Search

Your search keyword '"Bjorvatn, Bjørn"' showing total 500 results
Start Over Author "Bjorvatn, Bjørn" Search Limiters Academic (Peer-Reviewed) Journals
500 results on '"Bjorvatn, Bjørn"'

1. Associations between obesity, a composite risk score for probable long COVID, and sleep problems in SARS-CoV-2 vaccinated individuals

Author

Xue, Pei, Merikanto, Ilona, Delale, Eva A., Bjelajac, Adrijana, Yordanova, Juliana, Chan, Rachel N. Y., Korman, Maria, Mota-Rolim, Sérgio A., Landtblom, Anne-Marie, Matsui, Kentaro, Reis, Catia, Penzel, Thomas, Inoue, Yuichi, Nadorff, Michael R., Holzinger, Brigitte, Morin, Charles M., Espie, Colin A., Plazzi, Giuseppe, De Gennaro, Luigi, Chung, Frances, Bjorvatn, Bjørn, Wing, Yun Kwok, Dauvilliers, Yves, Partinen, Markku, and Benedict, Christian

Published
2024
Full Text
View/download PDF

4. Estimation bias and agreement limits between two common self-report methods of habitual sleep duration in epidemiological surveys

Author

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, and Reis, Cátia

Published
2024
Full Text
View/download PDF

7. Associations between changes in habitual sleep duration and lower self-rated health among COVID-19 survivors: findings from a survey across 16 countries/regions

Author

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, and Inoue, Yuichi

Published
2023
Full Text
View/download PDF

8. Persistent short nighttime sleep duration is associated with a greater post-COVID risk in fully mRNA-vaccinated individuals

Author

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, and Benedict, Christian

Published
2023
Full Text
View/download PDF

10. The association of insomnia with long COVID: An international collaborative study (ICOSS-II)

Author

Chen, Si-Jing, Morin, Charles M., Ivers, Hans, Wing, Yun Kwok, Partinen, Markku, Merikanto, Ilona, Holzinger, Brigitte, Espie, Colin A., De Gennaro, Luigi, Dauvilliers, Yves, Chung, Frances, Yordanova, Juliana, Vidović, Domagoj, Reis, Catia, Plazzi, Giuseppe, Penzel, Thomas, Nadorff, Michael R., Matsui, Kentaro, Mota-Rolim, Sergio, Leger, Damien, Landtblom, Anne-Marie, Korman, Maria, Inoue, Yuichi, Hrubos-Strøm, Harald, Chan, Ngan Yin, Bjelajac, Adrijana Koscec, Benedict, Christian, and Bjorvatn, Bjørn

Published
2023
Full Text
View/download PDF

12. Association between hypersomnolence and the COVID-19 pandemic: The International COVID-19 Sleep Study (ICOSS)

Author

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, and Dauvilliers, Yves

Published
2023
Full Text
View/download PDF

20. Acute effects of a simulated quick return on subjective sleepiness, mood, and cognitive performance: A laboratory crossover controlled trial.

Author

Holmelid, Øystein, Harris, Anette, Pallesen, Ståle, Bjorvatn, Bjørn, Vedaa, Øystein, Waage, Siri, Nielsen, Morten Birkeland, Djupedal, Ingebjørg Louise Rockwell, and Sunde, Erlend

Subjects
COGNITIVE processing speed, COGNITIVE ability, WORKING hours, CROSSOVER trials, SLEEP deprivation
Abstract

Sleep loss due to short time off between shifts has been proposed as a mechanism contributing to impaired functioning in occupational settings. This laboratory crossover trial (ClinicalTrials.gov identifier: NCT05162105, N = 66) compared subjective sleepiness, mood, and cognitive performance on a day shift after an evening shift with only 8 h off between shifts (quick return, QR) to a day shift after another day shift with 16 h off between shifts (control). Results indicated higher subjective sleepiness (Karolinska Sleepiness Scale) during the QR condition compared to the control condition (p < 0.001). No significant differences were found on mood (Positive and Negative Affect Schedule) and cognitive performance (Psychomotor Vigilance- and Digit Symbol Substitution Test) between the conditions. Findings of increased subjective sleepiness corroborate previous field studies. This trial is to our knowledge the first to compare mood and cognitive performance after a QR to a longer shift transition using an experimental design. Future research should explore the effects of accumulated sleep loss associated with QRs (e.g. having several QRs within a short time period) on behavioral outcomes. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

