A survey on social jetlag in Japan: a nationwide, cross-sectional internet survey

• DOI: 10.1007/s41105-019-00229-w
• Publication Date: 2019-06-25T16:25:18Z
• Authors: Yoko Komada; Isa Okajima; Shingo Kitamura; Yuichi Inoue
• Keywords: Cross-sectional study; Health psychology; Human physiology; Survey research; General Social Survey

Misalignment between an individual's circadian phase and his/her environment due to social imposition is called jetlag (SJL). SJL has emerged as a public health concern, it contributes unhealthy lifestyle adverse outcomes. This study aimed elucidate the percentage of in large Japanese population using version Munich ChronoType Questionnaire (MCTQ). A total 10,000 participants responded web-based cross-sectional survey, final sample comprised 3708 (60.1% male; average age 45.1 [SD 13.4] years). was measured by subtracting each participant's midpoint sleep on workdays from their free days. The [SD] absolute (SJLabs) value 0.91 [0.89] hours, with SLJabs more than 1 h 40.1%. Our data also showed that SJLabs becomes progressively smaller advancing age. considerable number our differences behavior Young people particular commonly oversleep days compensate for debt accumulated over workweek because late chronotype.