Sleep and sleep habits from childhood to young adulthood over a 10-year period

Thorleifsdottir, B; Björnsson, Julius Kristjan; Benediktsdóttir, Bryndís; Gíslason, T; Kristbjarnarson, H.

doi:10.1016/s0022-3999(02)00444-0

Cited by 272 publications

(232 citation statements)

References 17 publications

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“…Such changes in the HRV parameters and SBP may lead to dysautonomia or hypotension in the near future, inasmuch as the sympathovagal balance does not seem to have been affected by nocturnal sleep duration. In addition, no HRV parameters in our preschool children aged 5-6 years were influenced by age or sex, while the CCV HF and CCV LF are considered to decrease with progressive age (Murata et al 1992;Tanaka et al 2000;Antelmi et al 2004); it may imply that the decreasing HRV in childhood is controlled more strongly by nocturnal sleep duration than by age, because sleep duration reduces in childhood (Thorleifsdottir et al 2002;Iglowstein et al 2003;Crosby et al 2005;Ishihara 2005;Ng et al 2005). Thus, sleep duration is suggested to be an important predictor for autonomic development in childhood.…”

Section: Discussionmentioning

confidence: 81%

“…In spite of potential issues involved in the estimation of nocturnal sleep (Sekine et al 2002), the duration between bedtime and wake time for weekdays in preschool children aged 5 to 6 years has been reported to be 10-11 hrs in Iceland (Thorleifsdottir et al 2002), about 11 hrs in Switzerland (Iglowstein et al 2003), and 9.7-10.2 hrs in the U.S. (Crosby et al 2005), while sleep durations in Hong Kong and Japan seem to be somewhat short (Ishihara 2005;Ng et al 2005). Judging from these data, it could be hypothesized that the optimal duration of nocturnal sleep for preschool children is 10 hrs or more.…”

confidence: 99%

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Cardiac Autonomic Hypofunction in Preschool Children with Short Nocturnal Sleep

Sampei

Murata

Dakeishi

et al. 2006

Tohoku J. Exp. Med.

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Preschool children with sleep deficit may suffer from autonomic symptoms or hypotension. Heart rate variability, reflecting cardiac parasympathetic and sympathetic activities, and blood pressure were assessed to clarify the effects of nocturnal sleep duration on cardiac autonomic function in 134 preschool children aged 5 and 6 years. Parents reported their children's typical bedtimes and wake times for weekdays. In the children, the mean nocturnal sleep duration (± standard deviation) was 575 ± 42 min. The parasympathetic and sympathetic activities and systolic blood pressure (SBP) were significantly lower in the 80 children with short sleep (nocturnal sleep duration < 10 hrs) than in the 54 children with long sleep ( 10 hrs). Only the SBP was positively correlated with nocturnal sleep duration in the children ( p < 0.001); also, short nocturnal sleep duration was significantly related to hypotension (SBP < 100 mmHg), as judged by multiple logistic regression analysis. Among the children, inverse correlations were seen between the parasympathetic activity and SBP and between the sympathetic activity and diastolic blood pressure ( p < 0.05). These findings indicate that shortening of nocturnal sleep is associated with cardiac autonomic hypofunction and low SBP in preschool children. We suggest that sleep duration is an important predictor for autonomic development in childhood.nocturnal sleep duration; cardiac parasympathetic and sympathetic activities; blood pressure; preschool children

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Section: Discussionmentioning

confidence: 81%

confidence: 99%

Cardiac Autonomic Hypofunction in Preschool Children with Short Nocturnal Sleep

Sampei

Murata

Dakeishi

et al. 2006

Tohoku J. Exp. Med.

