Featured Research

from universities, journals, and other organizations

Does too much time at the computer lead to lower bone mineral density in adolescents?

Date:
April 4, 2014
Source:
International Osteoporosis Foundation
Summary:
In boys, higher screen time was adversely associated to bone mineral density at all sites even when adjusted for specific lifestyle factors. These were contrasting results to those found in girls -- and this could not be explained by adjustments for the different parameters measured.

Results of a study presented today at the World Congress on Osteoporosis, Osteoarthritis and Musculoskeletal Diseases, showed that in boys, higher screen time was adversely associated to bone mineral density (BMD) at all sites even when adjusted for specific lifestyle factors.

The skeleton grows continually from birth to the end of the teenage years, reaching peak bone mass -- maximum strength and size -- in early adulthood. Along with nutritional factors, physical activity can also greatly impact on this process. There is consequently growing concern regarding the possible adverse effects of sedentary lifestyles in youth on bone health and on obesity.

The Norwegian study explored the hypothesis that greater computer use at weekends is associated with lower BMD. The data was obtained from 463 girls and 484 boys aged 15-18 years in the Tromsψ region of Norway. The students participated in the Fit Futures study from 2010-2011 which assessed more than 90% of all first year high school students in the region.

BMD at total hip, femoral neck and total body was measured by DXA (dual-energy X-ray absorptiometry). Lifestyle variables were collected by self-administered questionnaires and interviews, including questions on time per day during weekends spent in front of the television or computer, and time spent on leisure time physical activities. The associations between BMD and screen time were analyzed in a multiple regression model that included adjustment for age, sexual maturation, BMI, leisure time physical activity, smoking, alcohol, cod liver oil and carbonated drink consumption.

Not surprisingly, the researchers found that boys spent more time in front of the computer than girls. As well as high screen time being adversely associated to BMD, in boys screen time was also positively related to higher body mass index (BMI) levels. In contrast to the boys, girls who spent 4-6 hours in front of the computer, had higher BMD than counterparts who spend less than 1.5 hours screen time each day -- and this could not be explained by adjustments for the different parameters measured.

Lead author of the study Dr Anne Winther, Arctic University of Norway, Tromsψ, stated, "Bone mineral density is a strong predictor of future fracture risk. Our findings for girls are intriguing and definitely merit further exploration in other studies and population groups. The findings for boys on the other hand clearly show that sedentary lifestyle during adolescence can impact on BMD and thus compromise the acquisition of peak bone mass. This can have a negative impact in terms of osteoporosis and fracture risk later in life."

According to the International Osteoporosis Foundation (IOF), approximately one in five men over the age of fifty worldwide will suffer a fracture as a result of osteoporosis. Very low levels of awareness about osteoporosis risk and bone health in males has prompted IOF to focus on osteoporosis in men as a key World Osteoporosis Day theme in 2014.


Story Source:

The above story is based on materials provided by International Osteoporosis Foundation. Note: Materials may be edited for content and length.


Cite This Page:

International Osteoporosis Foundation. "Does too much time at the computer lead to lower bone mineral density in adolescents?." ScienceDaily. ScienceDaily, 4 April 2014. <www.sciencedaily.com/releases/2014/04/140404140205.htm>.
International Osteoporosis Foundation. (2014, April 4). Does too much time at the computer lead to lower bone mineral density in adolescents?. ScienceDaily. Retrieved September 23, 2014 from www.sciencedaily.com/releases/2014/04/140404140205.htm
International Osteoporosis Foundation. "Does too much time at the computer lead to lower bone mineral density in adolescents?." ScienceDaily. www.sciencedaily.com/releases/2014/04/140404140205.htm (accessed September 23, 2014).

Share This



More Health & Medicine News

Tuesday, September 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Liberia Pleads for Help to Fight Ebola

Liberia Pleads for Help to Fight Ebola

AP (Sep. 22, 2014) — Liberia's finance minister is urging the international community to quickly follow through on pledges of cash to battle Ebola. Bodies are piling up in the capital Monrovia as the nation awaits more help. (Sept. 22) Video provided by AP
Powered by NewsLook.com
Ebola Doctor Says Border Controls Critical

Ebola Doctor Says Border Controls Critical

AP (Sep. 22, 2014) — A Florida doctor who helped fight the expanding Ebola outbreak in West Africa says the disease can be stopped, but only if nations quickly step up their response and make border control a priority. (Sept. 22) Video provided by AP
Powered by NewsLook.com
Global Ebola Aid Increasing But Critics Say It's Late

Global Ebola Aid Increasing But Critics Say It's Late

Newsy (Sep. 21, 2014) — More than 100 tons of medical supplies were sent to West Africa on Saturday, but aid workers say the global response is still sluggish. Video provided by Newsy
Powered by NewsLook.com
Sierra Leone in Lockdown to Control Ebola

Sierra Leone in Lockdown to Control Ebola

AP (Sep. 21, 2014) — Sierra Leone residents remained in lockdown on Saturday as part of a massive effort to confine millions of people to their homes in a bid to stem the biggest Ebola outbreak in history. (Sept. 20) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins