Something you should know about an ergonomic use of Laptop at home.
Lounge-tek’s supports improve laptop ergonomic features and other mobile devices as Tablet, iPad E-book Reader. With Lounge-book and Lounge-wood your sofa, armchair, even bad will be your favorite workplace to use comfortable Laptops and Tablet PCs.
Here you can find Suggestions, Tips, Links to scientific articles. Learn more about the ergonomic use of Laptop and Tablet PC. Laptop computers are lightweight, portable and convenient. Unfortunately, the laptop’s compact design, with attached screen and keyboard, forces laptop users into awkward postures. When the screen is at the right height, the keyboard position is too high; when the keyboard is at the right height, the screen is too low. This creates an ongoing trade-off between poor neck or head and hand or wrist postures.
Lounge-book: a Smart solution to prevent poor posture using Notebook and Tablet at home.
Certified by Italian Posturologists Association (A.I.R.S.P).
We started the lounge-book project, with the target to find the most comfortable way to use digital device at home. We also have found answers to many issues about ergonomic laptop problems.
Lounge-book was tested by AIRP “Italian Posturology Association” . AIRP is a Non-profit association that share experiences in the various branches of Posturology : such as ophthalmology, the gnathology, orthopedics, neurology. This review, is a significant opinion to highlight prevention of some diseases, caused from a wrong posture using laptop and tablets.
“Lounge-book is More than a laptop ergonomic accessories, it’s an aid to prevent postural defects. The incorrect position of those sitting at the PC is the enemy of our spine, expecially for who’s forced to stand still in a wrong posture for many hours. The Laptop causes the most issues of ergonomics, it does not allow easy adjustment of keyboard and screen, because these two elements are indivisible. This is unfortunately characteristic of these devices: if the screen is at eye level means that your wrists are facing up and after some time, may comes articulation disorders such as carpal tunnel syndrome. If your wrists are parallel to the floor, means that the gaze is directed downward, pressing for the neck and causing disorders of the cervical spine as:
- cervical tension
- cervical brachalgia
- cervical disc arthrosis
- herniated cervical disc
What determines a pain in the spine, is the incorrect sitting POSTURE. A fixed chair with no adjustable elements is the cause of the alteration (reduction or enhancement) of the physiological curves of the spine and this favoring :
- lumbar sciatica
- lumbar disc herniation
Lounge-book was designed after research in ergonomics in order to reduce the risk of these diseases of the skeletal muscle. This simple and versatile accessory lets you use your PC in any area of your home or workplace, where, thanks to its structure, it is possible to adapt it to each location: in an armchair , sofa, on a chaise-longue and also on the bed. We can say as experts in posturology , that this device meets all the ergonomic features, in order to make the computer, less stressful and therefore more comfortable under physical and psychological factors”
Laptop or desktop, what’s better for your spine health?
Laptops have replaced desktops in almost every office and home. Consider it a style statement or the convenience to carry it from one place to another, laptops are a rage. There are others who still like the desktops for a variety of technical reasons. Whichever you use, both laptops and desktops have their set of cons and can affect your back and spine…. MORE
Laptops, Radiation and Thermal Risks
We get insights of this topics, in a special post at this LINK
10 tips to find a good posture using laptop at home
The following 10 questions can help you decide on what will be a good ergonomic design for your situation:
1-How will the computer be used? Who will be using the computer?
If the computer will only be used by one person then the arrangement can be optimized for that person’s size and shape; features such as an adjustable-height chair may be unnecessary. If the computer will be used by several people, you need to create an arrangement that most closely satisfies the needs of the extremes
2-How long will people be using the computer?
- Few minutes a day. Ergonomic issues may not be a high priority.
- More than 1 hour per day. It is advisable that you create an ergonomic arrangement.
- More than 4 hours. You should immediately implement an ergonomic arrangement.
3-What kind of computer will be used?