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“…For epidemiological purposes, most (Mercer et al, 1998;Wolfson & Carskadon, 1998;Lee et al, 1999;Mantz et al, 2000;Meijer et al, 2000;Laberge et al, 2001;Sorensen & Ursin, 2001) or proposed to parents (Gulliford et al, 1990), or else a diary kept by the subject (Thorleifsdottir et al, 2002). In these studies, differences between time spent in bed and effective sleep duration are difficult to ascertain.…”

Section: Discussionmentioning

confidence: 99%

“…A prospective study demonstrated that, without restriction, spontaneous length of sleep remained fairly constant throughout pubertal stages with a median time of 9.2 h (Carskadon et al, 1980). In industrialized countries, despite a noteworthy variability, studies report a longer sleep duration during the weekend (Mercer et al, 1998;Wolfson and Carskadon, 1998;Mantz et al, 2000;Meijer et al, 2000;Shinkoda et al, 2000;Thorleifsdottir et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Nutritional status, growth and sleep habits among Senegalese adolescent girls

2004

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Objective: To study the relation between sleep habits, nutritional status, growth and maturation in a group of African adolescent girls. The main hypothesis to be tested was that sleep length could be an effective way to spare energy, and thus malnourished girls sleep longer than normal girls. Design: Three repeated yearly surveys (1997)(1998)(1999)) on a subsample of girls drawn from a larger study cohort on growth at adolescence. Setting: The Niakhar district in the central part of Senegal. Subject: In total, 40 girls were initially drawn. Missing girls were replaced at each round by girls having the same characteristics and belonging to the same cohort. Intervention: At each round, data on pubertal development (breast stages and occurrence of menarche), growth and nutritional status were collected. Adolescents wore an accelerometer for three or four consecutive nights and days at each round. Results: At the beginning of the survey, girls were 13.370.5 y old. They were under international reference values in weight and height. Their mean sleep duration was 8.570.9 h. Their puberty status did not influence their sleep habits; however, they slept more in March than in June, which was related to the seasonal change in daylight. There was a significant relation between body mass index and sleep habits: thinner girls slept a longer time and more quietly than the more corpulent girls. Conclusion: The nutritional status of these girls influenced their sleep habits: this may have been either a direct causal relation or a consequence of a protective attitude on the part of the mothers towards the frailer girls. Sponsorship: The R024 'Epidémiologie et Prévention' of the IRD (France) and the Nestlé Foundation.

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“…That is, adolescence is characterized by an increase in eveningness preference (often described as a shift from being a ''morning lark'' to an ''evening owl''), which is itself linked to pubertal status (Colrain and Baker 2011) and reaches its peak around the age of 20 before beginning its steady decline across adulthood (Roenneberg et al 2004). This also contributes to a weekend phase delay wherein, starting around age 9 (Thorleifsdottir et al 2002), many adolescents try to ''catch up'' on sleep on weekends when the weekday demands requiring an early rise time such as school are less pressing. As described by Dahl and Lewin (2002), ''a typical and preferred adolescent summer sleep schedule is 3:00 a.m. to noon'' (p. 179).…”

Section: Biological Factorsmentioning

confidence: 99%

Advancing a Biopsychosocial and Contextual Model of Sleep in Adolescence: A Review and Introduction to the Special Issue

Becker

Langberg

Byars

2015

J Youth Adolescence

157

130

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Sleep problems in adolescence have been identified as an international public health issue. Over the past few decades, notable advances have been made in our understanding of the patterns and consequences of sleep in adolescence. Despite these important gains, there is much about the role of sleep in adolescence that remains to be understood. This Special Issue brings together studies that examine sleep as it specifically pertains to adolescent development and adjustment. In this introductory article, we argue for the importance of grounding the study of sleep and adolescence in developmental science and a developmental psychopathology framework. First, a review of the literature is used to outline a biopsychosocial and contextual model of sleep in adolescence. Second, attention-deficit/hyperactivity disorder (ADHD) is used as an exemplar of the proposed model given the pervasiveness of sleep problems among youth with ADHD and the likelihood that sleep problems and ADHD symptoms are interconnected in complex ways. Finally, a brief introduction to the empirical articles included in the Special Issue is provided, with particular attention given to how these articles fit within the proposed biopsychosocial and contextual model. Along with the framework proposed in this article, the studies included in this Special Issue advance the current literature and point to critical directions for future research.

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Sleep and sleep habits from childhood to young adulthood over a 10-year period

Cited by 272 publications

References 17 publications

Cardiac Autonomic Hypofunction in Preschool Children with Short Nocturnal Sleep

Cardiac Autonomic Hypofunction in Preschool Children with Short Nocturnal Sleep

Nutritional status, growth and sleep habits among Senegalese adolescent girls

Advancing a Biopsychosocial and Contextual Model of Sleep in Adolescence: A Review and Introduction to the Special Issue

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