Laboratório de Estudos em Neurociências, Cronobiologia & Sono (LENTES), Universidade Federal do Recôncavo da Bahia, Brazil.
PLoS One. 2020 Sep 2;15(9):e0238514. doi: 10.1371/journal.pone.0238514. eCollection 2020.
Chronotype is a circadian phenotype expressed in the preference of individuals to perform their activities and sleep in specific phases along the day. The objective of the study was to identify anxiety levels, quality of sleep and different chronotypes of university students and investigate their possible relationships. This is a cross-sectional study with a quantitative approach, in which 103 undergraduate students answered the Morningness-Eveningness Questionnaire (MEQ) the State and Trait Anxiety Inventory (STAI) and the Pittsburgh Sleep Quality Index (PSQI). There is a relationship between chronotype, quality of sleep and anxiety in the investigated population. Evening chronotype students showed higher anxiety status and have poor sleep quality when compared with morning chronotype students. The high occurrence of anxiety levels and poor sleep quality in evening students may be a consequence of high academic demand in a shift incompatible with the phase delay of the circadian timing system of these individuals.
时型是一种在个体沿着一天的特定阶段进行活动和睡眠的偏好中表现出来的昼夜节律表现型。本研究的目的是确定大学生的焦虑水平、睡眠质量和不同的时型，并探讨它们之间的可能关系。这是一项横断面研究，采用定量方法，共有 103 名本科生回答了 Morningness-Eveningness Questionnaire（MEQ）、State and Trait Anxiety Inventory（STAI）和 Pittsburgh Sleep Quality Index（PSQI）。在所调查的人群中，时型、睡眠质量和焦虑之间存在关系。与晨型学生相比，晚型学生表现出更高的焦虑状态和较差的睡眠质量。晚型学生中焦虑水平和睡眠质量差的高发生率可能是由于学业要求高，而与这些个体的昼夜节律计时系统的相位延迟不兼容的轮班工作所致。
