@article{Blume2020b,
title = {Effects of the COVID-19 lockdown on human sleep and rest-activity rhythms},
author = {C. Blume and Marlene H. Schmidt and C. Cajochen},
doi = {https://doi.org/10.1016/j.cub.2020.06.021},
year = {2020},
date = {2020-06-10},
journal = {Current Biology},
abstract = {In modern societies, human rest-activity rhythms and sleep result from the tensions and dynamics between the conflicting poles of external social time (e.g., work hours and leisure activities) and an individual’s internal biological time. A mismatch between the two has been suggested to induce ‘social jetlag’ [SJL; 1] and ‘social sleep restriction’ (SSR), that is, shifts in sleep timing and differences in sleep duration between work days and free days. Social jetlag [2, 3] and sleep restrictions [4] have repeatedly been associated with negative consequences on health, mental wellbeing, and performance. In a large-scale quasi-experimental design, we investigated the effects of the phase with the strictest COVID-19 restrictions on the relationship between social and biological rhythms as well as sleep during a six-week period (mid-March until end of April 2020) in three European societies (Austria, Germany, Switzerland). We found that, on one hand, the restrictions reduced the mismatch between external (social) and internal (biological) sleep-wake timing, as indexed by significant reductions in SJL and SSR, with a concomitant increase in sleep duration. Sleep quality on the other hand was slightly reduced. The improved individual sleep-wake timing can presumably be attributed to an increased flexibility of social schedules, for instance due to more work being accomplished from home. However, this unprecedented situation also led to a significant increase in self-perceived burden, which was attendant to the decrease in sleep quality. These adverse effects may be alleviated by exposure to natural daylight as well as physical exercising.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{Angerer2020,
title = {Actigraphy in brain-injured patients – A valid measurement for assessing circadian rhythms?},
author = {M. Angerer and M. Schabus and M. Raml and G. Pichler and A. B. Kunz and M. Scarpatetti and E. Trinka and C. Blume},
url = {http://www.chronobiology.ch/wp-content/uploads/2020/05/s12916-020-01569-y.pdf},
doi = {10.1186/s12916-020-01569-y},
year = {2020},
date = {2020-05-12},
journal = {BMC Medicine},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{Blume2020,
title = {Perspective: Daylight Saving Time—An Advocacy for a Balanced View and against Fanning Fear},
author = {C. Blume and M. Schabus},
url = {http://www.chronobiology.ch/wp-content/uploads/2020/02/Blume-2020-Perspective-Daylight-Saving-Time-Advocacy-for-Balanced-Perspective.pdf},
doi = {10.3390/clockssleep2010003},
year = {2020},
date = {2020-01-19},
journal = {Clocks & Sleep},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{Blume2019b,
title = {“How does Austria sleep?” self-reported sleep habits and complaints in an online survey},
author = {C. Blume and T. Hauser and T. Winkler and D. PJ Heib and WR. Gruber and M. Schabus},
url = {http://www.chronobiology.ch/wp-content/uploads/2020/01/Blume2019_Article_HowDoesAustriaSleepSelf-report.pdf},
doi = {10.1007/s11325-019-01982-5},
year = {2019},
date = {2019-12-14},
journal = {Sleep Breath},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{Blume2019,
title = {Effects of light on human circadian rhythms, sleep and mood},
author = {C. Blume and C. Garbazza and M. Spitschan},
url = {http://www.chronobiology.ch/wp-content/uploads/2020/01/EMS84169.pdf},
doi = {doi:10.1007/s11818-019-00215-x},
year = {2019},
date = {2019-09-18},
journal = {Somnologie Berl},
keywords = {},
pubstate = {published},
tppubtype = {article}
}