Laptop computers are growing in popularity and are great for short periods of computer work. Guidelines for laptop use are more difficult because laptop design was achieved for a mobile use. For sustained use at home you should consider purchasing an adjustable laptop stand to create a good workstation layout.
4-What furniture will you use?
Make sure that the computer (monitor, CPU system unit, keyboard, mouse) are placed on a stable working surface (nothing that wobbles) with adequate room for proper arrangement. If this work surface is going to be used for writing on paper as well as computer, you need a flat surface that is between 28-30 inches above the floor (suitable for most adults). You should consider attaching a keyboard/mouse tray system to your work surface. Choose a system that is height adjustable, that allows you to tilt the keyboard down away from you slightly for better wrist posture, and that allows you to use the mouse with your upper arms relaxed and as close to the body as possible and with your wrist in a comfortable and neutral position. Those are Lounge-book’s Features!
5-What chair will be used?
Choose a comfortable chair for the user to sit in. If only one person is using it, the chair can even be at a fixed height, providing that it is comfortable to sit on and has a good backrest that provides lumbar support. If more than one person will be using the computer, consider buying a chair with several ergonomic features. Studies show that the best seated posture is a reclined posture of 100-110 degrees – NOT the upright 90 degree posture that is often portrayed. In the recommended posture, the chair starts to work for the body, and there are significant decreases in postural muscle activity and in intervertebral disc pressure in the lumbar spine. Erect sitting is NOT relaxed, sustainable sitting – reclined sitting ….. With a Lounge-book, you can use your favorite or ergonomic chair, sofa, and even bed.
6-What kind of work will the computer be used for?
Try to anticipate what type of software will be used most often. Word processing – arranging the best keyboard/mouse position is high priority. Surfing the net, graphic design – arranging the best mouse position is high priority. Data entry – arranging the best numeric keypad/keyboard is a high priority. Games – arranging the best keyboard/mouse/game pad is a high priority.
7-What can you see?
Both your documents and the computer monitor should be positioned for easy viewing.
Make sure the monitor is in front of you and facing you, not angled to the left or right. This helps to eliminate excessive neck twisting. Also, use the screen scroll bars to ensure that whatever is being viewed most is in the center of the monitor, rather than at the top or bottom of the screen.
Center the monitor so that your body and/or neck isn’t twisted when looking at the screen. However, if you are working with a large monitor and spend most of your time working with software like MS Word (which defaults to creating left-aligned new pages) and you don’t want to have to drag these to more central locations, try aligning yourself to a point about 1/3 of the distance across the monitor from the left side.
Put the monitor at a comfortable height that doesn’t make you tilt your head up to see it or bend your down to see it. When you are seated comfortably, your eyes should be in line with a point on the screen about 2-3″ below the top of the monitor casing (not the screen). Sit back in your chair at an angle of around 1
00-110 degrees (i.e. slight recline) and hold your right arm out horizontally. Your middle finger should almost touch the center of the screen. From that starting position you can then make minor changes to screen height and angle to suit. Research shows the center of the monitor should be about 17-18 degrees below horizontal for optimal viewing, and this is where it will be if you follow the simple arm extension/finger pointing tip. You actually see more visual field below the horizon than above this (look down a corridor and you’ll see more of the floor than the ceiling), so at this position you should comfortably be able to see more of the screen. If the monitor is too low, you will crane your neck forward; if it’s too high, you’ll tilt your head backwards and end up with neck/shoulder pain.
Bifocals and progressive lens – Even if you wear bifocals or progressive lenses, if you sit back in your chair in a reclined posture (with your back at around 110 degrees), and if you slightly tilt the monitor backwards and place it at a comfortable height, you should be able to see the screen without tilting your head back or craning your neck forward. Postural problems with bifocals can occur if you sit erect or even hunched forward. The problem with low monitors is that they cause neck flexion and suffer more from glare. Recent studies have shown that the best position for a computer monitor is for the center of the screen to be at around 17.5 degrees below eye level. Try to align your eyes with the top of the viewing area of the screen; this should put the center about right geometrically.
