Sleep Patterns among South Korean Infants and Toddlers: Global Comparison

Ahn, Young Min; Williamson, Ariel A.; Seo, Hyun; Sadeh, Avi; Mindell, Jodi A.

doi:10.3346/jkms.2016.31.2.261

Cited by 31 publications

(26 citation statements)

References 22 publications

(54 reference statements)

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“…The sleep duration of our adult sample also compares unfavorably with the results from earlier studies that have included Korean adults,33, 34 as well as to the findings from international samples 35, 36, 37, 38. Given that short sleep duration across the lifespan of Koreans has been reported in separate studies,39, 40 Korean adults may obtain shorter sleep than the recommended level and than their counterparts in different countries because they simply do not require longer sleep. The optimal sleep duration needed for health benefits may differ across cultures;39, 40, 41 thus, it may be worthwhile to explore optimal sleep duration cutoffs across different cultures with different health indicators.…”

Section: Discussionsupporting

confidence: 78%

Levels and correlates of 24-hour movement behaviors among South Koreans: Results from the Korea National Health and Nutrition Examination Surveys, 2014 and 2015

Lee

Carson

Jeon

et al. 2019

Journal of Sport and Health Science

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Purpose This study aimed to examine the levels and correlates of 24-h movement behaviors (i.e., physical activity, sedentary time, and sleep), and different patterns of these behaviors in a nationally representative sample of South Koreans aged 12 years and older. This study also aimed to examine the sociodemographic correlates of 24-h movement behaviors stratified by age groups. Methods Self-reported, repeated cross-sectional data from 10,708 participants in the 2014 and 2015 Korea National Health and Nutrition Examination surveys were used. Key variables included moderate-to-vigorous intensity physical activity, muscular strengthening exercises, walking, active transportation, sedentary time, and sleep. Sociodemographic variables included age, sex, household income, area of residence, and education level. Descriptive statistics by sex and age as well as general linear models by age group were performed. Results The proportions of individuals meeting the moderate-to-vigorous intensity physical activity, muscular strengthening exercises, and sleep guidelines were, respectively, 21.6%, 22.1%, and 32.5% in male youth; 6.9%, 4.5%, and 22.8% in female youth; 55.5%, 30.8%, and 54.0% in male adults; 48.8%, 14.4%, and 57.6% in female adults; 44.0%, 30.6%, and 45.5% in male older adults; and 29.5%, 8.9%, and 37.3% in female older adults. The proportions of individuals showing the most ideal combinations of 24-h movement behaviors were only 3.2% in youth, 0.4% in adults, and 0 in older adults. Universally, older age, female sex, or living in metro Seoul were associated with unfavorable patterns of 24-h movement behaviors across different age groups. However, the associations of income and education with movement behaviors were mixed across age groups. Conclusion Overall, the proportion of South Koreans with a healthy 24-h movement behavior pattern is low. The sociodemographic correlates of different types of 24-h movement behaviors should be considered when designing targeted interventions for the promotion of healthy active living for South Koreans.

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Section: Discussionsupporting

confidence: 78%

Levels and correlates of 24-hour movement behaviors among South Koreans: Results from the Korea National Health and Nutrition Examination Surveys, 2014 and 2015

Lee

Carson

Jeon

et al. 2019

Journal of Sport and Health Science

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“…On average, this study reported an adequate daily sleep duration among the very young children. Compared with other high-income countries in Asia, sleep duration reported in this study is similar to that among Taiwanese young children (13.7 h/day) [57], and more than that among infants and toddlers in Japan (11.6 h/day) [58] and South Korea (11.9 h/day) [59]. However, unlike the high compliance reported among Australian (88.7%) [60] and Canadian (83.9%) toddlers [61], almost half of our study sample failed to meet the sleep recommendations [62, 63].…”

