological surveys
Korman, Maria; Zarina, Daria; Tkachev, Vadim; Merikanto, Ilona; Bjorvatn, Bjørn; Bjelajac, Adrijana Koscec; Penzel, Thomas; Landtblom, Anne-Marie; Benedict, Christian; Chan, Ngan Yin; Wing, Yun Kwok; Dauvilliers, Yves; Morin, Charles M.; Matsui, Kentaro; Nadorff, Michael; Bolstad, Courtney J.; Chung, Frances; Mota-Rolim, Sérgio; De Gennaro, Luigi; Plazzi, Giuseppe; Yordanova, Juliana; Holzinger, Brigitte; Partinen, Markku; Reis, Cátia (Journal article; Peer reviewed, 2024)Accurate measurement of habitual sleep duration (HSD) is crucial for understanding the relationship between sleep and health. This study aimed to assess the bias and agreement limits between two commonly used short HSD ... -
Has the COVID-19 Pandemic Traumatized Us Collectively? The Impact of the COVID-19 Pandemic on Mental Health and Sleep Factors via Traumatization: A Multinational Survey
Holzinger, Brigitte; Nierwetberg, Franziska; Chung, Frances; Bolstad, Courtney J.; Bjorvatn, Bjørn; Chan, Ngan Yin; Dauvilliers, Yves; Espie, Colin A.; Han, Fang; Inoue, Yuichi; Leger, Damien; Macêdo, Tainá; Matsui, Kentaro; Merikanto, Ilona; Morin, Charles M.; Mota-Rolim, Sérgio A.; Partinen, Markku; Plazzi, Giuseppe; Penzel, Thomas; Sieminski, Mariusz; Wing, Yun Kwok; Scarpelli, Serena; Nadorff, Michael R.; De Gennaro, Luigi (Journal article; Peer reviewed, 2022)Purpose: The COVID-19 pandemic affects mental health and sleep, resulting in frequent nightmares. Therefore, identifying factors associated with nightmare frequency is important, as it can indicate mental health issues. ... -
How our Dreams Changed During the COVID-19 Pandemic: Effects and Correlates of Dream Recall Frequency - a Multinational Study on 19,355 Adults
Fränkl, Eirin; Scarpelli, Serena; Nadorff, Michael R.; Bjorvatn, Bjørn; Bolstad, Courtney J.; Chan, Ngan Yin; Chung, Frances; Dauvilliers, Yves; Espie, Colin A.; Inoue, Yuichi; Leger, Damien; Macedo, Taina; Matsui, Kentaro; Merikanto, Ilona; Morin, Charles M.; Mota-Rolim, Sérgio Arthuro; Partinen, Markku; Penzel, Thomas; Plazzi, Giuseppe; Sieminski, Mariusz; Wing, Yun Kwok; Gennaro, Luigi De; Holzinger, Brigitte (Journal article; Peer reviewed, 2021)Objective: Many have reported odd dreams during the pandemic. Given that dreams are associated with mental health, understanding these changes could provide crucial information about wellbeing during the pandemic. This ... -
Nightmares in People with COVID-19: Did Coronavirus Infect Our Dreams?
Scarpelli, Serena; Nadorff, Michael R.; Bjorvatn, Bjørn; Chung, Frances; Dauvilliers, Yves; Espie, Colin A.; Inoue, Yuichi; Matsui, Kentaro; Merikanto, Ilona; Morin, Charles M.; Penzel, Thomas; Sieminski, Mariusz; Fang, Han; Macêdo, Tainá; Mota-Rolim, Sérgio A.; Leger, Damien; Plazzi, Giuseppe; Chan, Ngan Yin; Partinen, Markku; Bolstad, Courtney J.; Holzinger, Brigitte; De Gennaro, Luigi (Journal article; Peer reviewed, 2022)Introduction: A growing number of studies have demonstrated that the coronavirus disease-19 (COVID-19) pandemic has severely affected sleep and dream activity in healthy people. To date, no investigation has examined dream ... -
Persistent short nighttime sleep duration is associated with a greater post-COVID risk in fully mRNA-vaccinated individuals
Xue, Pei; Merikanto, Ilona; Chung, Frances; Morin, Charles M.; Espie, Colin; Bjorvatn, Bjørn; Cedernaes, Jonathan; Landtblom, Anne-Marie; Penzel, Thomas; De Gennaro, Luigi; Holzinger, Brigitte; Matsui, Kentaro; Hrubos-Strøm, Harald; Korman, Maria; Leger, Damien; Mota-Rolim, Sérgio; Bolstad, Courtney J.; Nadorff, Michael; Plazzi, Giuseppe; Reis, Catia; Chan, Rachel Ngan Yin; Wing, Yun Kwok; Yordanova, Juliana; Bjelajac, Adrijana Koscec; Inoue, Yuichi; Partinen, Markku; Dauvilliers, Yves; Benedict, Christian (Journal article; Peer reviewed, 2023)Short nighttime sleep duration impairs the immune response to virus vaccination, and long nighttime sleep duration is associated with poor health status. Thus, we hypothesized that short (<6 h) and long (>9 h) nighttime ... -
Sleep and daytime problems during the COVID-19 pandemic and effects of coronavirus infection, confinement and financial suffering: a multinational survey using a harmonised questionnaire
Partinen, Markku; Holzinger, Brigitte; Morin, Charles M; Espie, Colin A.; Chung, F.; Penzel, Thomas; Benedict, Christian; Bolstad, Courtney J.; Cedernaes, Jonathan; Chan, Rachel Ngan Yin; Dauvilliers, Yves; De Gennaro, Luigi; Han, Fang; Inoue, Yuichi; Matsui, Kentaro; Leger, Damien; Cunha, Ana Suely; Merikanto, Ilona; Mota-Rolim, Sergio; Nadorff, Michael; Plazzi, Giuseppe; Schneider, Jules; Sieminski, Mariusz; Wing, Yun-Kwok; Bjorvatn, Bjørn (Journal article; Peer reviewed, 2021)Objectives Sleep is important for human health and well-being. No previous study has assessed whether the COVID-19 pandemic impacts sleep and daytime function across the globe. Methods This large-scale international ... -
Social Jetlag Changes During the COVID-19 Pandemic as a Predictor of Insomnia – A MultiNational Survey Study
Brandão, Luiz Eduardo Mateus; Martikainen, Teemu; Merikanto, Ilona; Holzinger, Brigitte; Morin, Charles M.; Espie, Colin A.; Bolstad, Courtney J.; Leger, Damien; Chung, Frances; Plazzi, Giuseppe; Dauvilliers, Yves; Matsui, Kentaro; De Gennaro, Luigi; Sieminski, Mariusz; Nadorff, Michael R.; Chan, Ngan Yin; Wing, Yun Kwok; Mota-Rolim, Sérgio Arthuro; Inoue, Yuichi; Partinen, Markku; Benedict, Christian; Bjorvatn, Bjørn; Cedernaes, Jonathan (Journal article; Peer reviewed, 2021)Purpose: Lifestyle and work habits have been drastically altered by restrictions due to the COVID-19 pandemic. Whether the associated changes in sleep timing modulate the risk of suffering from symptoms of insomnia, the ...