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Arne LowdenDocent

Om mig

Arne arbetar som sömn- och stressforskare och hans forskningsprofil är ”dygnsrytmer, ljusbeteende, sömn ”. Med sömn som specialitet är Arne för närvarande en av 30 certifierade sömnspecialister idag verksamma i Sverige. Han har framförallt studerat omställningsbesvär för skiftarbetare och flygande personal. Vidare har han gjort studier av självvalda arbetstider, genomfört experimentella studier av nutrition och sömn samt studerat hur vakenhet, lärande och prestation kan förbättras i skolan. Den senaste tiden har han ägnat åt studier som innefattar bl.a. effekter på sömn och återhämtning utifrån ljuspåverkan i s.k. ljusrum, ljus i skolan, ljussättning i fönsterlösa rum, kör-beteende nattetid hos yngre och äldre förare samt effekter av mobiltelefonanvändning på sömn. Arne är även aktiv som lärare, bl.a. som ämnesansvarig för sömn på distanskursen ”Livsstil och Hälsa” vid SLU och momentansvarig för kursen ”Arbetspsykologi och hälsa” på Psykologprogrammet vid Karolinska Institutet. Han har aktivt deltagit i flera konferenser nationellt och internationellt samt tagit fram utbildningsmaterial till många utbildningar, bl.a. ”Skiftarbetarkörkort” som ges ut i samarbete med Prevent och ”Mat och sömnskola” från Mjölkfrämjandet.

Utbildning

Fil.dr. i psykologi 1999. Ackrediterad sömnspecialist 2010.

Forskningsprojekt

Publikationer

I urval från Stockholms universitets publikationsdatabas

  • Effects of evening exposure to electromagnetic fields emitted by 3G mobile phones on health and night sleep EEG architecture

    2019. Arne Lowden (et al.). Journal of Sleep Research 28 (4)

    Artikel

    Studies on sleep after exposure to radiofrequency electromagnetic fields have shown mixed results. We investigated the effects of double-blind radiofrequency exposure to 1,930-1,990 MHz, UMTS 3G signalling standard, time-averaged 10 g specific absorption rate of 1.6 W kg(-1) on self-evaluated sleepiness and objective electroencephalogram architecture during sleep. Eighteen subjects aged 18-19 years underwent 3.0 hr of controlled exposure on two consecutive days 19:45-23:00 hours (including 15-min break); active or sham prior to sleep, followed by full-night 7.5 hr polysomnographic recordings in a sleep laboratory. In a cross-over design, the procedure was repeated a week later with the second condition. The results for sleep electroencephalogram architecture showed no change after radiofrequency exposure in sleep stages compared with sham, but power spectrum analyses showed a reduction of activity within the slow spindle range (11.0-12.75 Hz). No differences were found for self-evaluated health symptoms, performance on the Stroop colour word test during exposure or for sleep quality. These results confirm previous findings that radiofrequency post-exposure in the evening has very little influence on electroencephalogram architecture but possible on spindle range activity.

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  • Reduced melatonin synthesis in pregnant night workers

    2019. P. A. Nehme (et al.). Medical Hypotheses 132

    Artikel

    Several novel animal studies have shown that intrauterine metabolic programming can be modified in the event of reduced melatonin synthesis during pregnancy, leading to glucose intolerance and insulin resistance in the offspring. It is therefore postulated that female night workers when pregnant may expose the offspring to unwanted health threats. This may be explained by the fact that melatonin is essential for regulating energy metabolism and can influence reproductive activity. Moreover, the circadian misalignment caused by shift work affects fertility and the fetus, increasing the risk of miscarriage, premature birth and low birth weight, phenomena observed in night workers. Thus, we hypothesize that light-induced melatonin suppression as a result of night work may alter intrauterine metabolic programming in pregnant women, potentially leading to metabolic disorders in their offspring.

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  • Working Time Society consensus statements

    2019. Arne Lowden (et al.). Industrial Health 57 (2), 213-227

    Artikel

    Interventions and strategies to improve health through the management of circadian (re) adaptation have been explored in the field, and in both human and animal laboratory manipulations of shiftwork. As part of an initiative by the Working Time Society (WTS) and International Committee on Occupational Health (ICOH), this review summarises the literature on the management of circadian (re) adaption using bright light treatment. Recommendations to maximise circadian adaptation are summarised for practitioners based on a variety of shiftwork schedules. In slowly rotating night shift schedules bright light appears most suitable when used in connection with the first three night shifts. These interventions are improved when combined with orange glasses (to block blue-green light exposure) for the commute home. Non-shifting strategies involve a lower dosage of light at night and promoting natural daylight exposure during the day (also recommended for day shifts) in acordance with the phase and amplitude response curves to light in humans.

