In the Knowledge Café of the Forum Groningen on April 24 between 8 and 9:30 pm, Maaike van Veen, psychiatrist, Catrien Santing, historian, and Marijke Gordijn, chronobiologist from Chrono@Work, will discuss the topic of sleep, mood, history, and more. The discussion is led by Ruth Koops van ‘t Jagt. This Knowledge Café was created in…
The results of our study on the effects of near-infrared light (NIR) on health and well-being in people suffering from sleep loss is published today. In a double-blind, randomized, placebo-controlled study, the effects of three NIR light (850 nm) doses (1, 4, or 6.5 J·cm−2) were examined against the placebo. Exposure was presented five days…
Kick off meeting Healthy Living as a service in Martiniplaza. Our goal in this project is to contribute with knowledge on 24-hour rhythms and sleep. Michelle Luxwolda and Rieks Hoekman organised a presentation of Chrono@Work in a booth. The audience could indicate their sleep pattern to create a chronotype distribution in a creative way!
Chrono@Work received the good news that funding was granted for a project in the topic PCH (personalized & connected health) Ecosystem from the University Medical Center Groningen. This is a European funded project under the umbrella of SNN. In the project, Chrono@Work, supported by the University of Groningen, will develop a mobile application to use…
In November, we started with recruiting new participants for the study on the effects of near-infrared light. Purpose was to include 20 more subjects in winter. The task was to include them all within 3 weeks to be ready before Christmas. And yes! We are happy to announce that we managed to find 20 enthusiastic…
Last week, I was asked several times to talk again about the role of the biological clock for our health and the detrimental effects of Daylight Saving time. It is all about healthy sleep and the right light at the right time. Prevention of sleep problems is the most important thing. But if you suffer…
Can we bring in a bit of sunshine? After 2 successful rounds of the Light Study last summer and winter, we have decided to extend the study into near-infrared light one more time to the coming winter period. This is the first-ever long-term study into the effects of pulsed near-infrared (NIR) light on human well-being…
Marijke Gordijn is invited for several public events (in Dutch) on the topic of Daylight saving time. The first one will be an interview organised by Studium Generale Utrecht in collaboration with Tivoli/Vredenburg. On October 28th, at 8:15 pm on the stage of Tivoli-Vredenburg in Utrecht, Marijke will talk about the role of the biological…
On January 8th, Marijke Gordijn from Chrono@Work and Roelof Hut from the University of Groningen were interviewed by EditieNL about the effects of the COVID-19 related restrictions on sleep. Colleagues recently published that on average people sleep longer and later during the lockdown. However, shortage of sleep and sleeping problems have serious health effects. EditieNL…
In the early morning of December 26th, Marijke Gordijn from Chrono@Work gave an interview on NPO Radio 1 about the role of light for well being and health. This item is especially interesting in the dark winter days around Christmas in our region. The focus of the interview was on the new study we do…
Can we bring in a bit of sunshine? After 2 successful rounds of the Light Study last summer and winter, we have decided to extend the study into near-infrared light one more time to the coming winter period. This is the first-ever long-term study into the effects of pulsed near-infrared (NIR) light on human well-being…
Chrono@Work has received a VIA grant from the European Regional Development Fund (EFRO) for support with the development of a new consumer service, namely individual coaching and advice on sleep-wake rhythm disturbances. The grant is for hiring expert Maureen van Veelen from Next Phase Management and Advice, who will help C@W to set up this…
The COVID-19 pandemic poses a serious health threat to the world population. In response, governments are implementing a variety of new policies including self-quarantine, self-isolation and social distancing. While medically necessary to limit spread, these new social policies can disrupt many of the stabilizing factors in our lives which support mental health. In close collaboration,…
Chrono@Work will be present at several symposia, classes and congresses in the upcoming period. Please have a look and subscribe if you are interested in the topic. 16th April 20:00h in Leeuwarden: Studium Generale Het Einde van de Zomertijd en Dan? 18th April whole day in Zeist: Medilex symposium on ‘Slaapproblemen en -stoornissen bij mensen met…
Chrono@Work published a paper on the role of the biological clock in safety and health in the Dutch journal for health and safety officers: Safety! magazine. In this paper, we explain why we perform so badly during the night and how we can keep our biological clock in synch with the natural rhythm of light…
On May 17th, Pauline Bollen and Marijke Gordijn from Chrono@Work organized an interactive workshop for a group of 15 social workers of academic institutes in the Netherlands. The assignment was clear: inform us on possible sleep problems we may encounter in our office and how to proceed if we recognize some. The 3h-workshop consisted of…
In the broadcast of 20 January 2018 Argos investigates the consequences of the night shift for hospital nurses. Sometimes the distress is so severe that nurses hit the pills. What do they do to keep going? What does this mean for patient care? In this episode of Argos, an intensive care unit nurse of the UMC…
Chronobiologists are not in favour of shifting the social clock backwards and forwards twice a year, because of negative effects on sleep and other possible harmful health effects. In the news section of this website the subject has often been discussed. In recent years, the number of advocates for abolishing summertime completely has grown, and…
The Dutch media are highly interested in the new teaching package Charge Your Brainzzz. Please read the item “50% of the adolescents do not sleep enough…but in this way you will get them in bed” (in Dutch) that RTL published online on September 27th.
