Torbjorn Akerstedt

Summary

Country: Sweden

Publications

  1. doi request reprint Having to stop driving at night because of dangerous sleepiness--awareness, physiology and behaviour
    Torbjorn Akerstedt
    Stress Research Institute, Stockholm University, Stockholm, Sweden Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
    J Sleep Res 22:380-8. 2013
  2. doi request reprint Predicting sleep quality from stress and prior sleep--a study of day-to-day covariation across six weeks
    Torbjorn Akerstedt
    Stress Research Institute, Stockholm University, 10691 Stockholm, Sweden
    Sleep Med 13:674-9. 2012
  3. doi request reprint Wakefulness in young and elderly subjects driving at night in a car simulator
    Arne Lowden
    Stress Research Institute, Stockholm University, SE 106 91 Stockholm, Sweden
    Accid Anal Prev 41:1001-7. 2009
  4. doi request reprint Sleep, sleepiness, and neurobehavioral performance while on watch in a simulated 4 hours on/8 hours off maritime watch system
    Wessel M A van Leeuwen
    Stress Research Institute, Stockholm University, Stockholm, Sweden
    Chronobiol Int 30:1108-15. 2013
  5. ncbi request reprint Driver impairment at night and its relation to physiological sleepiness
    Anna Anund
    Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
    Scand J Work Environ Health 34:142-50. 2008
  6. ncbi request reprint Fatigue in trans-Atlantic airline operations: diaries and actigraphy for two- vs. three-pilot crews
    Claire A Eriksen
    National Institute for Psychosocial Medicine, Karolinska Institutet, Stockholm, Sweden
    Aviat Space Environ Med 77:605-12. 2006
  7. doi request reprint Sleep and sleepiness: impact of entering or leaving shiftwork--a prospective study
    Torbjorn Akerstedt
    Stress Research Institute, University of Stockholm and Karolinska Institutet, Stockholm, Sweden
    Chronobiol Int 27:987-96. 2010
  8. doi request reprint Predicting changes in sleep complaints from baseline values and changes in work demands, work control, and work preoccupation--the WOLF-project
    Torbjorn Akerstedt
    Stress Research Institute, Stockholm University, Stockholm, Sweden
    Sleep Med 13:73-80. 2012
  9. pmc Work-related sleep disturbances and sickness absence in the Swedish working population, 1993-1999
    Hugo Westerlund
    Stress Research Institute, Stockholm University, Stockholm, Sweden
    Sleep 31:1169-77. 2008
  10. doi request reprint In-car countermeasures open window and music revisited on the real road: popular but hardly effective against driver sleepiness
    Johanna F A Schwarz
    The Stress Research Institute, Stockholm University, Stockholm, Sweden
    J Sleep Res 21:595-9. 2012

Detail Information

Publications66

  1. doi request reprint Having to stop driving at night because of dangerous sleepiness--awareness, physiology and behaviour
    Torbjorn Akerstedt
    Stress Research Institute, Stockholm University, Stockholm, Sweden Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
    J Sleep Res 22:380-8. 2013
    ..It was concluded that 44% of drivers during late-night driving became dangerously sleepy, and that this group showed higher perceived sleepiness and more sleep intrusions in the EEG/EOG. ..
  2. doi request reprint Predicting sleep quality from stress and prior sleep--a study of day-to-day covariation across six weeks
    Torbjorn Akerstedt
    Stress Research Institute, Stockholm University, 10691 Stockholm, Sweden
    Sleep Med 13:674-9. 2012
    ..The connection between stress and sleep is well established in cross-sectional questionnaire studies and in a few prospective studies. Here, the intention was to study the link between stress and sleep on a day-to-day basis across 42 days...
  3. doi request reprint Wakefulness in young and elderly subjects driving at night in a car simulator
    Arne Lowden
    Stress Research Institute, Stockholm University, SE 106 91 Stockholm, Sweden
    Accid Anal Prev 41:1001-7. 2009
    ..The effects could represent a mobilization of effort and a reorganization of brain firing pattern among older subjects, possibly reflecting better ability and effort to resist sleepiness...