Section: Discussionsupporting

confidence: 69%

Screen viewing behavior and sleep duration among children aged 2 and below

et al. 2019

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BackgroundFew studies have investigated the association between screen viewing (SV) and sleep duration among young children. This study aims to examine the association between total and device-specific SV and sleep duration among children aged 2 and below.MethodsWe conducted a cross-sectional study of 714 Singaporean children aged 2 years and below. Parents were recruited during routine well-child clinic visits from two national polyclinics. In Singapore, all parents visit well-child clinics with their children at regular intervals for routine check-ups and vaccinations. Socio-demographic characteristics, duration of total and device-specific SV, and sleep duration were reported by parents via interviewer-administered questionnaires. Multiple linear regression analysis was used to assess associations between various types of SV and sleep duration, adjusted for socio-demographic variables. Due to significant interaction between SV and age, stratified analyses for children aged less than 6 months and those aged 7–24 months were performed.ResultsThe prevalence of daily SV among children was 53.1%; 28.3% in children up to 6 months and 73.8% in children aged 7 to 24 months. TV viewing was reported for 44.3% of all children and mobile device SV for 30.1%. Children’s average sleep duration was 13.9 (SD = 3.5) hours daily and younger children had longer sleep duration than older ones (up to 6 months: mean = 15.6 h, SD = 3.9; 7–24 months: mean = 12.4 h, SD = 2.2; P < 0.01). In the regression analysis among all children, each 1 h per day increment in total SV was significantly associated with 0.26 h shorter sleep duration with similar significant associations for TV (β = − 0.28 h, 95%CI: -0.50, − 0.06) and mobile devices (β = − 0.35 h, 95%CI: -0.61, − 0.09). Stratified analysis revealed significantly greater reductions in sleep with higher SV among children aged 6 months and below (β = − 0.73 h, 95%CI: -1.12, − 0.34), while associations were weaker in older children (β = − 0.13 h, 95% CI: -0.24, − 0.01).ConclusionsThis study provides evidence for a substantial association between longer SV and shorter sleep duration among very young children. These associations appeared stronger among children aged 6 months and below as compared with those aged 7 to 24 months. Further studies are warranted to confirm our findings.Electronic supplementary materialThe online version of this article (10.1186/s12889-018-6385-6) contains supplementary material, which is available to authorized users.

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“…Chang et al Reported a negative correlation between sleep latency and sleep duration and daily nap time, which is in contradiction with the results of the present study [32]. Also, the inverse correlation of sleep duration with toddler age is similar to the results of other studies [29][30][31][32][33]. As expected, sleep duration will naturally decrease with age [8].…”

Section: Discussioncontrasting

confidence: 99%

“…The prevalence in Australia and the US is 55 to 60 percent [3-19-27], which can be due to cultural and social factors affecting one's sleep [28]. Similar to other studies, most of the children in the present study slept in their parents' bed [29][30], which had a significant positive relationship with sleep problems (r = 0.02, P <0.001). Because the presence of other people and their sleeping habits effect on the child's sleep [23].…”

Section: Discussionsupporting

confidence: 81%

Prevalence of sleep problems and its relation to sleeping habits in toddlers

Maree¹,

Zidi²,

Yari³

et al. 2019

Asian Pac J Envi & Cancer

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Background: Sleep problems in children have serious physical and psychological consequences such as obesity, aggression and attention deficit disorder in toddlers. The aim of the present study was to determine the prevalence of sleep problems and its relation with sleeping habits of toddlers in 2017. Methods: By random sampling from rural families of Razan city of Hamadan province, 120 mothers of 12-to 36-month-old children were selected and data collection tools included contextual questions, medical history and 33-question questionnaire of children's sleep habits (CSHQ) completed. Data were analyzed by SPSS software version 23, independent t-test, chi-square, Pearson correlation coefficient and multiple linear regression. Results: The mean age of the children was 22.82±7.53 months and 55% of them were boys and the prevalence of sleep problems was 70.8% (95% confidence interval: 71.9-69.7). The average sleep duration of the children was 11 hours and more than 60% of the children went to bed after 23 o'clock. Results show that age is an important factor in most dimensions of CSHQ and age predicts daytime sleepiness (β = -0.263), nocturnal wakefulness (β = -0.113) and duration, Sleep time (β = -0.108) and sleep resistance (β = 0.194) respectively. Also, parents' education and child's current weight were predictors of subscales of CSHQ questionnaire (P <0.05). In addition, there was a positive and significant correlation between sleep duration with infant sleep anxiety (r = 0.527) and resistance to sleep (r = 0.473) as well as nocturnal wakefulness with parasomnia (r = 0.416) (P <0.001). Conclusion: Given the alarming prevalence of sleep problems in toddlers in the present study and the impact of some changeable factors on children's sleep health, designing interventions aimed at educating mothers to improve healthy sleep habits in toddlers is necessary.

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Sleep Patterns among South Korean Infants and Toddlers: Global Comparison

Cited by 31 publications

References 22 publications

Levels and correlates of 24-hour movement behaviors among South Koreans: Results from the Korea National Health and Nutrition Examination Surveys, 2014 and 2015

Levels and correlates of 24-hour movement behaviors among South Koreans: Results from the Korea National Health and Nutrition Examination Surveys, 2014 and 2015

Screen viewing behavior and sleep duration among children aged 2 and below

Prevalence of sleep problems and its relation to sleeping habits in toddlers

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