BackgroundLifestyle and its relationship to aspects of sleep quality have been reported in many studies. An unhealthy lifestyle is associated with less sleep duration and sleep patterns. Breakfast skipping is as an important part of unhealthy lifestyle. Poor sleep quality and skipping breakfast are common in adolescents. The aim of this study was to investigate the relationship between nutritional habits (breakfast and midmorning snack) and sleep quality in Yazd adolescents.
MethodsThis study was conducted among 569 students aged 12-16 years. They were selected by multistage random-cluster sampling method. Information such as demographic characteristics, anthropometric measurements, students' nutritional habits, physical activity and sleep quality were collected from all adolescents. All data were assessed by interview, 7-day food record, short form of the International Physical Activity, and Questionnaire and Pittsburgh Sleep Quality Index. The data were analyzed by SPSS software (version 22).
ResultsThe prevalence of breakfast skipping and semi-skipping (57.2%), overweight and obesity (37.8%), and insu cient sleep duration (38.9%) were high. The sleep score was signi cantly better in boys (p = 0.02).Sleep quality score of 63.7 % of the students was poor, but a signi cant relationship was not illustrated between sleep quality with breakfast frequency, abnormal weight, breakfast time, morning snack intake. A signi cant relationship was found between poor sleep quality with late bedtime and low physical activity (p <0.0001), late dinner (p <0.004), and female gender (p <0.02).
ConclusionsThis cross-sectional study supported the association between having dinner soon and no late bedtime with good sleep quality. But no signi cant difference was shown between sleep quality with weight and breakfast habits. This study suggested paying more attention to nutritional and sleeping status in this age group by employing skilled nutritionists and mental health professional in high schools.Data presented by mean and standard deviation (SD).