  4. doi request reprint Sleep, sleepiness, and neurobehavioral performance while on watch in a simulated 4 hours on/8 hours off maritime watch system
    Wessel M A van Leeuwen
    Stress Research Institute, Stockholm University, Stockholm, Sweden
    Chronobiol Int 30:1108-15. 2013
    ..In addition, we showed that overtime work strongly increases sleepiness. Finally, a striking amount of participants fell asleep while on duty. ..
  5. ncbi request reprint Driver impairment at night and its relation to physiological sleepiness
    Anna Anund
    Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
    Scand J Work Environ Health 34:142-50. 2008
    ....
  6. ncbi request reprint Fatigue in trans-Atlantic airline operations: diaries and actigraphy for two- vs. three-pilot crews
    Claire A Eriksen
    National Institute for Psychosocial Medicine, Karolinska Institutet, Stockholm, Sweden
    Aviat Space Environ Med 77:605-12. 2006
    ..The aim was to compare intercontinental flights with two-pilot and three-pilot crews with respect to fatigue/sleepiness and sleep, as there is considerable economic pressure on the airlines to use two-pilot crews...
  7. doi request reprint Sleep and sleepiness: impact of entering or leaving shiftwork--a prospective study
    Torbjorn Akerstedt
    Stress Research Institute, University of Stockholm and Karolinska Institutet, Stockholm, Sweden
    Chronobiol Int 27:987-96. 2010
    ..9 [CI = 1.3-6.7]). These results suggest that entering and leaving shiftwork has a considerable impact on sleep and alertness. However, there is a need for large and more extended longitudinal studies to support our findings...
  8. doi request reprint Predicting changes in sleep complaints from baseline values and changes in work demands, work control, and work preoccupation--the WOLF-project
    Torbjorn Akerstedt
    Stress Research Institute, Stockholm University, Stockholm, Sweden
    Sleep Med 13:73-80. 2012
    ..The aim of this study was to evaluate new cases of poor sleep as a function of changes in reported work demands, work control, and work preoccupation...
  9. pmc Work-related sleep disturbances and sickness absence in the Swedish working population, 1993-1999
    Hugo Westerlund
    Stress Research Institute, Stockholm University, Stockholm, Sweden
    Sleep 31:1169-77. 2008
    ..To examine secular trends in work-related sleep disturbances and their association with sickness absence in the Swedish working population...
  10. doi request reprint In-car countermeasures open window and music revisited on the real road: popular but hardly effective against driver sleepiness
    Johanna F A Schwarz
    The Stress Research Institute, Stockholm University, Stockholm, Sweden
    J Sleep Res 21:595-9. 2012
    ..Thus, despite their popularity, opening the window and listening to music cannot be recommended as sole countermeasures against driver sleepiness...
  11. doi request reprint Assessment of a new dynamic light regimen in a nuclear power control room without windows on quickly rotating shiftworkers--effects on health, wakefulness, and circadian alignment: a pilot study
    Arne Lowden
    Stress Research Institute, Stockholm University, Stockholm, Sweden
    Chronobiol Int 29:641-9. 2012
    ..Nonetheless, it seems that appropriate dynamic light in rooms without windows during the dark Nordic season may promote alertness, sleep, and better adaptation to quickly rotating shiftwork...
  12. pmc Sleep homeostasis during repeated sleep restriction and recovery: support from EEG dynamics
    Torbjorn Akerstedt
    Stress Research Institute, University of Stockholm, Stockholm, Sweden
    Sleep 32:217-22. 2009
    ..The aim of the present study was to test the response to repeated partial sleep loss through detailed focus on spectral data and parts of sleep...
  13. doi request reprint Sleep loss and accidents--work hours, life style, and sleep pathology
    Torbjorn Akerstedt
    Departement of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
    Prog Brain Res 190:169-88. 2011
    ..Reduced sleep is mainly due to suboptimal work schedules (or to a suboptimal life style) or to sleep pathology. We have divided the present chapter into two areas...
  14. ncbi request reprint Disturbed sleep and fatigue as predictors of return from long-term sickness absence
    Torbjorn Akerstedt
    Stress Research Institute, Stockholm University, Stockholm, Sweden
    Ind Health 48:209-14. 2010
    ..34-0.90). Intermediate term sickness absence showed similar, but slightly weaker, results. The results indicate that disturbed sleep and fatigue are predictors of lack of return from long term and intermediate term sickness absence...
