Sleep duration and its relationship with school performance in Iranian adolescents


Sleep duration, school performance, adolescents


Background. Inadequate or poor sleep quality is common problems in adolescent that affect on their learning, memory and school performance. The present study aimed to determine the association between sleep hours and academic performance in young adults.
Methods. This cross-sectional study was designed as a descriptive-analytic study. Samples of adolescents of 14-18 years old in Qazvin city were enrolled. The Pediatric sleep questionnaire and BEARS questionnaire used for all students to screen comprehensively major sleeps problems in them. Chi-square test, t-test, analysis of variance (ANOVA), and correlation were performed to determine the relationship between the data (P < 0.001).
Results. Between 653 adolescents, 40% were male and 60% were female. Sleep duration, sleep onset delay, sleep insufficient, rate of oversleeping and academic performance had a direct relationship with gender (P < 0.001). The sleep duration, rate of oversleeping and academic performance were significantly higher in
boys, sleep onset delay and sleep insufficient was significantly higher in girls. Time of falling sleep at weekend nights and weekday nights have positively correlation with age (P < 0.001). Also, a significant relationship between students’ sleep hours with academic performance was shown (P < 0.001).
Conclusions. The overall result was that sleep duration, sleep onset delay, sleep insufficient and rate of oversleeping of students in this study had a significant influence on academic performance. Students without difficulty in falling asleep had good academic performance in compared to students with difficulty in falling asleep.


Åkerstedt, T., Nilsson, P. (2203) Sleep as restitution: an introduction. Journal of internal medicine, 254(1), 6-12.
Amintehran, E., Ghalehbaghi, B., Asghari, A., Jalilolghadr, S., Ahmadvand, A., Foroughi, F. (2013) High prevalence of sleep problems in school-and preschool-aged children in Tehran: A population based study. Iranian journal of pediatrics, 23(1), 45.
Carskadon, M.A. (2011) Sleep in adolescents: the perfect storm. Pediatric Clinics of North America, 58(3), 637-47.
Curcio, G., Ferrara, M., De Gennaro, L. (2006) Sleep loss, learning capacity and academic performance. Sleep Med Rev, 10(5), 323-37.
Dewald, J.F., Meijer, A.M., Oort, F.J., Kerkhof, G.A., Bogels, S.M. (2010) The influence of sleep quality, sleep duration and sleepiness on school performance in children and adolescents: A meta-analytic review. Sleep Med Rev, 14(3), 179-89.
Fallone, G., Owens, J.A., Deane, J. (2002) Sleepiness in children and adolescents: clinical implications. Sleep Med Rev, 6(4), 287-306.
Fenn, K.M., Hambrick, D.Z. (2012) Individual differences in working memory capacity predict sleep-dependent memory consolidation. Journal of experimental psychology General, 141(3), 404-10.
Gibson, E.S., Powles, A.C., Thabane, L., O'Brien, S., Molnar, D.S., Trajanovic, N., et al. (2006) "Sleepiness" is serious in adolescence: two surveys of 3235 Canadian students. BMC Public Health, 6, 116.
Gruber, R., Laviolette, R., Deluca, P., Monson, E., Cornish, K., Carrier, J. (2010) Short sleep duration is associated with poor performance on IQ measures in healthy school-age children. Sleep medicine, 11(3), 289-294.
Huang, Y.S., Wang, C.H., Guilleminault C. (2010). An epidemiologic study of sleep problems among adolescents in North Taiwan. Sleep medicine, 11(10), 1035-42.
Hwangbo Y., Kim, W.J., Chu, M.K., Yun, C.H., Yang, K.I. (2016) Habitual Sleep Duration, Unmet Sleep Need, and Excessive Daytime Sleepiness in Korean Adults. J Clin Neurol, 12(2), 194-200.
Iglowstein, I., Jenni, O.G., Molinari, L., Largo, R.H. (2003) Sleep duration from infancy to adolescence: reference values and generational trends. Pediatrics, 111(2), 302-7.
Kang, V., Shao, J., Zhang, K., Mulvey, M., Ming, X., Wagner, G.C. (2012) Sleep Deficiency and Sleep Health Problems in Chinese Adolescents. Clinical Medicine Insights Pediatrics, 6, 11.
Kaplan, H.SV., editor. (2202) Normal sleep and sleep disorder. Philadelphia: Lippincott Williams & Wilkin.
Liu, X., Zhao, Z., Jia, C., Buysse, D.J. (2008) Sleep patterns and problems among Chinese adolescents. Pediatrics, 121(6), 1165-73.
Lowry, R., Eaton, D.K., Foti, K., McKnight-Eily, L., Perry, G., Galuska, D.A. (2012) Association of sleep duration with obesity among US high school students. Journal of obesity, 2012, 9.
Matricciani, L., Olds, T., Petkov, J. (2012) In search of lost sleep: secular trends in the sleep time of school-aged children and adolescents. Sleep Med Rev, 16(3), 203-11.
Olds, T., Maher, C., Blunden, S., Matricciani, L. (2010) Normative data on the sleep habits of Australian children and adolescents. Sleep, 33(10), 1381.
Pagel, J.F., Kwiatkowski, C.F. (2010) Sleep complaints affecting school performance at different educational levels. Front Neurol, 1, 125.
Russo, P.M, Bruni, O., Lucidi, F., Ferri, R., Violani, C. (2007) Sleep habits and circadian preference in Italian children and adolescents. J Sleep Res, 16(2), 163-9.
Sforza, E., Roche, F., Thomas-Anterion, C., Kerleroux, J., Beauchet, O., Celle, S., et al. (2010) Cognitive function and sleep related breathing disorders in a healthy elderly population: the SYNAPSE study. Sleep, 33(4), 515-21.
Spiegel, K., Leproult, R., L'Hermite-Baleriaux, M., Copinschi, G., Penev, P.D., Van Cauter, E. (2004) Leptin levels are dependent on sleep duration: relationships with sympathovagal balance, carbohydrate regulation, cortisol, and thyrotropin. J Clin Endocrinol Metab, 89(11), 5762-71.
Storfer‐Isser, A., Patel, S.R., Babineau, D.C., Redline, S. (2012) Relation between sleep duration and BMI varies by age and sex in youth age 8–19. Pediatric obesity, 7(1), 53-64.
Van Cauter, E., Spiegel, K., Tasali, E., Leproult, R. (2008) Metabolic consequences of sleep and sleep loss. Sleep Med, 9 Suppl 1,S23-8.
Wolfson, A.R., Carskadon, M.A. (2003) Understanding adolescents' sleep patterns and school performance: a critical appraisal. Sleep Med Rev, 7(6), 491-506.