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  • Delayed Sleep in Winter Related to Natural Daylight Exposure among Arctic Day Workers

    2018. Arne Lowden (et al.).

    Artikel

    Natural daylight exposures in arctic regions vary substantially across seasons. Negative consequences have been observed in self-reports of sleep and daytime functions during the winter but have rarely been studied in detail. The focus of the present study set out to investigate sleep seasonality among indoor workers using objective and subjective measures. Sleep seasonality among daytime office workers (n = 32) in Kiruna (Sweden, 67.86° N, 20.23° E) was studied by comparing the same group of workers in a winter and summer week, including work and days off at the weekend, using actigraphs (motion loggers) and subjective ratings of alertness and mood. Actigraph analyses showed delayed sleep onset of 39 min in winter compared to the corresponding summer week (p < 0.0001) and shorter weekly sleep duration by 12 min (p = 0.0154). A delay of mid-sleep was present in winter at workdays (25 min, p < 0.0001) and more strongly delayed during days off (46 min, p < 0.0001). Sleepiness levels were higher in winter compared to summer (p < 0.05). Increased morning light exposure was associated with earlier mid-sleep (p < 0.001), while increased evening light exposure was associated with delay (p < 0.01). This study confirms earlier work that suggests that lack of natural daylight delays the sleep/wake cycle in a group of indoor workers, despite having access to electric lighting. Photic stimuli resulted in a general advanced sleep/wake rhythm during summer and increased alertness levels.

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  • Sleep Quality After Modified Uvulopalatopharyngoplasty

    2018. Joar Sundman (et al.). Sleep 41 (1)

    Artikel

    Study Objectives: To investigate whether uvulopalatopharyngoplasty (UPPP) improves sleep quality in patients with Obstructive Sleep Apnea (OSA) using the Functional Outcomes of Sleep Questionnaire (FOSQ) and the Karolinska Sleep Questionnaire (KSQ).

    Methods: Randomized controlled trial used to compare modified UPPP, with controls at baseline and after six months. The controls received delayed surgery and a six-month postoperative follow-up. All operated patients were offered a 24-month follow-up. At each follow-up, patients underwent polysomnography and vigilance testing and completed questionnaires. Nine scales were evaluated: five subscales and the total score in the FOSQ and three subscales in the KSQ.

    Results: Sixty-five patients, mean 42.3 years (SD 11.5), Friedman stage I and II, BMI <36 kg/m 2, moderate to severe OSA, were randomized to intervention (n = 32) or control (n = 33). In the FOSQ and in the KSQ, the mean rate of missing values was 6.2% (range 0-19%) and 20.5% (3-38%), respectively. In 8 of 9 scales, significant differences were observed between the groups in favor of UPPP. There were significant correlations between results from the questionnaires and objective measures from polysomnography and the vigilance test. At the six and 24-month postoperative follow-ups, 8 of 9 scales were significantly improved compared to baseline.

    Conclusions: In selected patients with OSA, subjective sleep quality was significantly improved six months after UPPP compared to controls, with stable improvements 24 months postoperatively. The correlations between subjective and objective outcomes, and the long-term stability suggest a beneficial effect from surgery, although a placebo effect cannot be excluded.

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  • Ancestral sleep

    2016. Horacio O. de la Iglesia (et al.). Current Biology 26 (7), R271-R272

    Artikel

    While we do not yet understand all the functions of sleep, its critical role for normal physiology and behaviour is evident. Its amount and temporal pattern depend on species and condition. Humans sleep about a third of the day with the longest, consolidated episode during the night. The change in lifestyle from hunter-gatherers via agricultural communities to densely populated industrialized centres has certainly affected sleep, and a major concern in the medical community is the impact of insufficient sleep on health 1 and 2. One of the causal mechanisms leading to insufficient sleep is altered exposure to the natural light–dark cycle. This includes the wide availability of electric light, attenuated exposure to daylight within buildings, and evening use of light-emitting devices, all of which decrease the strength of natural light–dark signals that entrain circadian systems [3].

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