A dose–response relationship between short sleeping hours and childhood obesity: results of the Toyama Birth Cohort Study

Sekine, Michikazu; Yamagami, Takashi; Handa, Kyoko; Saito, Tomohiro; Nanri, Seiichiro; Kawaminami, Katsuhiko; Tokui, Noritaka; Yoshida, Katsumi; Kagamimori, Sadanobu

doi:10.1046/j.1365-2214.2002.00260.x

Cited by 356 publications

(325 citation statements)

References 29 publications

(37 reference statements)

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“…Similar findings have also been reported in children in the US and Japan indicating an inverse relationship between daily sleeping hours and risk of childhood obesity. 8,9 In our present study, we observed a clear inverse trend between daily sleeping hours and BMI, reaching statistical significance in men.…”

Section: Discussionsupporting

confidence: 65%

“…5,6 Recently, there are increasing number of reports on the association between short daily sleeping time and obesity. [7][8][9] These observations have led to the hypothesis that metabolic and hormonal changes associated with stressful lifestyle such as inadequate sleep might affect the body weight. 7,10 In support of this notion, stress-induced hypercortisolemia can lead to obesity and decreased insulin sensitivity.…”

Section: Introductionmentioning

confidence: 99%

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Association between sleeping hours, working hours and obesity in Hong Kong Chinese: the ‘better health for better Hong Kong’ health promotion campaign

et al. 2006

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Objective: To study the inter-relationships between sleeping hours, working hours and obesity in subjects from a working population.Research design: A cross-sectional observation study under the 'Better Health for Better Hong Kong' Campaign, which is a territory-wide health awareness and promotion program. Subjects: 4793 subjects (2353 (49.1%) men and 2440 (50.9%) women). Their mean age (7s.d.) was 42.478.9 years (range 17-83 years, median 43.0 years). Subjects were randomly selected using computer-generated codes in accordance to the distribution of occupational groups in Hong Kong. Results: The mean daily sleeping time was 7.0671.03 h (women vs men: 7.1471.08 h vs 6.9870.96 h, Po0.001). Increasing body mass index (BMI) was associated with reducing number of sleeping hours and increasing number of working hours reaching significance in the whole group as well as among male subjects. Those with short sleeping hour (6 h or less) and long working hours (49 h) had the highest BMI and waist in both men and women. Based on multiple regression analysis with age, smoking, alcohol drinking, systolic and diastolic blood pressure, mean daily sleeping hours and working hours as independent variables, BMI was independently associated with age, systolic and diastolic blood pressure in women, whereas waist was associated with age, smoking and blood pressure. In men, blood pressure, sleeping hours and working hours were independently associated with BMI, whereas waist was independently associated with age, smoking, blood pressure, sleeping hours and working hours in men. Conclusion: Obesity is associated with reduced sleeping hours and long working hours in men among Hong Kong Chinese working population. Further studies are needed to investigate the underlying mechanisms of this relationship and its potential implication on prevention and management of obesity.

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Section: Discussionsupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Association between sleeping hours, working hours and obesity in Hong Kong Chinese: the ‘better health for better Hong Kong’ health promotion campaign

et al. 2006

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“…This finding of growth limitation in obesity has only ever been reported in developing countries, such as Brazil, 12 and may point to the increasing availability of inexpensive, energy-dense low-nutrient food as being a substantial cause of the increasing epidemic of obesity in this social group. However, other socioeconomic-linked factors including tobacco smoke exposure 13 (in utero and postnatal), decline in physical activity, 14 and possibly sleep patterns 15,16 may play important roles in growth and obesity. Indeed, a major impact on growth and body fat in children is growth hormone release, which shows peaks of secretion during sleep, following feeding and exercise.…”

Section: Resultsmentioning

confidence: 99%

Childhood obesity and socioeconomic status: a novel role for height growth limitation

et al. 2005

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“…12 Other potential mediating variables could include increased exposure to food-related advertising directed at children, 42,43 or interference with sleep. Two studies have demonstrated that children who receive less than 10 h of sleep per night were more likely to be obese, 44,45 and additional research has shown that having a TV in the bedroom is associated with fewer hours of sleep. 9 To reduce child overweight status, successful interventions have included limiting the amount of time spent in front of the television.…”

Section: Discussionmentioning

confidence: 99%

Children with a TV in their bedroom at higher risk for being overweight

et al. 2006

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Objective: We examined having a TV in the bedroom as a risk factor for child overweight. Design: Cross-sectional study. Setting: School-and telephone-based surveys in New Hampshire and Vermont between 2002 and 2004. Participants: Two thousand three hundred and forty-three children enrolled in public schools, aged 9-12 years, and one of their parents. Main exposures: The child having a TV in the bedroom. Main outcome measures: Age-and gender-standardized child body mass index (zBMI). Overweight was defined as equal to or above the 95th percentile for zBMI. Results: Overall, 22.3% (N ¼ 523) of the children were overweight, and almost half of all children (48.2%, N ¼ 1130) had a TV in their bedroom. Children with a TV in their bedroom had a higher zBMI and were significantly more likely to be overweight compared to those without a TV in their bedroom (27.3 versus 17.7%, respectively; Po0.05). After controlling for sociodemographics, physical activity, frequency of TV or movie watching and internet use, children with a TV in their bedroom who watched at least one session of TV or movies per day were more likely to be overweight compared to those without a TV in their bedroom (odds ratio ¼ 1.32, 95% confidence interval: 1.03, 1.70).

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A dose–response relationship between short sleeping hours and childhood obesity: results of the Toyama Birth Cohort Study

Abstract: A strong inverse association was observed in the relationship between sleeping hours and childhood obesity. Longitudinal research will be required to confirm this causality.

Cited by 356 publications

References 29 publications

Association between sleeping hours, working hours and obesity in Hong Kong Chinese: the ‘better health for better Hong Kong’ health promotion campaign

Association between sleeping hours, working hours and obesity in Hong Kong Chinese: the ‘better health for better Hong Kong’ health promotion campaign

Childhood obesity and socioeconomic status: a novel role for height growth limitation

Children with a TV in their bedroom at higher risk for being overweight

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