Good Computing Ergonomics; How To Relieve or Prevent Repetitive Strain Injury (RSI)
Sit Up Straight!
Although we spend the most amount of time in front of a computer sitting down, it does not mean that it is not 'dangerous' to us. In fact, we may accumulate injuries without even knowing it; until it hurts, that is.
With prolonged computer use, a common body part to experience RSI would be the wrist. Common conditions could be tendinitis or carpal tunnel syndrome. This would commonly be due to usage of a computer mouse. Proper posture alone may not be sufficient, so this Hub aims to highlight a few methods to prevent or relieve RSI, namely by:
- Maintaining proper posture
- Doing some simple exercises
- Using keyboard shortcuts
- Using ergonomic keyboard/mouse
Do let us know in the comments if anything helps you.
PS: this is NOT a medical Hub; please seek professional medical advice should you have any hints of a medical condition.
Maitaining Proper Posture
Ever since we're young, we've been told that posture is very important. However, for the modern worker, posture is not the only factor to help relieve or prevent RSI.
The image on the right shows the correct way to position your screen, chair, body and hands.
Favourite RSI Preventive Exercises
10 Simple Exercises
Exercise 1. Deep Breathing for Overall Relaxation
Inhale through your nose and exhale through your mouth. Repeat 6 times.
Exercise 2. Relief of Hand and Finger Tension
Make a tight fist with your hands. Hold for a second and then spread fingers apart as far as you can. Hold for 5 seconds. Repeat 4 times.
Exercise 3. Relief of Hand and Wrist Tension
Hold hands in front of you. Raise and lower hands to stretch muscles in the forearm. Repeat 6 times.
Exercise 4. Relief of Shoulder Tightness
Raise arms to the sides with elbows straight. Slowly rotate arms in small forward circles. Lower arms. Repeat twice.
Exercise 5. Relief of a Stiff Neck
Turn your head slowly from one side to the other. Hold each turn to the count of three. Repeat motion 5 times in each direction.
Exercise 6. Relief of Arm Tension
Raise your arms over your head, stretching as high as you can. Hold for three seconds. Then bring your arms down. Rest a moment and then repeat 3 times.
Exercise 7. Relief of Shoulder and Back Tension
Raise your hands to shoulders. Keep elbows down. Using arms, push back the shoulders. Hold for 10 seconds and repeat 3 times.
Exercise 8. Relief of Lower Back Tension
While sitting, lower your head and slowly roll your body as far forward as you can toward your knees. Hold for 10 seconds. Push yourself up with your leg muscles. Repeat 3 times.
(Caution: Be sure that your chair is stable and does not roll while you are bending).
Exercise 9. Relief of Cramping and Tightness in Legs
While sitting, grasp the shin on one leg and pull toward your chest. Hold for 5 seconds. Then do the other leg. Repeat 3 times.
Exercise 10. Relief of Eye Fatigue
Roll your eyeballs around clockwise three times, then counterclockwise three times.
Using Keyboard Shortcuts
Most of us would use Windows. While using a keyboard and mouse would be the most intuitive method to navigate Windows for most users, if you have a painful wrist from prolonged usage of the mouse, you might not bee too keen on this method of navigation. This is where keyboard shortcuts come in.
There are many keyboard shortcuts built into Windows. Many let you do an action without moving the mouse cursor to a small part of the screen, which should reduce the need to move your painful wrist.
Below is a list of keyboard shortcuts.
Press this/these buttons
To do these actions
Ctrl+C (or Ctrl+Insert)
Copy the selected item
Cut the selected item
Ctrl+V (or Shift+Insert)
Paste the selected item
Undo an action
Redo an action
Delete (or Ctrl+D)
Delete the selected item and move it to the Recycle Bin
Delete the selected item without moving it to the Recycle Bin first
Rename the selected item
Move the cursor to the beginning of the next word
Move the cursor to the beginning of the previous word
Move the cursor to the beginning of the next paragraph
Move the cursor to the beginning of the previous paragraph
Ctrl+Shift with an arrow key
Select a block of text
Shift with any arrow key
Select more than one item in a window or on the desktop, or select text within a document
Ctrl with any arrow key+Spacebar
Select multiple individual items in a window or on the desktop
Select all items in a document or window
Search for a file or folder
Display properties for the selected item
Close the active item, or exit the active program
Open the shortcut menu for the active window
Close the active document (in programs that allow you to have multiple documents open simultaneously)
Switch between open items
Use the arrow keys to switch between open items
Ctrl+Mouse scroll wheel
Change the size of icons on the desktop
Cycle through programs on the taskbar by using Aero Flip 3-D
Use the arrow keys to cycle through programs on the taskbar by using Aero Flip 3-D
Cycle through items in the order in which they were opened
Cycle through screen elements in a window or on the desktop
Display the address bar list in�Windows�Explorer
Display the shortcut menu for the selected item
Open the Start menu
Display the corresponding menu
Perform the menu command (or other underlined command)
Activate the menu bar in the active program
Open the next menu to the right, or open a submenu
Open the next menu to the left, or close a submenu
F5 (or Ctrl+R)
Refresh the active window
View the folder one level up in�Windows�Explorer
Cancel the current task
Open Task Manager
Shift when you insert a CD
Prevent the CD from automatically playing
Switch the input language when multiple input languages are enabled
Switch the keyboard layout when multiple keyboard layouts are enabled
Right or Left Ctrl+Shift
Change the reading direction of text in right-to-left reading languages
Best Ergonomic Peripheral?
Which is better in preventing/alleviating RSI; keyboard or mouse?
Using Ergonomic Keyboard/Mouse
The most expensive option, but ergonomic keyboard and mouse might just be the last piece of the puzzle in preventing or alleviating your RSI. Most work on these 2 principles:
Keyboards - Ergonomic keyboards have a curved/split design to mimic the way your 2 hands are aligned in front of the computer screen
Mouse - Ergonomic mouse allow your hands to grip them while reducing the unnatural twist. To illustrate this point, raise your hand out to shake someone's hand. This is the 'natural' angle your wrists should be at. Now lower your hand to your mouse WITHOUT twisting your wrist. See how 'unnatural' this is?
Ergonomic computer peripherals might go a long way in helping prevent or alleviate your pain, but they do cost more (for most products, several times more than a comparable non-ergonomic product) and are not exactly easy to find. Here are some I've used that worked well for me:
For more choices, please see the links below.