After a year of hard work we are there! The teaching materials for the package Charge Your Brainzzz are ready. Charge your Brains teaches highschool students about sleep. On 27 September, Chrono@Work and the Dutch Brain Foundation will launch this special educational package. Charge Your Brainzzz is a modern package with activating learning tools including…
Wednesday September 27th, Chrono@Work and the Brain Foundation will launch the new teaching material Charge Your Brainzzz in the Corpus Congress Centre in Leiden. Charge Your Brainzzz consists of a package of three lessons about sleep regulation and sleep disorders, with activating learning tools, animations (to be used during class) and a serious game developed…
On May 16, Chrono @ Work organizes 2 workshops for Ambulance Care Netherlands in the Rijtuigenloods in Amersfoort. These workshops are part of the program ‘Sustainable employability: Optimal on the go!’ Both workshops are fully booked. During the workshop attention is given to the care for the ambulance workers themselves. How to deal with the…
Gordijn M.C.M. Slapen als onderdeel van een gezonde leefstijl. In: “Gestoorde slaap: een onschuldig probleem?” Lancel M., Koenraadt F. en ‘t Lam K. (eds). Wolf Legal Publishers. pp 13-28. (2016).
According to the European directives, Daylight Saving time ends in the last weekend of October. Most European countries follow this directive, which means that this year on October 30 the clock will be shifted back one hour (change from 3 am to 2 am). For us this means an extra hour on the night of…
On September 12 several media reported that according to a TNS Nipo survey among 3,400 Dutch, that one out of six workers has sleeping problems. In a radio interview with Radio North on September 12 at 13: 40h Marijke Gordijn CEO of Chrono@Work explained what the risks are of sleep deprivation (http://radio.rtvnoord.nl/ipad/index.asp?actie=radiogemist). We should distinguish…
In their issue No. 19 of 23 August – 6 september, Computer Idee, a magazine about computers and electronics for consumers, pays detailed attention to the pros and cons of blue light filters for computers, tablets and smartphones. The conclusion is that we are exposed to more blue light through the use of electronic screens…
On July 19th at 17: 15h Marijke Gordijn CEO of Chrono@Work was interviewed by Morad & Shay for the local youth radio station Funx. Following up on a British study from 2015 that discussed the optimal bed-times, times of getting up and working times for young and elderly people. Professor Kelley and colleagues published an…
Chrono@Work wrote an informative article in the journal of “Longkruid” of the Dutch Society for Pulmonary Function Analysts. Breathing and sleep are two essential elements of our daily life that, if everything is working correctly, we barely notice. But if something goes wrong, it has a great impact on our daily lives, our work and…
NRC next fact check, examines whether the NRC report in the Algemeen Dagblad of 9 May over Duch being campions at sleeping long is correct. The conclusion was drawn on the basis of an article in Science Advances which made use of data from the worldwide used sleepapp. NRC Next consulted among others, Chrono@Work on this…
Apple recently released a free update to iOS 9.3, the operating system for iPhone and iPad. The most interesting addition this time is the ‘night shift’ function. After sunset, the screen gets a rosy glow that is less bothersome to the eyes and should ensure a better night’s sleep. In the Dagblad van het Noorden…
Under the umbrella of the Dutch Association of Sleep-Wake Research (NSWO) and the Sleep Medicine Association Netherlands (SVNL) the first Dutch Sleep Congress, SLEEP 2016.will be organized on the 3-4 November, 2016 in the Heerlickheijd, Ermelo. The conference is a unique interdisciplinary collaboration between different departments working in the field of Sleep, e.g. pulmonologists, neurologists,…
Daylight saving time will be set coming Saturday to Sunday. The clock will advance and this is something we can feel well: our biological clock gets upset. Marijke Gordijn, chronobiologist at the University of Groningen explains why: ‘Our brains contain a biological clock. That signals to our body what time it is. Just like old-fashioned…
As the 24-hour economy continues to leave its mark on societal life, the effects of the disruption of the natural biological rhythm become more apparent. Aside from the effects this has on sleep we will also discuss the health effects in the long term. As well as potential measures to reduce the negative effects of…
“We appear to sleep less and less. But too little sleep is bad for you: your focus, your memory, your digestion, your mood all suffer. Personally, I never sleep more than 5 hours a night. Prefferably, I would not sleep at all. What would 50 hours of sleep deprivation do to me?” During the episode…
This study examined associations of chronotype and age with shift-specific assessments of main sleep duration, sleep quality and need for recovery in a cross-sectional study among N ¼ 261 industrial shift workers (96.6% male). Logistic regression analyses were used, adjusted for gender, lifestyle, health, nap behaviour, season of assessment and shift schedule. Shift workers with latest versus earliest…
