Objective: Studies in the literature evaluated the association between personality traits, sleep quality, and negative emotionality, and the circadian rhythm components of morning affect, eveningness, and amplitude of diurnal variation (distinctness). Associations between sleep parameters, eating habits, dietary intake, and diet quality, and circadian rhythm components were explored in the current study. Material and Methods: A sample of 605 Turkish university students participated in this study and completed a preliminary questionnaire related to sociodemographic characteristics, sleep parameters, and eating habits, and The Morningness-Eveningness Stability Scale improved. Also, their dietary intake was assessed with 24-hour dietary recall method. Results: Morning affect was positively correlated with number of main meals and snacks, energy, protein, total fat, saturated fatty acids, monounsaturated fatty acids intakes, and consumption of eggs and nuts and negatively correlated with time to fall asleep during weekends, wake up time on weekdays and weekends. Distinctness generally showed the opposite associations. Eveningness exhibited positive associations with wake up time on weekdays and weekends, and negative associations with number of main meals and egg consumption. No statistically significant association was established between circadian rhythm components of morning affect, eveningness and amplitude of diurnal variation (distinctness), and diet quality of university students. Conclusion: Circadian rhythm components of morning affect and distinctness may both be more strongly related to dietary intakes of university students. Further research is needed to confirm these findings and establish the directions of possible causal relationships, which may help to develop personalised nutrition advice for university students.
Keywords: Morning affect; eveningness; distinctness; sleep; diet quality
Amaç: Literatürde yer alan araştırmalar, kişilik özellikleri, uyku kalitesi ve negatif duygusallık ile sirkadiyen ritim bileşenleri sabah etkisi, akşamcılık ve günlük varyasyon genliği (farklılık) arasındaki ilişkiyi araştırmıştır. Bu çalışmada, uyku parametreleri, beslenme alışkanlıkları, diyet alımları ve diyet kalitesi ile sirkadiyen ritim bileşenleri arasındaki ilişki araştırılmıştır. Gereç ve Yöntemler: Bu çalışmaya 605 üniversite öğrencisi katılmış olup; öğrenciler sosyodemografik özellikler, uyku parametreleri ve beslenme alışkanlıkları ile ilgili bir ön anket ve Sabahçı-Akşamcı Stabilite Ölçeği-Geliştirilmiş'i yanıtlamıştır. Ayrıca 24 saatlik geri hatırlama yöntemi ile öğrencilerin besin alımları değerlendirilmiştir. Bulgular: Sabah etkisi, ana ve ara öğün sayısı, enerji, protein, toplam yağ, doymuş yağ asidi ile tekli doymamış yağ asidi alımı ve yumurta ve yağlı tohum tüketimiyle pozitif ilişki; hafta sonu uykuya dalma süresi, hafta içi ve hafta sonu uyanma saati ile negatif ilişki göstermiştir. Farklılık ise genellikle sabah etkisine zıt yönde korelasyonlar göstermiştir. Akşamcılık, hafta içi ve hafta sonu uyanma saatleri ile pozitif ilişki, ana öğün sayısı ve yumurta tüketimi ile negatif ilişki göstermiştir. Sirkadiyen ritim bileşenleri sabah etkisi, akşamcılık ve günlük varyasyon genliği (farklılığının) ile öğrencilerin diyet kalitesi arasında istatistiksel olarak anlamlı bir ilişki bulunmamıştır. Sonuç: Sirkadiyen ritim bileşenleri sabah etkisi ve farklılık ile üniversite öğrencilerinin diyet alımları arasındaki ilişki daha güçlü bulunmuştur. Bu bulguların doğrulanması ve üniversite öğrencilerine kişiye özgü beslenme tavsiyelerinde bulunulmasına yardımcı olacak olası ilişkilerin hangi yönde olduğunun ortaya konması için daha fazla çalışmaya ihtiyaç duyulmaktadır.
Anahtar Kelimeler: Sabah etkisi; akşamcılık; farklılık; uyku; diyet kalitesi
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