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[Eating behavior, sleep self-assessment and personality traits of students with extreme chronotypes].

OBJECTIVE
To identify the differences in eating behavior, sleep self-assessment and personality traits in students with extreme chronotypes.


MATERIAL AND METHODS
Students (n=350), aged 17 to 23 years, with extreme chronotypes (owls/larks) were studied. Eating behavior was assessed with the Three-Factor Eating Questionnaire (TFEQ-R18). Evaluation of the condition of the cycle sleep-wakefulness (sleep quality, sleep hygiene, daytime sleepiness) and psychophysiological differences (Eysenck Personality Questionnaire, Spielberger-Khanin anxiety inventory and the Taylor Manifest Anxiety Scale (TMAS); the Stress test) was performed.


RESULTS AND CONCLUSION
Higher neuroticism, psychoticism and anxiety, low resistance to stress, reduced quality and hygiene of sleep with increased daytime sleepiness are found in people with evening preferences in comparison with the morning chronotype. Eating behavior according to TFEQ-R18 is characterized by a lack of cognitive restraint. The results may indicate preclinical health disorders, which are affected by lifestyle factors. The number of alcohol consumers and smokers is two and more than three times higher, respectively, among students with evening chronotype. The changes identified in people with evening chronotype require additional attention to student's health.