  15. doi request reprint The effect of violent and nonviolent video games on heart rate variability, sleep, and emotions in adolescents with different violent gaming habits
    Malena Ivarsson
    Stress Research Institute, Stockholm University, SE 106 91 Stockholm, Sweden
    Psychosom Med 75:390-6. 2013
    ..To study cardiac, sleep-related, and emotional reactions to playing violent (VG) versus nonviolent video games (NVG) in adolescents with different gaming habits...
  16. ncbi request reprint Snoring and the metabolic syndrome in women
    Constanze Leineweber
    Karolinska Institute, Department of Public Health Sciences, Box 220, 171 77 Stockholm, Sweden
    Sleep Med 4:531-6. 2003
    ..The main objective was to examine the association between metabolic syndrome, snoring and sleep quality among women...
  17. ncbi request reprint Comment on short-term variation in subjective sleepiness
    Claire A Eriksen
    Institute of Psychosocial Medicine and Karolinska Institutet, Stockholm, Sweden
    Percept Mot Skills 101:943-8. 2005
    ..It was concluded that there are large variations in sleepiness related to time of day and also to context and that sparse sampling of subjective sleepiness may miss much of this variation...
  18. ncbi request reprint Sleep and sleepiness in young individuals with high burnout scores
    Marie Söderström
    National Institute of Psychosocial Factors and Health, Stockholm, Sweden
    Sleep 27:1369-77. 2004
    ..The purpose was also to study the diurnal pattern of sleepiness, as well as ratings of work stress and mood in groups with different burnout scores...
  19. doi request reprint Reaction of sleepiness indicators to partial sleep deprivation, time of day and time on task in a driving simulator--the DROWSI project
    Torbjorn Akerstedt
    Stress Research Institute, Stockholm University, Stockholm, Sweden
    J Sleep Res 19:298-309. 2010
    ..However, individual differences are considerable and there is need for research on how to identify and predict individual differences in susceptibility to sleepiness...
  20. doi request reprint Sleep after mobile phone exposure in subjects with mobile phone-related symptoms
    Arne Lowden
    Stress Research Institute, Stockholm University, Sweden
    Bioelectromagnetics 32:4-14. 2011
    ..Furthermore, reported differences in sensitivity to mobile phone use were not reflected in sleep parameters...
  21. doi request reprint Stress vulnerability and the effects of moderate daily stress on sleep polysomnography and subjective sleepiness
    Helena Petersen
    Stress Research Institute, University of Stockholm and Karolinska Institutet, Stockholm, Sweden
    J Sleep Res 22:50-7. 2013
    ..It was concluded that moderate daily stress is associated with a moderate negative effect on sleep sleep efficiency and fragmentation. A slightly stronger effect was seen in the sensitive group...
  22. ncbi request reprint Impaired alertness and performance driving home from the night shift: a driving simulator study
    Torbjorn Akerstedt
    Institute for Psychosocial Medicine, Karolinska Insitutet, Stockholm, Sweden
    J Sleep Res 14:17-20. 2005
    ..102 to 0.143 s), and increased subjective sleepiness. The results indicate severe postnight shift effects on sleepiness and driving performance...
  23. doi request reprint Police officers attitude to different shift systems: association with age, present shift schedule, health and sleep/wake complaints
    Goran Kecklund
    Stress Research Institute, Stockholm University, SE 106 91 Stockholm, Sweden
    Appl Ergon 39:565-71. 2008
    ....
  24. ncbi request reprint Sleep length as a function of morning shift-start time in irregular shift schedules for train drivers: self-rated health and individual differences
    Michael Ingre
    Stress Research Institute, Stockholm University, Sweden
    Chronobiol Int 25:349-58. 2008
    ....
  25. ncbi request reprint Sleepiness and performance in response to repeated sleep restriction and subsequent recovery during semi-laboratory conditions
    John Axelsson
    Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
    Chronobiol Int 25:297-308. 2008
    ..Moreover, it is suggested to measure sleepiness in a standardized situation so as to minimize the influences of contextual factors...
