Youngsters who do not get enough sleep on a regular basis are more likely to be overweight, a new study has found.
Conversely, when children got more shut-eye, they had a reduction in body mass index (BMI) and a significant drop in their risk of being overweight, the researchers found. The investigators also found lower BMIs resulted from differences in fat mass (not any effect on fat-free mass, such as muscle), indicating that poor sleep has negative effects on body composition.
In conducting the study, Rachael Taylor, a research associate professor in the department of human nutrition at the University of Otago in Dunedin, New Zealand, and colleagues followed 244 children from the age of 3 years to 7 years.
Every six months the children`s weight, height, BMI and body composition were measured, and their sleep and dietary habits were recorded. The children also wore accelerometers (devices that monitor body movement) to assess their level of physical activity. Additional factors known to be associated with BMI in kids were also taken into account, such as the children`s birth weight and their mother`s level of education and income.
The study, published online May 26 in BMJ, revealed that the children got an average 11 hours of sleep per day. Those who consistently slept less, however, had an increased risk of having a higher BMI by the time they turned 7 years old. On the other hand, among 3- to 5-year-olds, each extra hour of sleep per night was linked to a reduction in BMI of 0.49 and a 61 percent drop in the risk of being overweight or obese by the age of 7.
Taylor and colleagues concluded that sleep plays a critical role in children`s body composition. Prolonged lack of sleep, they found, may cause children to eat more and exercise less. Based on these findings, the study`s authors suggested that good sleep habits should be encouraged in children as a matter of public health.
However, more research is needed to determine whether more sleep or better sleeping patterns contribute to healthier children, they noted in a journal news release.
Bureau Report
By clicking “Accept All Cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts.
Cookies Setting
By clicking “Accept All Cookies”, you agree to the storing of cookies on your device and the processing of information obtained via those cookies (including about your preferences, device and online activity) by us and our commercial partners to enhance site navigation, personalise ads, analyze site usage, and assist in our marketing efforts. More information can be found in our Cookies and Privacy Policy. You can amend your cookie settings to reject non-essential cookies by clicking Cookie Settings below.
Manage Consent Preferences
Strictly Necessary Cookies
These cookies are necessary for the website to function and cannot be switched off in our systems. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. You can set your browser to block or alert you about these cookies, but some parts of the site will not then work or you may not be able to login.
Functional Cookies
These cookies enable the website to provide enhanced functionality and personalisation. They may be set by us or by third party providers whose services we have added to our pages. If you do not allow these cookies then some or all of these services may not function properly.
Targeting Cookies
These cookies may be set through our site by our advertising partners. They may be used by those companies to build a profile of your interests and show you relevant adverts on other sites. They are also used to limit the number of times you see an advert as well as help measure the effectiveness of an advertising campaign. They do not store directly personal information, but are based on uniquely identifying your browser and internet device. If you do not allow these cookies, you will experience less targeted advertising.
Performance Cookies
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we may not know when you have visited our site, and may not be able to monitor its performance.