The Use Of BlackBerry Devices
A BlackBerry device is a wireless handheld instrument which enables ‘on the go’ e-mail, internet browsing, word processing, telephone and text messaging as well as other information services. The use of BlackBerry devices has exploded in recent years for both personal and work use. Because they are a relatively new group of devices there are no major studies evaluating the ergonomic aspects of their use. Despite their obvious advantages regarding size, portability and multi-functionality, they are not without their drawbacks and additional ergonomic considerations.
The first consideration is that the thumb is not designed to be dexterous, and on an ordinary keyboard the use of the thumb is normally limited. The design of the BlackBerry means that most people use their thumbs to strike the key; and equivalent repetitive movements are more likely to put strain on the thumb. BlackBerry devices may encourage over use, compared with mobile phones say, as the number of words that can be used is unlimited, thus encouraging repetitive movements for longer periods of time.
Employing a device that encourages inappropriate thumb postures and fosters over usage could lead to symptoms of pain and swelling as a result of constant stretching and rubbing of tendons over the thumb joint. Potentially, over usage could lead to the development of more serious conditions such as ‘Trigger Thumb’, ‘DeQuervain’s Tenosynovitis’ and ‘Carpal Tunnel Syndrome’ all of which can be difficult to resolve and increase susceptibility to recurrence. Finally, it should be noted that BlackBerry usage could contribute to problems with stress, if there is a strong dependency on the device that is associated with a failure to manage information, message and time demands.
How to reduce the risk of ergonomic problems?
- Plan for the sensible and safe use of the BlackBerry as one tool to assist with your work and leisure.
- Key as little as is necessary.
- Avoid thumb typing where possible. For example, use your PC or the phone instead or use a portable keyboard (there are specially designed keyboards on the market to which a BlackBerry can be attached)
- Take frequent rest breaks and stretch thumbs and fingers to alleviate static postures and repetitive movements
- Adjust font size of display screen and avoid glare to ensure visual comfort