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raghuvaran chakkaravarthy
497

Dear AVS, Prasad, Chandra,
Thanks for your words. . .
Dear all,
Please take a look on attached ergonomics related video hope its helps. . . For more safety videos please follow safety videos library-II (SVL-II) thread. . .
Keep on sharing. . .

From United States, Fpo
Attached Files (Download Requires Membership)
File Type: zip Ergonomia BNDES.zip (2.50 MB, 66 views)

raghuvaran chakkaravarthy
497

Tips on Fast and Healthy Typing



This write up helps you get maximum safety and comfort from working on your computer keyboards. Have a quick look at tips on avoiding forearm and hand problems:

Reduce wrist deviation. Use a thin profile keyboard and/or a palm rest to support the heel of the hand. When your hands are resting on the keyboard, make sure they are in a straight line with the forearm.

Put the keyboard on a flat surface about 68-73 cm from the floor. The armrests of your chair have to be adjusted low enough so you do not have your shoulders shrugged and high enough so you do not have to slump to rest your elbows on the armrests. Never put your body's weight on your arms.

Keyboard angle needs to be adjusted. Find the best angle. Ergonomic keyboards like Microsoft Natural Keyboard have better adjustment options. Those keyboards have a central split and a form that allows to effectively place your hands.

Introduce regular breaks at 30-60 min intervals. Drink some water, call someone, make few photocopies, if needed.

Performing wrist exercises such as those listed below can help reduce injuries to the arm, wrist and hand.

Relaxing Exercises

Circles: Stretch both arms outwards with fingers together and draw a circle with your hands, rotating them at the wrist. Five circles in one direction, then five in the opposite direction.

Extension: Hold arm outward with palm facing down. Raise the hand up as though you were telling someone to stop. Using the opposite hand, apply pressure to the palm of the raised hand. Hold pressure for five seconds, then relax. Repeat for a total of three times per hand.

Curls: Hold arm outward, with the palm facing down. Drop the hand downward at the wrist. Using the palm of the opposite hand, apply pressure to the back of the dropped hand. Hold pressure for five seconds, then relax. Repeat three times per hand.

Stretches: Spread the fingers of both hands far apart. Hold for five seconds, then relax. Repeat for a total of three times.

Thumb Stretches: Have your the hand placed in a position similar to the wrist extension, gently apply pressure using the other hand to the extended thumb in a back and downward direction. Hold for five seconds and relax. Repeat this three times per hand.

From United States, Fpo
Mohan@citehr.com
2

Really a useful tip to many a people in the forum.
Almost all people tend to have this habit of sitting with their wallet in the backside pockets.
Thanks for sharing with the forum members.
Regards,
Mohan.

From India, Mumbai
raghuvaran chakkaravarthy
497

Ergonomic Tips to Choosing and Using Laptop Computers



Modern laptop or notebook computers are small, portable devices with the computational power of desktop systems. Sales of laptop computers now exceed those of desktop systems and this trend will continue. However, all laptops currently sold suffer an ergonomic design flaw; the keyboard and screen is connected. This means that when the screen is correctly adjusted for neck posture, the keyboard is wrongly positioned and vice versa. This same problem faced the earliest personal computer designs in the 1970s, and since then all desktop systems have separated the screen and keyboard. So what can be done to make the use of laptops more ergonomic and to protect you against other problems with this technology, such as the weight and heat of the laptop?

Work Pattern Decisions

As a laptop user your first decision has to be about the duration and intensity of use of the laptop. If you are an occasional user who uses your laptop for less than 1-hour per day you probably don't need to be concerned, but if you are a full-time user you should attend to the following ergonomic considerations.

Work Posture

Using a laptop is a tradeoff between poor neck/head posture and poor hand/wrist posture. If you are an occasional user you should sit in a comfortable chair with your laptop in your lap to allow the most neutral wrist posture, and you should tilt the screen back to minimize neck flexion.

If you are a full-time user you should put your laptop in front of you on your desk so you can see the screen without bending your neck. This may require that you elevate the laptop off the desk surface with a stable support surface or laptop holder. Then use a separate keyboard and mouse, properly positioned for greatest comfort. If your laptop has a small screen you might also want to use a separate larger monitor as well.

Laptop Dimensions

Many laptops offer large and wide screens (15-17" plus) which give you a viewing area equivalent to a 17"-19" monitor. However, a large screen means a large body and the laptop might be heavy, bulky and difficult to use in confined spaces, such as on an airplane. Think about where you will use your laptop, how often you will have to carry the laptop and choose the best size to meet your needs. The advantage of a larger laptop is a bigger screen and keyboard but, at the expense of easy mobility. Small notebooks or ultra-portable laptops offer advantages. For example, they are lightweight and make being mobile easier. However, smaller devices mean smaller keyboards and screens. Always check out the laptop size to make sure you can read the screen and use the keyboard.

Laptop Weight

If you plan to frequently transport your laptop, think about the weight of the total system, which includes the weight of the laptop plus the required accessories (e.g. power supply, spare battery, external drives, etc.). Sometimes when you add the weight of all the components together a lightweight portable with external drives can weigh almost the same as a larger laptop with internal drives. If your laptop plus components weigh about 10 pounds or more, then you should consider using a pull along laptop bag.

Laptop Heat

Laptops produce heat and unless the laptop is well-ventilated it can overheat and crash your hard drive. A hot laptop is uncomfortable to use in your lap and the heat from some laptops can be enough to cause superficial skin burns, even through clothing. Also, researchers have found that working with a laptop positioned on the thighs significant elevates groin skin temperature and long-term repeated exposure to a hot laptop used in the lap may reduce fertility, especially in teenage boys and young men. Various cooling pads designed to reduce this problem are available and should be used if this is the main way that you use your laptop.

Hope its helps. . .

From United States, Fpo
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