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Health Update

Wednesday, November 15, 2017

Courtesy of Russell R Van Hemert DC

Ergonomics for Mouse-Intensive Jobs

Use the Mouse or Input Device Safely

The further you reach to hold and use the mouse, the more strain you place on your neck. There are alternative techniques and equipment that may help. • Change your position to keep your elbows relaxed at your sides with the mouse directly in front of you, not to the side. • For precision tasks, move the mouse from the wrist, not the fingers. For tasks not requiring as much precision, try to move the whole arm to avoid overuse. • Make sure the mouse fits your hand. If it is too small, squeezing the mouse may cause hand cramping. This also places strain on your wrist and may cause pressure on the median nerve in the carpal tunnel. • Remove watches or bracelets that interfere with movement. • If you keep resting on your wrist, consider putting a thin gel pad under it for support. • Adjust your cursor speed. If it is too fast, you will grip the mouse tighter to gain control. If it is too slow, you will repeatedly grasp and pick up the mouse to reposition it. • A second trackball or mouse on the left of the keyboard allows you to give your right arm a break. Use the secondary device for e-mail, navigating documents and the Internet, and other non-precision tasks.

Adjust Your Monitor

• Center the screen in front of you. • If you use two monitors and use each screen equally, place them so you are seated where they meet in the middle, so you look to the left and to the right equally. • If you use one monitor more than the other, place the primary monitor centered in front of you and the secondary monitor directly next to it, slightly angled toward you. • The screen should be about an arm’s length away. • Place the top line of the glass of the monitor at eye level. If you use bifocals, lower the screen slightly until your head is level and you are not looking upward. • To reduce eye strain, adjust the brightness and contrast controls, as well as the ambient room light, to make them equal. • Avoid glare. Place the monitor perpendicular to windows or draw the blinds. A glare filter can also help.

Sit Properly

 • Take the time to adjust the chair to fit you. • If you have neck or shoulder discomfort, raise the armrest of your chair to support your forearm without pushing the shoulder toward the ear. • The ideal chair for these types of jobs places you in an upright posture and encourages fullarm movement. A pear-shaped back design provides spinal support while freeing your shoulder blade and arm to move properly

Take Advantage of New Technology

 • A keyboard that has a detached number pad or one positioned on the left can help keep your elbows relaxed. If you need to do significant typing, simply slide the chair to center it in front of the keyboard. • If your computer work requires you to draw, graphics tablets can help. These call for a more natural and relaxed position of the hand, wrist, and forearm. They also encourage healthier whole-arm movement and reduce contact pressure on the sensitive carpal tunnel. Once you are used to graphics tablets, they offer increased control and precision. Choose the smallest tablet that lets you comfortably do your job.

By ACA

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