Tonetti L, Fabbri M, Filardi M, Martoni M, Natale V
Department of Psychology, University of Bologna, Bologna, Italy.
Department of Psychology, Second University of Naples, Caserta, Italy.
Pediatr Obes. 2016 Dec;11(6):e27-e29. doi: 10.1111/ijpo.12075. Epub 2015 Oct 21.
BACKGROUND/OBJECTIVE: This study aimed to examine the association between body mass index (BMI) and school performance in high school students by controlling for relevant mediators such as sleep quality, sleep duration and socioeconomic status.
Thirty-seven high school students (mean age: 18.16 ± 0.44 years) attending the same school type, i.e. 'liceo scientifico' (science-based high school), were enrolled. Students' self-reported weight and height were used to calculate BMI. Participants wore an actigraph to objectively assess the quality and duration of sleep. School performance was assessed through the actual grade obtained at the final school-leaving exam, in which higher grades indicate higher performance.
BMI, get-up time, mean motor activity, wake after sleep onset and number of awakenings were negatively correlated with the grade, while sleep efficiency was positively correlated. When performing a multiple regression analysis, BMI proved the only significant (negative) predictor of grade.
When controlling for sleep quality, sleep duration and socioeconomic status, a higher BMI is associated with a poorer school performance in high school students.
背景/目的：本研究旨在通过控制睡眠质量、睡眠时间和社会经济地位等相关中介因素，探讨高中生体重指数（BMI）与学业成绩之间的关联。
招募了37名就读于同一类型学校（即“liceo scientifico”，理科高中）的高中生（平均年龄：18.16 ± 0.44岁）。学生自我报告的体重和身高用于计算BMI。参与者佩戴活动记录仪以客观评估睡眠质量和时长。学业成绩通过高中毕业考试的实际成绩进行评估，分数越高表明成绩越好。
BMI、起床时间、平均运动活动量、睡眠后觉醒时间和觉醒次数与成绩呈负相关，而睡眠效率与成绩呈正相关。进行多元回归分析时，BMI被证明是成绩的唯一显著（负）预测因素。
在控制睡眠质量、睡眠时间和社会经济地位后，较高的BMI与高中生较差的学业成绩相关。