  26. doi request reprint Accounting for partial sleep deprivation and cumulative sleepiness in the Three-Process Model of alertness regulation
    Torbjorn Akerstedt
    Stress Research Institute, University of Stockholm, Stockholm, Sweden
    Chronobiol Int 25:309-19. 2008
    ..2 on the 1-21 unit scale. It was concluded that the accumulation of sleep loss effects on subjective sleepiness may be accounted for by making the recovery function linear below a certain point on the otherwise exponential function...
  27. doi request reprint 20th International Symposium on Shiftwork and Working Time: biological mechanisms, recovery, and risk management in the 24-h society
    Goran Kecklund
    Stress Research Institute, Stockholm Unversity, Stockholm, Sweden
    Chronobiol Int 29:531-6. 2012
    ..The majority of the papers are observational field studies, including some of large sample size, and three studies are well-designed laboratory experiments...
  28. doi request reprint Insufficient sleep predicts clinical burnout
    Marie Söderström
    Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
    J Occup Health Psychol 17:175-83. 2012
    ..The results indicate that insufficient sleep, preoccupation with thoughts of work during leisure time, and high work demands are risk factors for subsequent burnout. The results suggest a chain of causation...
  29. ncbi request reprint Different levels of work-related stress and the effects on sleep, fatigue and cortisol
    Anna Dahlgren
    National Institute for Psychosocial Medicine, Stockholm, Sweden
    Scand J Work Environ Health 31:277-85. 2005
    ..The aim of the study was to relate different levels of work stress to measures of sleep and the diurnal pattern of salivary cortisol and subjective sleepiness...
  30. ncbi request reprint Subjective health perception in healthy young men changes in response to experimentally restricted sleep and subsequent recovery sleep
    Mats Lekander
    Stress Research Institute, Stockholm University, Stockholm, Sweden Osher Center for Integrative Medicine and Division of Psychology, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden Electronic address
    Brain Behav Immun 34:43-6. 2013
    ..Larger experimental studies would be beneficial to further distinguish causation from association regarding the underpinnings of subjective health...
  31. doi request reprint The daily variation in sleepiness and its relation to the preceding sleep episode--a prospective study across 42 days of normal living
    Torbjorn Akerstedt
    Stress Research Institute, Stockholm University, Stockholm, Sweden
    J Sleep Res 22:258-65. 2013
    ..It was concluded that the main determinants of daytime sleepiness in a real-life day-to-day context were short sleep, poor sleep and early rising, and that days with high sleepiness ended with ratings of poorer health...
  32. pmc Cross-lagged relationships between workplace demands, control, support, and sleep problems
    Linda L Magnusson Hanson
    Stress Research Institute, Stockholm University, Stockholm, Sweden
    Sleep 34:1403-10. 2011
    ..This study examines longitudinal, bidirectional relationships between work characteristics and sleep problems...
  33. ncbi request reprint The effects of driving situation on sleepiness indicators after sleep loss: a driving simulator study
    Anna Anund
    Clinical Neuroscience, Karolinska Institute, SE 177 71 Stockholm, Sweden
    Ind Health 47:393-401. 2009
    ..This suggests that it is important to monitor the driving situation in field operational tests of sleepy driving...
  34. doi request reprint Early morning work--prevalence and relation to sleep/wake problems: a national representative survey
    Torbjorn Akerstedt
    Stress Research Institute, Stockholm University, and Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
    Chronobiol Int 27:975-86. 2010
    ..However, difficulties in waking and disturbed sleep did not change with advanced start times. It was concluded that early start times are common and are associated with sleep problems and fatigue...
  35. ncbi request reprint Subjective sleepiness, simulated driving performance and blink duration: examining individual differences
    Michael Ingre
    National Institute for Psychosocial Medicine, Stockholm, Sweden
    J Sleep Res 15:47-53. 2006
    ..The results have implications for any application that needs prediction at the subject level (e.g. driver fatigue warning systems) as well as for research design and the interpretation of group average data...