Viewing distance – The monitor should be at a comfortable horizontal distance for viewing, which usually is around an arm’s length. Sit back in your chair and raise your arm and your fingers should touch the screen. At this distance, you should be able to see the viewing area of the monitor without making head movements. If text looks too small, then either use a larger font or magnify the screen image in the software rather than sitting closer to the monitor
Screen quality – Use a good quality computer screen. Make sure that the text characters on your screen look sharp, and that they are a comfortable size. (You can change the screen resolution to find a comfortable and clear character size). If you can see the screen flickering out of the corner of your eye, you should try increasing the refresh rate of your monitor. (On a PC, you can change monitor resolution and refresh rates using the monitor control panel in your settings folder. On a Mac, you can use the monitor control panel). You may also consider using a good quality glass anti-glare filter or an LCD display (like a laptop screen).
Eye checkup – There are natural changes in vision that occur in most people during their early 40s. It’s a good idea to periodically have your eyes checked by a qualified professional.
Screen adjustments – If any screen adjustments feel uncomfortable, change them until the arrangement feels more comfortable or seek further professional help.
Good posture is the basis of good workstation ergonomics and is the best way to avoid a computer-related injury. To ensure good posture: Make sure that you can reach the keyboard keys with your wrists as flat as possible (not bent up or down) and straight (not bent left or right). Make sure that your elbow angle (the angle between the inner surface of the upper arm and the forearm) is at 90 degrees or greater to avoid nerve compression at the elbow. Make sure that your upper arm and elbow are as close to the body and as relaxed as possible for mouse use – avoid overreaching. Also make sure that your wrist is as straight as possible when the mouse is being used. Make sure your chair has good back support. Also check that your feet can be placed flat on the floor or on a footrest. Make sure your head and neck are as straight as possible. Make sure your posture feels relaxed. Keep it close Make sure that those things you use most frequently are placed closest to you so that they can be conveniently and comfortably reached. Make sure that you are centered on the alphanumeric keyboard. Most modern keyboards are asymmetrical in design (the alphanumeric keyboard is to the left and a numeric keypad to the right). If the outer edges of the keyboard are used as landmarks for centering the keyboard and monitor, your hands will be deviated because the alphanumeric keys will be to the left of your midline. Move the keyboard so that the center of the alphanumeric keys (the B key) is centered on your mid-line. Make sure that the phone is also close to you if you frequently use it. A good workstation ergonomic arrangement will allow any computer user to work in a neutral, relaxed, ideal typing posture that will minimize the risk of developing injury. Ideally, your keyboard should be placed on a height-adjustable negative-tilt tray. The mouse should be on a flat surface that’s 1-2 inches above the keyboard and moveable over the numeric keypad. If you want a surface at the level of the keyboard’s base, then make sure that this surface can also be angled downwards slightly to help to keep your hands and wrists in a neutral position while you are using your mouse. Also, keep your elbows as close to the body as possible while you work.
9- Where will the computer be used?
Think about the following environmental conditions where the computer will be used: Lighting – Make sure that the lighting isn’t too bright. You shouldn’t see any bright light glare on the computer screen. If you do, move the screen, lower the light level, or use a good quality, glass anti-glare screen. Also, make sure that the computer monitor screen isn’t backed to a bright window or facing a bright window so that the screen looks washed out (use a shade or drapes to control window brightness). Ventilation – Make sure that you use your computer somewhere that has adequate fresh-air ventilation and that has adequate heating or cooling so that you feel comfortable when you’re working. Noise – Noise can cause stress; stress tenses your muscles, which can increase injury risks. Try to choose a quiet place for your workstation, and use low volume music (preferably light classical) to mask the hum of any fans or other sound sources
10-Take a break!
All ergonomists agree that it’s a good idea to take frequent, brief rest breaks.