Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Restricting Kids' Video Time Reduces Obesity, Randomized Trial Shows

05.03.2008
Entrenched sedentary behavior such as watching television and playing computer video games has been the bane for years of parents of overweight children and physicians trying to help those children lose pounds.

There has been little scientifically based research on the effect of limiting those activities, however.

University at Buffalo researchers now have shown in a randomized trial that by using a device that automatically restricted video-viewing time, parents reduced their children's video time by an average of 17.5 hours a week and lowered their body-mass index (BMI) significantly by the end of the 2-year study.

In contrast, children in the control group, whose video time was monitored, but not restricted, reduced their viewing time by only 5 hours per week.

Results of the study appear in the current issue (March 2008) of the Archives of Pediatric & Adolescent Medicine.

"Our controlled experiment provided a test of whether reducing access to television and computer time led to a reduction in BMI," said Leonard Epstein, UB Distinguished Professor in the departments of Pediatrics, Health Behavior and Social and Preventive Medicine and first author on the study.

"Results showed that watching television and playing computer games can lead to obesity by reducing the amount of time that children are physically active, or by increasing the amount of food they consume as they as engaged in these sedentary behaviors."

The study involved 70 boys and girls between the ages of 4 and 7 whose BMI -- the ratio of weight to height -- was at or above the 75 percentile for age and sex. Eighty percent of the children were above the 85th percentile and nearly half were above the 95th percentile.

The children were assigned randomly to a control group or an intervention group. Each family received a device called TV Allowance for all video outlets in the home. All participants regularly watched television or played computer video games for at least 14 hours per week, as determined during a 3-week pre-study period.

Each family member had a private individual code to activate the electronic devices. Devices in "intervention" homes, but not "control" homes, had a set weekly time limit, which was reduced by 10 percent per week until viewing time was reduced by 50 percent. Children had to decide how to "spend" their allotted viewing hours.

Body mass index, caloric intake and physical activity were monitored every six months. Data were collected on socioeconomic status and characteristics of the neighborhood, including distance to parks, neighborhood activities and perceived neighborhood safety.

Changes in BMI between groups were statistically significant at 6 months and 12 months, but became more modest over time, results showed. The intervention group showed a steady decline in BMI over the two years, while the control group showed an increase followed by a steady decline.

"Although the changes overall were modest," commented Epstein, "a small effect of using this simple and inexpensive intervention [the device costs approximately $100], magnified across the population, may produce important reductions in obesity and obesity-related health problems."

Also contributing to the study from UB were James N. Roemmich, Ph.D., associate professor of pediatrics and exercise and nutrition sciences; Jodie L. Robinson, MBA, senior counselor in the Behavioral Medicine Laboratory; Rocco A. Paluch, statistician in the UB Department of Pediatrics; Dana D. Winiewicz, senior research support specialist in pediatrics; and Janene H. Fuerch, student assistant. Thomas N. Robinson, M.D., M.P.H., from Stanford University School of Medicine in Stanford, Calif., also contributed to the study.

The research was supported by a grant from the National Institute of Diabetes and Digestive Diseases to Epstein and by the UB Behavioral Medicine Laboratory in the UB School of Medicine.

The University at Buffalo is a premier research-intensive public university, a flagship institution in the State University of New York system that is its largest and most comprehensive campus. UB's more than 28,000 students pursue their academic interests through more than 300 undergraduate, graduate and professional degree programs. Founded in 1846, the University at Buffalo is a member of the Association of American Universities.

Lois Baker | EurekAlert!
Further information:
http://www.buffalo.edu

More articles from Health and Medicine:

nachricht Using fragment-based approaches to discover new antibiotics
21.06.2018 | SLAS (Society for Laboratory Automation and Screening)

nachricht Scientists learn more about how gene linked to autism affects brain
19.06.2018 | Cincinnati Children's Hospital Medical Center

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Graphene assembled film shows higher thermal conductivity than graphite film

22.06.2018 | Materials Sciences

Fast rising bedrock below West Antarctica reveals an extremely fluid Earth mantle

22.06.2018 | Earth Sciences

Zebrafish's near 360 degree UV-vision knocks stripes off Google Street View

22.06.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>