Navigation Links
Shoulder pain from using your ipad? Don't use it on your lap
Date:1/24/2012

Amsterdam, NL -- The sudden popularity of tablet computers such as the Apple iPad has not allowed for the development of guidelines to optimize users' comfort and well-being. In a new study published in Work: A Journal of Prevention, Assessment, and Rehabilitation, researchers from Harvard School of Public Health, Microsoft Corporation, and Brigham and Women's Hospital report that head and neck posture during tablet computer use can be improved by placing the tablet higher to avoid low gaze angles, and through the use of a case that provides optimal viewing angles.

"Compared to typical desktop computing scenarios, the use of media tablet computers is associated with high head and neck flexion postures, and there may be more of a concern for the development of neck and shoulder discomfort," said lead investigator Jack T. Dennerlein, PhD, of the Department of Environmental Health, Harvard School of Public Health, and Brigham and Women's Hospital.

Fifteen experienced tablet users completed a set of simulated tasks with two media tablets, an Apple iPad2 and a Motorola Xoom. Each tablet had a proprietary case that could be adjusted to prop up or tilt the tablet computer. The Apple Smart Cover allows for tilt angles of 15 and 73, and the Motorola Portfolio Case allows for tilt angles of 45 and 63. Four user configurations were tested: Lap-Hand, where the tablet was placed on the lap; Lap-Case, with the tablet placed on the lap in its case set at the lower angle setting; Table-Case, with the tablet placed on a table with its case at the lower angle; and Table-Movie, with the tablet placed on a table with its case at the higher angle.

During the experiment, users completed simple computer tasks such as Internet browsing and reading, game playing, email reading and responding, and movie watching. Head and neck postures and gaze angle and distance were measured using an infrared three-dimensional motion analysis system.

Head and neck flexion varied significantly across the four configurations and across the two tablets tested. The iPad2 was associated with more flexed postures when it was placed in its case. This appeared to be driven by differences in case design, which drastically altered the tablet tilt angle and the corresponding viewing angle. For both tablets, the gaze angle changed in a similar fashion to the head flexion across all configurations, with non-perpendicular viewing angles causing increased head and neck flexion. Head and neck flexion angles were greater, in general, than reported for desktop or notebook computing.

Only when the tablets were used in the Table-Movie configuration, where the devices were set at their steepest case angle setting and at the greatest horizontal and vertical position, did posture approach neutral. This suggests that tablet users should place the tablet higher, on a table rather than a lap, to avoid low gaze angles, and use a case that provides steeper viewing angles. However, steeper angles may be detrimental for continuous input with the hands. "Further studies examining the effects of tablet and configuration on arm and wrist postures are needed to clarify and complete the postural evaluation," noted Dr. Dennerlein.

"Our results will be useful for updating ergonomic computing standards and guidelines for tablet computers. These are urgently needed as companies and health care providers weigh options to implement wide-scale adoption of tablet computers for business operations," Dr. Dennerlein concluded.


'/>"/>
Contact: Esther Mateike
e.mateike@iospress.nl
31-206-883-355
IOS Press
Source:Eurekalert

Related medicine news :

1. Lower dose of corticosteroids just as effective as higher for shoulder pain
2. Frequent Pitching Could Harm Kids Shoulders, Elbows
3. Henry Ford Hospital study: Shoulder function not fully restored after surgery
4. Researchers at the University of Granada associate trigger points with shoulder injury
5. Surgery to repair torn shoulder muscles in the elderly can reduce pain and improve function
6. Physiotherapy after surgery -- the best solution for shoulder problems
7. Shoulder arthritis? What patients need to know before treatment
8. Patients Sponsor Their Chiropractors to Attend Frozen Shoulder Treatment Seminar
9. Henry Ford Hospital study: Shoulder function not fully restored after surgery
10. Shoulder Dislocations a Sports Hazard
11. Young Men and Elderly Women at Biggest Risk for Shoulder Dislocations
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/9/2016)... (PRWEB) , ... December 09, 2016 , ... The ... Drug Dependence, Inc. (NCADD) is recommending the film Whispering Spirits and ... the District of Columbia as an education tool in the war against teen drug ...
(Date:12/9/2016)... ... 2016 , ... Mediaplanet today announces distribution of the latest edition of “Transplants,” ... up as an organ donor for the 123,000 people in the United States who ... save up to 8 saves through organ donation and enhance many others through tissue ...
(Date:12/9/2016)... ... ... "I had a terrible time trying to get my grandson to use ... nebulizer had a more child-friendly design, then children would be more likely to look ... to avoid the need to deliver medication via a nebulizer mask. The design will ...
(Date:12/8/2016)... Tampa, FL (PRWEB) , ... December 08, 2016 ... ... been awarded accreditation with distinction by the Undersea and Hyperbaric Medical Society (UHMS), ... patients with advanced care and patient safety. Only a few hospitals and facilities ...
(Date:12/8/2016)... (PRWEB) , ... December 08, 2016 , ... ... pleased to announce that “Natural Language Processing–Enabled and Conventional Data Capture Methods for ... JMIR Medical Informatics . , Results of the comparative usability study demonstrate ...
Breaking Medicine News(10 mins):
(Date:12/9/2016)... , Dec. 9, 2016 Department of ... temporary regulations for medical marijuana dispensaries under Act 16 ... Bulletin , and are now available online . ... needed in the plan for operation; process for dispensing ... as well as where the dispensary facilities can be ...
(Date:12/9/2016)... 9, 2016  Forge Therapeutics, Inc. today announced ... Exchange: EVT, TecDAX, ISIN: DE0005664809) to advance its ... treatment of bacterial infections including those caused by ... an attractive antibacterial target for more than the ... chemical starting points has hampered its progress. Forge ...
(Date:12/8/2016)... 8, 2016 Australia Ophthalmic Lasers Market Outlook ... Ophthalmic Lasers Market Outlook to 2022", provides key market ... provides value, in millions of US dollars, volume (in ... Excimer Lasers, Femtosecond Lasers and YAG Lasers. The ... for each of these market segements, and global corporate-level ...
Breaking Medicine Technology: