Alternative sitting postures by the computer
September 1st, 2008 by draguFor some time I’ve been wanting to reorganize my room to somehow balance out the height differences between my pieces of furniture - I have a pretty tall work desk whereas the rest of the furniture is very low - so I decided to lower my work desk a bit but didn’t actually do anything about it for a number of weeks.
So today I decided I should try out alternative sitting postures by the computer that would work well with my lowered desktop, standing around a forearm’s length from the ground. After some googling on alternative sitting postures by the computer I found that people don’t seem to experiment much with alternative sitting postures since I found nothing of value. At one point when I had moved to a new apartment I had sat with my computer and screen on the floor with my legs crossed(tailor style, agura), but quickly found that it put a lot of strain on the back and made more challenging computer use (such as playing games) difficult. I concluded I needed to experiment with different postures, and that is what this entry is about. I will keep updating it when(and if) I make new discoveries.
Some specifics on my desk: It is a wooden panel about 3cm thick with a working area of about 100 cm x 150 cm. It is currently supported by two computer cases both measuring 42,5cm in height. Computer cases were simply what I had lying around with roughly correct height and enough surface (and sturdyness) to keep the desk stable. I keep my 22″ widescreen monitor about 50cm from the front edge of my desk, my keyboard being very close to the edge.
Experiment #1 - seiza
My first idea was to employ a posture I had become familiar with through pranayama-yoga; the vajrasana or “diamond” posture, very similar to the Japanese seiza. Having built a small kneeling chair around a around a year ago, I was eager to try out the posture in computer use. I quickly learned I needed something softer than the hard floor beneath me, so I put a cloth underneath to add comfort.
Pros
- It prevents you from slouching forward (the usual keyboard posture)
- You might be able to concentrate on the task at hand due to good posture
- Eating is comfortable in this position as long as the table is of proper height
- Your upper body is somewhat free to move around
Cons
- Unless you are accustomed to the posture (like the Japanese), you will experience
- Poor blood circulation in the legs
- The accompanied pain and numbness
- Problems getting up and possible danger to joints due to standing on numb limbs
- Takes time to get used to
- The feet are hard to get into a comfortable position
- Isn’t easily upheld for long periods without practice
Experiment #2 - agura
My second idea which developed quite quickly after sitting in position #1 for about an hour or so, was to sit on the kneeling chair in a tailor (Japanese agura) position. This is pretty comfortable to me and I can imagine varying between the agura and seiza positions. The chair might help those who have problems sitting in the tailor position on the floor. If necessary, the legs can be stretched out to assist circulation.
Pros
- Easily attained, familiar to most
- Comfortable even for longer periods
- Upper body is somewhat free to move around, but not as much as in seiza due to different balance
Cons
- Easily turns into slouching
- Might contribute to back pain, just like sitting in an office chair
Update:
After sitting in these positions for an evening, I no longer even think about that I’m practically sitting on the floor. I’m amazed by how quickly I’ve gotten used to this.
Experiment #3 - on my back
I’ve wanted to experiment with using a computer while lying on my back for some time, so this was a natural next step, albeit a bit radical compared to the previous ones. Since I had no possibility (,material, or time) to construct a proper framework to somehow elevate a monitor above me while I lie beneath it, I took one of my laptop computers and opened it into a regular working angle, around 100 degrees and slid it (the keyboard vertically) into a box of some weight (to prevent the thing from tipping over, onto my head) which I placed on my desk under which I laid myself with some pillows producing a “futon” of sort.
So now I have the possibility of trying out what it’s like, although the construction is very unpolished and much could be made better. Some discoveries I made:
- Looking at a computer display while lying down is pretty different from sitting at a desk because you can’t move or turn your head around much. This in turn implies that you will have to move your eyes much more to look at the different parts of the screen.
- You will focus much more on a certain part of the screen, for eg. the center, which means you will either have to have a smaller screen (size relative to your effective FOV) to minimize the need to move around your eyes all the time, or use a user interface designed from a centric perspective, ie. one that you are able to use without really moving your eyes much. I realized this is the same issue you face when you design user interfaces to be used with video goggles, in which the point is missed if you have to move your eyes away from the natural direction to look, straight ahead.
- If you lie on a futon of sorts like I now do, you will want it to be sloped in a very small angle so that you will be looking very close to straight up into the roof. If you slope it in a larger angle, like you usually do with lounge chairs, your neck will become tense and tired, and will be drawn to slouch downward, causing discomfort.
- It is important to be able to adjust the angle, position and distance of the screen to suit the individuals needs. This calls for some sort of adjustable rack for the monitor, fastened on a wall or in the roof.
- The positioning of the keyboard is challenging. I held my keyboard in my lap which worked pretty well, but some sort of adjustable platform would be better. One way would be to have the keyboard roughly vertical above your groin, which would allow sufficient hand movement without too much strain.
- A regular mouse is pretty much out of question. A touchpad large enough for proper desktop use should suffice, meaning somewhat larger than the usual laptop sizes. A touch screen could be a nice extra but can’t be used exclusively.
- Using a computer in this position is quite comfortable given that you address the above issues. I might imagine falling asleep by mistake simply due to the comfort.
Posted in english | 1 Comment »
