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Chronobiology International
The Journal of Biological and Medical Rhythm Research
Volume 34, 2017 - Issue 4
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Short Communication

Social jet lag: Sleep-corrected formula

Pages 531-535 | Received 10 Dec 2016, Accepted 21 Feb 2017, Published online: 20 Mar 2017
 

ABSTRACT

Social jet lag is a term describing misalignment between social and biological times. In this article, it is argued that the currently used formula for social jet lag captures not only this misalignment, but also sleep debt resulting from sleep deprivation during workdays. It is proposed to adopt the sleep-corrected formula for social jet lag, which takes the form of the difference between the sleep onset on free days and workdays in the case of subjects with longer sleep and later (or equal) sleep onset on free days compared to workdays; it takes the form of the difference between the sleep offset on free days and workdays for subjects with longer sleep and earlier (or equal) sleep offset on workdays compared to free days.

Acknowledgements

The work has been conducted within the project No. IP2015 026774.

Declaration of interest

The author reports no conflicts of interests. The author alone is responsible for the content and writing of this article.

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