  36. doi request reprint Predicting road crashes from a mathematical model of alertness regulation--The Sleep/Wake Predictor
    Torbjorn Akerstedt
    Stress Research Institute, Stockholm University and Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
    Accid Anal Prev 40:1480-5. 2008
    ..05 g/dl). It was concluded that the model is a good predictor of road crashes beyond that of alcohol level, and that interaction between the two carries a very high risk...
  37. ncbi request reprint Variation in sleepiness during early morning shifts: a mixed model approach to an experimental field study of train drivers
    Michael Ingre
    National Institute for Psychosocial Medicine IPM, Stockholm, Sweden
    Chronobiol Int 21:973-90. 2004
    ..Long drives without stops and other monotonous situations should have a higher risk rating for severe sleepiness in shifts with an early start before 06:00 h, compared to shifts that begin 2 h later...
  38. ncbi request reprint Subjective sleepiness and accident risk avoiding the ecological fallacy
    Michael Ingre
    National Institute for Psychosocial Medicine IPM, and Department of Psychology, Stockholm University, Stockholm, Sweden
    J Sleep Res 15:142-8. 2006
    ..There were large individual differences in event propensity that complicates the prediction of absolute accident risk for individual subjects...
  39. ncbi request reprint Predicting long-term sickness absence from sleep and fatigue
    Torbjorn Akerstedt
    Institute for Psychosocial Medicine, Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
    J Sleep Res 16:341-5. 2007
    ..The results indicate that disturbed sleep and fatigue are predictors of long-term absence and it is suggested that impaired sleep may be part of a chain of causation, considering its effects on fatigue...
  40. ncbi request reprint Aircrew fatigue in trans-Atlantic morning and evening flights
    Claire Anne Eriksen
    National Institute for Psychosocial Factors and Health IPM, Karolinska Institutet, Stockholm, Sweden
    Chronobiol Int 23:843-58. 2006
    ..Evening flights involve higher levels of sleepiness than morning flights, presumably because of the close proximity in time to the circadian trough of alertness...
  41. doi request reprint Clinically diagnosed insomnia and risk of all-cause and diagnosis-specific sickness absence: a nationwide Swedish prospective cohort study
    Catarina Jansson
    1Division of Insurance Medicine, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
    Scand J Public Health 41:712-21. 2013
    ..There is, however, no previous nationwide cohort study of clinically diagnosed insomnia and risk of incident sickness absence...
  42. ncbi request reprint Snoring and progression of coronary artery disease: The Stockholm Female Coronary Angiography Study
    Constanze Leineweber
    Karolinska Institute, Department of Public Health Sciences, Stockholm, Sweden
    Sleep 27:1344-9. 2004
    ..The aim of the study was to investigate the influence of snoring in combination with feelings of tiredness on the 3-year progression of atherosclerosis in women with cardiovascular disease...
  43. ncbi request reprint Impaired sleep after bedtime stress and worries
    Torbjorn Akerstedt
    Institute for Psychosocial Medicine and Karolinska Institutet, Stockholm, Sweden
    Biol Psychol 76:170-3. 2007
    ..It was concluded that moderate increases in stress/worries at bedtime are associated with moderately impaired sleep...
  44. doi request reprint Disturbed sleep in shift workers, day workers, and insomniacs
    Torbjorn Akerstedt
    Stress Research Institute, University of Stockholm, Karolinska Institutet, Stockholm, Sweden
    Chronobiol Int 25:333-48. 2008
    ..The results suggest, at least with the present questionnaire methodology, that shift work does not appear to be a major source of sleep disturbances and that their complaint levels bear no resemblance to those seen in insomniac patients...
  45. ncbi request reprint Individual differences in the diurnal cortisol response to stress
    Anna Dahlgren
    National Institute for Psychosocial Medicine, Stockholm, Sweden
    Chronobiol Int 21:913-22. 2004
    ..The results suggest that one component modulating the cortisol response might be the level of exhaustion, probably related to work overload. Higher levels of stress in exhausted individuals might suppress morning cortisol levels...
  46. doi request reprint Playing a violent television game affects heart rate variability
    Malena Ivarsson
    Stress Research Institute, Stockholm University, Stockholm, Sweden
    Acta Paediatr 98:166-72. 2009
    ..To investigate how playing a violent/nonviolent television game during the evening affects sympathetic and parasympathetic reactions during and after playing as well as sleep quality during the night after playing...
