Featured Research

from universities, journals, and other organizations

Mid-Level Computer Screen Displays Can Minimize Musculoskeletal Strain In Schoolchildren

Date:
March 10, 2008
Source:
Human Factors and Ergonomics Society
Summary:
A new study by human factors researchers suggests that students' posture is affected by the height at which they view classroom learning materials. The researchers cited computer screen displays positioned at mid-level as causing less musculoskeletal strain than high- and book-level displays. The mid display was found to promote a more upright and symmetrical posture and lower average muscle activity than either the high- or the book-level position.

A new study by human factors researchers in Australia suggests that students’ posture is affected by the height at which they view classroom learning materials. The researchers cited computer screen displays positioned at mid-level as causing less musculoskeletal strain than high- and book-level displays.

The rapid increase in computer use by children over the past few years, say the authors, "has outpaced the development of knowledge about the ramifications for the health of children." For example, data from the Australian Bureau of Statistics indicate that in 2006, 80% of children aged 5 to 14 years used a computer at home.

Children are physically and behaviorally different from adults; for example, children’s heads are proportionately larger than those of adults. This makes research conducted on adults inadequate to address computer-related discomfort in children.

Because research on what constitutes the optimal display height for children is limited, Leon Straker and colleagues conducted a study in which they presented an interactive task to 24 children of normal height age 10–12. The children's movements were recorded with an optical capture system while they read from a book and wrote on paper or read from a computer display and used a mouse and keyboard to enter data. The researchers measured 3-D posture and muscle activity in the neck and upper limb for the high-, mid-, and book-level displays. The authors state that the study is unique in that it captures 3-D posture and muscle activity under conditions that are commonly observed in schools.

The high display resulted in mainly upward bending of the upper neck. As the visual target was lowered, head and neck downward bending increased. The mid-level display was found to promote a more upright and symmetrical posture and lower average muscle activity than either the high- or the book-level position. Of the three positions, the low (book-level) display was found to cause the most strain on muscles and joints.

Straker and colleagues note, "The data collected in this study provide the first detailed description of 3-D head, neck, and arm posture and the associated muscle activity of children reading and entering data with computers and reading and writing with paper." Despite some limitations of their study, they believe the findings can aid in the development of guidelines for computer use by children.

The article"Children’s Posture and Muscle Activity at Different Computer Display Heights and During Paper Information Technology Use," was published in the February 2008 issue of Human Factors: The Journal of the Human Factors and Ergonomics Society.


Story Source:

The above story is based on materials provided by Human Factors and Ergonomics Society. Note: Materials may be edited for content and length.


Cite This Page:

Human Factors and Ergonomics Society. "Mid-Level Computer Screen Displays Can Minimize Musculoskeletal Strain In Schoolchildren." ScienceDaily. ScienceDaily, 10 March 2008. <www.sciencedaily.com/releases/2008/03/080306140851.htm>.
Human Factors and Ergonomics Society. (2008, March 10). Mid-Level Computer Screen Displays Can Minimize Musculoskeletal Strain In Schoolchildren. ScienceDaily. Retrieved April 17, 2014 from www.sciencedaily.com/releases/2008/03/080306140851.htm
Human Factors and Ergonomics Society. "Mid-Level Computer Screen Displays Can Minimize Musculoskeletal Strain In Schoolchildren." ScienceDaily. www.sciencedaily.com/releases/2008/03/080306140851.htm (accessed April 17, 2014).

Share This



More Mind & Brain News

Thursday, April 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Is Apathy A Sign Of A Shrinking Brain?

Is Apathy A Sign Of A Shrinking Brain?

Newsy (Apr. 17, 2014) A recent study links apathetic feelings to a smaller brain. Researchers say the results indicate a need for apathy screening for at-risk seniors. Video provided by Newsy
Powered by NewsLook.com
Are School Dress Codes Too Strict?

Are School Dress Codes Too Strict?

AP (Apr. 16, 2014) Pushing the limits on style and self-expression is a rite of passage for teens and even younger kids. How far should schools go with their dress codes? The courts have sided with schools in an era when school safety is paramount. (April 16) Video provided by AP
Powered by NewsLook.com
Could Even Casual Marijuana Use Alter Your Brain?

Could Even Casual Marijuana Use Alter Your Brain?

Newsy (Apr. 16, 2014) A new study conducted by researchers at Northwestern and Harvard suggests even casual marijuana use can alter your brain. Video provided by Newsy
Powered by NewsLook.com
Couples Who Sleep Less Than An Inch Apart Might Be Happiest

Couples Who Sleep Less Than An Inch Apart Might Be Happiest

Newsy (Apr. 16, 2014) A new study by British researchers suggests couples' sleeping positions might reflect their happiness. Video provided by Newsy
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:
from the past week

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