22. Insomnia, anxiety, and depression during the COVID-19 pandemic: an international collaborative study

Author

Morin, Charles M., Bjorvatn, Bjørn, Chung, Frances, Holzinger, Brigitte, Partinen, Markku, Penzel, Thomas, Ivers, Hans, Wing, Yun Kwok, Chan, Ngan Yin, Merikanto, Ilona, Mota-Rolim, Sergio, Macêdo, Tainá, De Gennaro, Luigi, Léger, Damien, Dauvilliers, Yves, Plazzi, Giuseppe, Nadorff, Michael R., Bolstad, Courtney J., Sieminski, Mariusz, Benedict, Christian, Cedernaes, Jonathan, Inoue, Yuchi, Han, Fang, and Espie, Colin A.

Published
2021
Full Text
View/download PDF

24. How to schedule night shift work in order to reduce health and safety risks

Author

Garde, Anne Helene, Begtrup, Luise, Bjorvatn, Bjørn, Bonde, Jens Peter, Hansen, Johnni, Hansen, Åse Marie, Härmä, Mikko, Jensen, Marie Aarrebo, Kecklund, Göran, Kolstad, Henrik A, Larsen, Ann Dyreborg, Lie, Jenny Anne, Moreno, Claudia RC, Nabe-Nielsen, Kirsten, and Sallinen, Mikael

Published
2020

37. The associations between different types of infections and circadian preference and shift work.

Author

Bjorvatn, Bjørn, Waage, Siri, Emberland, Knut Erik, Litleskare, Sverre, Rebnord, Ingrid K., Forthun, Ingeborg, and Rortveit, Guri

Subjects
*MORNINGNESS-Eveningness Questionnaire, *CHRONOTYPE, *SHIFT systems, *EYE infections, *SLEEP interruptions, *SEXUALLY transmitted diseases
Abstract

Disturbed sleep and circadian disruption are reported to increase the risk of infections. People with an evening circadian preference and night workers typically report insufficient sleep, and the aims of the present study were to investigate possible associations between various types of infections and circadian preference and shift work status. Data were collected from an online cross-sectional survey of 1023 participants recruited from the Norwegian practice-based research network in general practice – PraksisNett. The participants completed questions about circadian preference (morning type, intermediate type, evening type), work schedule (day work, shift work without nights, shift work with night shifts), and whether they had experienced infections during the last three months (common cold, throat infection, ear infection, sinusitis, pneumonia/bronchitis, COVID-19, influenza-like illness, skin infection, gastrointestinal infection, urinary infection, venereal disease, eye infection). Data were analyzed with chi-square tests and logistic regression analyses with adjustment for relevant confounders (gender, age, marital status, country of birth, children living at home, and educational level). Results showed that evening types more often reported venereal disease compared to morning types (OR = 4.01, confidence interval (CI) = 1.08–14.84). None of the other infections were significantly associated with circadian preference. Shift work including nights was associated with higher odds of influenza-like illness (OR = 1.97, CI = 1.10–3.55), but none of the other infections. In conclusion, neither circadian preference nor shift work seemed to be strongly associated with risk of infections, except for venereal disease (more common in evening types) and influenza-like illness (more common in night workers). Longitudinal studies are needed for causal inferences. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

48. The European Insomnia Guideline: An update on the diagnosis and treatment of insomnia 2023.

Author

Riemann, Dieter, Espie, Colin A., Altena, Ellemarije, Arnardottir, Erna Sif, Baglioni, Chiara, Bassetti, Claudio L. A., Bastien, Celyne, Berzina, Natalija, Bjorvatn, Bjørn, Dikeos, Dimitris, Dolenc Groselj, Leja, Ellis, Jason G., Garcia‐Borreguero, Diego, Geoffroy, Pierre A., Gjerstad, Michaela, Gonçalves, Marta, Hertenstein, Elisabeth, Hoedlmoser, Kerstin, Hion, Tuuliki, and Holzinger, Brigitte

Subjects
INSOMNIA, BENZODIAZEPINE receptors, DROWSINESS, EXERCISE therapy, SLEEP disorders, MOVEMENT disorders, OLANZAPINE, OREXINS, TRAZODONE
Abstract

