Elementary Ergonomics


With the use of digital devices occupying a central role in students' lives, what was a workplace issue long ignored by schools now demands their attention.

Elementary ErgonomicsWHAT'S THE NO. 1 THREAT to young students using computers today? According to Dan Odell, Microsoft's in-house ergonomist, when he asked parents this very question, "the things they were most concerned about were online predators and people taking advantage of their kids. Ergonomics was fairly far down the list."

Unfortunately, that same lack of regard for ergonomics can be found among educators as well. Ask one and you're almost sure to be met by a confession that the topic rates as a low priority in most schools.

Perhaps it's the dry tone of the word itself that is to blame. Ergonomics, or the discipline of arranging the environment to fit the person in it, doesn't sound terribly exciting. But with as much time as we now spend on computers, Odell believes it is more relevant than ever. "If we're not conscious of using computers appropriately," he says, "we put ourselves at risk for potentially disabling injuries."

Ergonomics has long been considered essential in the workplace for avoiding visual and musculoskeletal injury and discomfort, and Odell sees K-12 coming on board. "There is a growing awareness of how much of an impact there is on students. A lot of the ergonomists I work with at different companies have been noticing that students are graduating from college and coming into the workforce already with chronic repetitive strain-injury problems. It seems at least from the anecdotal stuff that it's important to start focusing more on the student population."

Teaching Ergonomics

Susan Murphey, president of Essential Ergonomics, is doing just that. As community projects chair of the Puget Sound Human Factors and Ergonomics Society in Washington state, she is heading a project called Technically Cool Computing. The program, which she piloted in May at Washington's Shoreline School District, where her children have attended school, teaches kids how to evaluate their computer workstations and work habits to reduce their risk for musculoskeletal injuries.

Break Time

Elementary ErgonomicsBOSTON UNIVERSITY occupational therapy professor Karen Jacobs offers a free software program available for download on her website called Stretch Break for Kids, which provides an external cue to take breaks while working at the computer.

"When you think of the cumulative effects-- text messaging, gaming, computer use-- all of that adds up," she says. She points to her own children. "My daughter as a middle schooler was building PowerPoints and video presentations… [but she was] taught absolutely nothing about ergonomics."

The goal of Technically Cool Computing is to determine how to educate young students about ergonomics in an engaging way. Murphey believes the way to do that is by giving students and teachers a kit they can use to examine their own tech habits. She explains that the goal is to make the kit as plug-and-play as possible, so it can be incorporated anywhere in the curriculum. "If students have a technology class, it could go there," she says. "If they don't, it could go in science as they learn about tendons and muscle."

Each kit contains a low-cost digital camera, graphics on a transparency to evaluate posture, an instruction worksheet, and a PowerPoint presentation. The students take photos of each other, use the transparencies to evaluate each other's posture in the photos, then adjust their computer workstations accordingly. The kit also addresses other computing environments that may be less than ideal. This is an important feature, says Microsoft's Odell, who also volunteers with the Puget Sound ergonomics group. He cites a Microsoft study, soon to be published in the journal Work, which found that students with laptops often use them in unconventional ways-- "like lying on their stomach on the floor," he says-- which can further predispose them to injury.

Karen Jacobs is the founding editor of Work, which covers research related to ergonomics and children. She is also a clinical professor of occupational therapy at Boston University, where she has been studying how students use notebook computers. "[Laptops] weren't designed for everyday use," Jacobs says. "They were really designed for portability...and so they're not adjustable," Jacobs says. "Now we've got children using them on a regular basis. What will that mean?"

She set out to answer that question after coming across the Maine Learning Technology Initiative, which provides an Apple laptop to every Maine middle schooler and is now expanding into high schools as well. The result is a study launched in January that will follow 34 Maine students and their laptop use from seventh grade through high school graduation. The students received laptop accessories-- wireless mouse, notebook riser, keyboard, and mouse pad inscribed with ergonomics tips-- and are being trained on using the items to operate the laptops in an ergonomically correct fashion. One group of students was given standard keyboards; the other received curved keyboards that promote natural wrist posture.

"We're really interested in how children use computers in their home," she explains, "because we find that children will use the computer in multiple areas, like at a desk, a kitchen table, or a Ping-Pong table; it all depends on the time of day and what's available to them."

Building a Better Mouse

Elementary ErgonomicsIT'S NOT JUST RESEARCHERS who are considering how to implement ergonomics for young tech users. Companies are starting to hold up their end. As one example, Microsoft's Explorer Mini Mouse was developed to fit smaller hand sizes. "If your hand is very small, you can't rest it on the mouse pad the same way an adult would," Microsoft ergonomist Dan Odell explains. "So kids wind up turning the mice sideways in funny ways." Odell says a recent University of Washington study confirmed the benefits of using a smaller mouse.

A broad spectrum of data is being gathered for the study: A software program installed in the laptops will record how often the students use the computers, and a vision specialist will be monitoring their eyesight. As with Technically Cool Computing, cameras will be used in the study. Parents will periodically take photos of their children using their laptops at home, and e-mail the photos to Jacobs' team. Jacobs is also interested in how fast the students type and if they touch type; touch typing and "hunting and pecking" have different postures, she explains. (Touch typists sit upright, eyes on the screen. Those who hunt and peck tend to be hunched over, looking down at the keys.) And finally, the team will be considering anthropometrics: the study of human body measurements. As the student grows, will he change the way he sets up his computer?

"It's really important that you try to look at the total picture," Jacobs says. "That's what we're trying to do with this study."

Start at the Top

Simply being aware of the role of ergonomics in a healthy classroom puts Michael McClish ahead of his field, where too little mind is paid to it. McClish, a technology teacher at Los Angeles Teacher Preparation High School, says his district's technology plan lists tech expertise expectations for each grade, but he can't recall seeing any mention of ergonomics.

Thankfully for his students, McClish doesn't need any prodding from above. In his computer lab, because the lights have to be off when a projector is in use, to spare students' eyes he has scattered a few inexpensive torchiere lamps around the room. "If [students are] trying to watch their [computer] screen and the LCD projector, it really is a lot of eyestrain," he says.

McClish suggests polling district computer technology and programming personnel. "Ask them how many of them took a keyboarding class to become proficient in keyboard techniques, including ergonomics, posture, hand positions, etc. Many programming teachers-- and administrators-- have, shall we say, less than basic skills and understanding in the area."

According to Jacobs, the key to rectifying K-12's lack of attention to healthy technology use is by securing a topdown effort. Only that degree of commitment can help kids make ergonomics second nature. "Whenever I go into the principal's office," she says, referring to the school taking part in her study, "I'm always happy to see that he's applying ergonomics to his own computer workstation. When you have a commitment from the administration, then the teachers become committed, the children are committed, and you get a pay-it-forward from the parents as well."

Jennifer Grayson is a freelance health and environmental writer based in Los Angeles.

This article originally appeared in the 06/01/2009 issue of THE Journal.