  47. doi request reprint Periodic self-rostering in shift work: correspondence between objective work hours, work hour preferences (personal fit), and work schedule satisfaction
    Michael Ingre
    Stress Research Institute, Stockholm University, SE 106 91 Stockholm, Sweden
    Scand J Work Environ Health 38:327-36. 2012
    ..We also examined the association between personal fit and satisfaction with the work schedule and preference for a fixed and regular shift schedule, respectively...
  48. ncbi request reprint Less effective executive functioning after one night's sleep deprivation
    Jens P Nilsson
    National Institute for Psychosocial Medicine, Stockholm, Sweden
    J Sleep Res 14:1-6. 2005
    ..There were no group differences on psychomotor vigilance, verbal or visuo-spatial working memory. This extends previous knowledge of performance effects of SD, and may be of special importance for individuals with cognitive work tasks...
  49. doi request reprint Do sleep, stress, and illness explain daily variations in fatigue? A prospective study
    Torbjorn Akerstedt
    Stress Research Institute, Stockholm University, Stockholm, Sweden Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden Electronic address
    J Psychosom Res 76:280-5. 2014
    ..The purpose of present study was to investigate the relationships between the daily variations of fatigue with sleep during the previous night, stress or disease symptoms during the same day - across 42 consecutive days of normal life...
  50. ncbi request reprint Sleep polysomnography and reported stress across 6 weeks
    Torbjorn Akerstedt
    Stress Research Institute, Stockholm University, Sweden
    Ind Health 52:36-42. 2014
    ..It was concluded that moderately increased stress over a longer period of time is related to moderate signs of disturbed sleep during that period. This may be of importance when considering stress as a work environment problem. ..
  51. ncbi request reprint Hormonal changes in satisfied and dissatisfied shift workers across a shift cycle
    John Axelsson
    National Institute for Psychosocial Factors and Health, Stockholm, Sweden
    J Appl Physiol (1985) 95:2099-105. 2003
    ..Furthermore, morning cortisol was reduced across a shift cycle. It is suggested that reduced testosterone levels may be part of a mechanism of shift work maladjustment...
  52. ncbi request reprint Performance and sleepiness during a 24 h wake in constant conditions are affected by diet
    Arne Lowden
    National Institute for Psychosocial Medicine, Karolinska Institutet, Stockholm, Sweden
    Biol Psychol 65:251-63. 2004
    ..The study demonstrated that the HC-diet caused larger oscillation in performance and increased sleepiness as compared to HF-diet throughout day and night...
  53. ncbi request reprint Suppression of sleepiness and melatonin by bright light exposure during breaks in night work
    Arne Lowden
    IPM National Institute for Psychosocial Medicine, Karolinska Institutet, Stockholm, Sweden
    J Sleep Res 13:37-43. 2004
    ..Daytime melatonin during the readaptation after night work remained unaffected. The present findings demonstrate the feasibility and benefits of photic stimulation in industrial settings to increase adaptation to night work...
  54. doi request reprint Effects of mindfulness training on levels of cortisol in cancer patients
    Richard Bränström
    Dept of Oncology Pathology, Karolinska Institute, Stockholm, Sweden
    Psychosomatics 54:158-64. 2013
    ....
  55. ncbi request reprint Shift work and mortality
    Torbjorn Akerstedt
    National Institute for Psychosocial Factors and Health and Department of Public Health Sciences, Karolinska Institute, Stockholm, Sweden
    Chronobiol Int 21:1055-61. 2004
    ..41. No other significant effects were found. It is concluded that blue-collar shift work is not related to mortality, but that risk of death is increased for women white-collar shift workers compared to women white-collar day workers...
  56. ncbi request reprint Predictions from the three-process model of alertness
    Torbjorn Akerstedt
    IPM, Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
    Aviat Space Environ Med 75:A75-83. 2004
    ..The model is currently being used to evaluate work/rest schedules for navy, airline and railway applications. It is also used for teaching sleep/wake regulation and for generating research hypotheses...
