Detecting chronotype differences associated to latitude: a comparison between Horne--Östberg and Munich Chronotype questionnaires

Sep 25, 2013Annals of human biology

Comparing two questionnaires to find how sleep timing types vary with latitude

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Abstract

Chronotype distributions differ between two Brazilian cities, with São Paulo showing a clear shift towards eveningness compared to Natal.

  • Chronotype refers to the preference for performing activities during specific times of the day.
  • Two questionnaires, Horne and Östberg (HO) and Munich Chronotype Questionnaire (MCTQ), were used to assess chronotypes among undergraduate students.
  • MCTQ scores indicated a significant eveningness shift in São Paulo compared to Natal.
  • HO scores from both cities showed overlapping distributions.
  • Findings support the idea that geographical location, particularly distance from the equator, may influence sleep phase timing.

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