Summary: Progress in the field of insomnia since 2017 necessitated this update of the European Insomnia Guideline. Recommendations for the diagnostic procedure for insomnia and its comorbidities are: clinical interview (encompassing sleep and medical history); the use of sleep questionnaires and diaries (and physical examination and additional measures where indicated) (A). Actigraphy is not recommended for the routine evaluation of insomnia (C), but may be useful for differential‐diagnostic purposes (A). Polysomnography should be used to evaluate other sleep disorders if suspected (i.e. periodic limb movement disorder, sleep‐related breathing disorders, etc.), treatment‐resistant insomnia (A) and for other indications (B). Cognitive‐behavioural therapy for insomnia is recommended as the first‐line treatment for chronic insomnia in adults of any age (including patients with comorbidities), either applied in‐person or digitally (A). When cognitive‐behavioural therapy for insomnia is not sufficiently effective, a pharmacological intervention can be offered (A). Benzodiazepines (A), benzodiazepine receptor agonists (A), daridorexant (A) and low‐dose sedating antidepressants (B) can be used for the short‐term treatment of insomnia (≤ 4 weeks). Longer‐term treatment with these substances may be initiated in some cases, considering advantages and disadvantages (B). Orexin receptor antagonists can be used for periods of up to 3 months or longer in some cases (A). Prolonged‐release melatonin can be used for up to 3 months in patients ≥ 55 years (B). Antihistaminergic drugs, antipsychotics, fast‐release melatonin, ramelteon and phytotherapeutics are not recommended for insomnia treatment (A). Light therapy and exercise interventions may be useful as adjunct therapies to cognitive‐behavioural therapy for insomnia (B). [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

49. Self‐reported sleep fragmentation and sleep duration and their association with cognitive function in PROTECT, a large digital community‐based cohort of people over 50.

Author

Aakre, Jon Arild, Schulz, Jörn, Ballard, Clive, Corbett, Anne, Bjorvatn, Bjørn, Aarsland, Dag, Creese, Byron, Hampshire, Adam, Brooker, Helen, and Testad, Ingelin

Subjects
COGNITION disorder risk factors, SLEEP quality, STATISTICS, CONFIDENCE intervals, SELF-evaluation, CROSS-sectional method, COGNITION, REGRESSION analysis, SLEEP duration, SLEEP disorders, RISK assessment, EPISODIC memory, DESCRIPTIVE statistics, SLEEP deprivation, RESEARCH funding, LONGITUDINAL method, DISEASE complications, OLD age
Abstract

Objective: Sleep is vital for normal cognitive function in daily life, but is commonly disrupted in older adults. Poor sleep can be detrimental to mental and physical health, including cognitive function. This study assessed the association between self‐reported short (<6 h) and long (>9 h) sleep duration and sleep fragmentation (3≥ nightly awakenings) in cognitive function. Methods: Cross‐sectional data from 8508 individuals enroled in the PROTECT study aged 50 and above formed the basis of the univariate linear regression analysis conducted on four cognitive outcomes assessing visuospatial episodic memory (VSEM), spatial working memory, verbal working memory (VWM), and verbal reasoning (VR). Results: Short (ß = −0.153, 95% CI [−0.258, −0.048], p = 0.004) and long sleep duration (ß = −0.459, 95% CI [−0.826, −0.091], p = 0.014) were significantly associated with poorer cognitive performance in VWM. Long sleep duration (ß = −2.986, 95% CI [−5.453, −0.518], p = 0.018) was associated with impaired VR. Short sleep (ß = −0.133, 95% CI [−0.196, −0.069], p = <0.001) and sleep fragmentation (ß = −0.043, 95% CI [−0.085, −0.001], p = 0.043) were associated with reduced VSEM. These associations remained significant when including other established risk factors for dementia and cognitive decline (e.g., depression, hypertension). Conclusions: Our findings suggest that short and long sleep durations and fragmented sleep, may be risk factors for a decline in cognitive processes such as working memory, VR and episodic memory thus might be potential targets for interventions to maintain cognitive health in ageing. Key points: This study assessed the association between self‐reported short (<6 h) and long (>9 h) sleep duration and sleep fragmentation (3 or more nightly awakenings) in cognitive function.Univariate linear regression analysis indicated that short and long sleep duration, and sleep fragmentation impaired cognitive processes such as working memory, verbal reasoning (VR) and episodic memory in individuals aged 50+, even when including other established risk factors for dementia and cognitive decline, such as low educational level, hearing loss, traumatic brain injury, hypertension, diabetes, alcohol consumption, obesity, smoking, depression, social isolation, and physical inactivity.Both sleep duration and sleep fragmentation are highlighted as potential risk factors for reduced cognitive function and might be a possible target for interventions to maintain cognitive health in ageing. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results