  57. doi request reprint Effects of context on sleepiness self-ratings during repeated partial sleep deprivation
    Torbjorn Akerstedt
    Stress Research Institute, Stockholm University, Stockholm, Sweden
    Chronobiol Int 25:271-8. 2008
    ..1 KSS units compared to the level of sleepiness self-rated at the end of the reaction-time test. Thus, the results of this study indicate that the context of a sleepiness rating affects the outcome of the rating...
  58. pmc Prevalence of night eating in obese and nonobese twins
    Sanna Tholin
    Department of Public Health Sciences, Karolinska Institute, Stockholm, Sweden
    Obesity (Silver Spring) 17:1050-5. 2009
    ..It revealed that NE is 2.5 and 2.8 times more common in obese men and women compared to normal weight men and women. Furthermore that NE is associated with binge eating and sleep-related problems...
  59. doi request reprint Shift work at young age is associated with increased risk for multiple sclerosis
    Anna Karin Hedström
    Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden
    Ann Neurol 70:733-41. 2011
    ..Environmental factors play a prominent role in multiple sclerosis (MS) etiology. The aim of this study was to investigate the potential association between shift work and MS risk, which has previously never been investigated...
  60. ncbi request reprint Subjective sleepiness is a sensitive indicator of insufficient sleep and impaired waking function
    Torbjorn Akerstedt
    Stress Research Institute, Stockholm University and Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
    J Sleep Res 23:240-52. 2014
    ..In summary, subjective ratings of sleepiness as described here is as sensitive and valid an indicator of sleepiness as objective measures, and particularly suitable for field studies. ..
  61. pmc Effects of sustained sleep restriction on mitogen-stimulated cytokines, chemokines and T helper 1/ T helper 2 balance in humans
    John Axelsson
    Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden Osher Center for Integrative Medicine, Karolinska Institutet, Stockholm, Sweden Stress Research Institute, Stockholm University, Stockholm, Sweden
    PLoS ONE 8:e82291. 2013
    ..Since little is known about more long-term effects, we investigated how five days of sleep restriction would affect pro-inflammatory, chemotactic, Th1- and Th2 cytokine secretion...
  62. ncbi request reprint Poor sleep increases the prospective risk for recurrent events in middle-aged women with coronary disease. The Stockholm Female Coronary Risk Study
    Constanze Leineweber
    Department of Public Health Sciences, Karolinska Institute, Box 220, 17177, Stockholm, Sweden
    J Psychosom Res 54:121-7. 2003
    ..We investigated the prognostic impact of sleep complaints in women with CHD and also examined whether the association between sleep problems and cardiac events could be explained by depression...
  63. ncbi request reprint Microarousals during sleep are associated with increased levels of lipids, cortisol, and blood pressure
    Mirjam Ekstedt
    Department of Public Health Science, Karolinska Institutet, Stockholm, Sweden
    Psychosom Med 66:925-31. 2004
    ..A second purpose was to relate the number of arousals to mood, stress, work characteristics, and other possible predictors in daily life...
  64. ncbi request reprint The effects of 884 MHz GSM wireless communication signals on headache and other symptoms: an experimental provocation study
    Lena Hillert
    Department of Public Health Sciences, Division of Occupational Medicine, Karolinska Institutet, Stockholm, Sweden
    Bioelectromagnetics 29:185-96. 2008
    ..The current study indicates a need to better characterize study participants in mobile phone exposure studies and differences between symptom and non-symptom groups...
  65. pmc Novel biochemical markers of psychosocial stress in women
    Marie Asberg
    Department of Clinical Sciences, Karolinska Institute, Stockholm, Sweden
    PLoS ONE 4:e3590. 2009
    ..Prolonged psychosocial stress is a condition assessed through self-reports. Here we aimed to identify biochemical markers for screening and early intervention in women...
  66. ncbi request reprint Effect of accumulated night work during the working lifetime, on subjective health and sleep in monozygotic twins
    Michael Ingre
    National Institute for Psychosocial Medicine IPM, Stockholm, Sweden
    J Sleep Res 13:45-8. 2004
    ..67) and disturbed sleep (RR = 2.83) indicating a higher risk of developing complaints to former night workers. There was neither a dose-dependent effect of night work nor an interaction effect with gender observed...