Chris’ Q&A – Living room seating

verte_right_top_0Q: I am writing since I know you are an expert in the good for you back furniture field. I wanted to know if you had any suggestions for living room furniture that may be good for backs. If you could point me in the right direction I would be grateful!!! (DT, Dallas TX)

A: I don’t have any hard recommendations, but I do have some suggestions beyond the obvious need for the overall fit to be good (seat depth matching thigh length, matching lumbar support contour height and shape, shoulder contact pattern supportive but with good head posture and without inward shoulder rotation).

First, avoid seating with soft deep cushions, or cushions that easily break down over time becoming soft and saggy. There are two postural reasons: soft cushions tend to be too low and also create the “sitting in a bucket” effect. Both issues promote a “C” spine posture with extra stress on knees and hips due to the low height.

Here is where quality really counts (especially the quality that you can’t see). We bought a decent, good quality, sofa set about 15 years ago. It had wonderfully firm cushions with a good fit. However, within about 5 years the cushions softened up and now I no longer sit on it (Deb seems to do OK with extra pillows). We still like the look of it in our space, but…

I almost exclusively use my Ekornes Stressless Recliner. Ekornes seems to do a good job on the quality (I have not noticed any cushion degradation in the 10+ years I have been using it). They are available as singles or sofas, in a very wide variety of styles, shapes and sizes, so it is important to take your time and find the right fit for you. Unfortunately, the model that fits me best has been discontinued, but you can take a look at what they are doing now at: http://www.ekornes.com/us/stressless-recliners/stressless-chelsea-stressless-mayfair-stressless-kensington/mayfair#tab_stressless_sizeguide .

Note the construction style: the best ones have a layer of fairy dense foam supported by a substructure that won’t sag over time (in fact, this kind of reminds me of our office chairs).

Another approach is to find a sofa with a good seat structure which uses an assortment of free pillows that can be individually arranged to get the desired fit for the back. This provides a customizable and flexible solution, if you like the look. It also makes it very easy to turn the seat into a narrow bed by simply removing the back support pillows. But you will need to constantly rearrange the pillows to make sure your upper torso is well supported when relaxing.

When you are shopping around, I highly recommend that once you have made a tentative selection, take your favorite e-reader (or whatever you like doing for entertainment when seated in your living room) and camp out in the showroom. Pay close attention to what your body is telling you as you sit longer.

An interesting factoid: standing and walking stresses your back in the opposite way that sitting does. As a result, a bad seat will feel great … for a short while after being on your feet. Give it at least 20 minutes to hear what your body has to say, and longer than an hour might be prudent before making a larger investment in a whole set. Do this, even if they offer a free return policy (which is nice), since most of us would hesitate to send it back once it is in place.

For those who truly value function, and can live with a more office-y look in their home, a fully adjustable high back office chair can make a very effective custom fit recliner. Just this past week, I fit a client for such a chair for home use since she could not find anything in the home furnishings market that worked as well. We customized a chair and footstool that provided just the right back support and leg elevation that met her needs.
Chris Krebs
chris@ergoAK.com
Sitting Reclined

PS- I would gladly weigh in on the fit if you email or text me some profile pictures of you standing and then sitting in the furniture you think is in the running (my blog readers are included in this invitation).

Chris’ Q&A – Some tips on pacing tricks

Move ItQ: Can you suggest a method to help remind people to take frequent breaks? If they don’t change positions often, everything else we do will not help much. Remembering to take a break is hard because if you wait till you need a break it is already too late, so you have to remember to take a break before your body tells you that you need one. Do you have any tricks that you use? (Doc, Fairbanks AK)

A: I will certainly revisit this one again later, but let me make a few quick notes:
First off, ergonomics is not just good postures, or not just providing movement and change. I do not endorse the “the next posture is the best posture” approach. However, human bodies do need movement and change. Thus the goal is to alternate from one good posture to the next good posture.
There are timers and prompting programs available on line, some complete with central monitoring and statistical reports on key strokes and mouse movement. We have at times recommended these. For myself, I prefer a more organic and integrated solution. Thus, for cues to move:
• Check the work flow for any tasks that can routinely be done in a different posture. For example, whenever I am talking on the phone, and do not need my computer at the same time, I am standing and pacing the office, not seated in my chair. The phone is a cue to move. Another similar task is reading from a paper when not writing on it. If I have more than a few sentences to read I will pick up the paper and wander the office as I read. Likewise with merely thinking and composing my thoughts.
• Meetings or conversations are often best standing or even walking. I am reminded of the numerous scenes in the show “West Wing” as the camera follows the characters through the halls as they discuss, adding new meaning to taking a “power walk”.
• I have found with the saddle seat, my butt will get sore before my back, neck or shoulders do, so it will prompt me to move more often, and the result is less back, neck and shoulder strain. It is also easier to alternate sitting/standing when using a saddle since the height difference isn’t nearly as much, and one can still access the keyboard/monitor OK from standing if it is set for saddle (not great, but definitely doable for very short durations – I am standing now as I am editing!). This is not usually an option when in a standard chair.
• Avoid “batching” like activities too much. For example, don’t save all of the filing for one session at the end of the day. Break it into shorter chunks and use it as a pacing activity throughout the day.
• Having the printer in the next room, or at least where you need to stand and walk to access it, can be very good. That way every time you print, you need to stand briefly.

An Ergonomic Ergonomics Evaluation

Ergonomics EvaluationWelcome to Office ErgoSpeak, the new Situs blog of all things office ergonomics.

– an ergonomic ergonomics evaluation?

In building our new website, an interesting question came up again that is a great place to start our conversation: “When is it proper to use the term ergonomic versus the term ergonomics?”

The simple answer is:

Ergonomic (adjective) = as in preceding something that has the characteristics of something designed for human use to do work.  For example, the usage “ergonomic keyboard.”

Ergonomics (noun) = as in the field of study or pertaining to the science of how humans do work.  For example, the usage “ergonomics evaluation”.

An “ergonomic evaluation” would be an evaluation done in an ergonomic way, not necessarily about the field of ergonomics. In fact, how to do ergonomics evaluations ergonomically is one of the things I cover when I teach the Train the Evaluator class. I am a big fan of the 3-point stance, provided that the knees can handle it, to help protect the evaluator’s neck and back while measuring and adjusting chairs and keyboard trays. There are also the postural and psychological benefits of the worker not needing to crane their neck to look at the evaluator looming over them.

That said, I usually avoid using the adjective “ergonomic.” You might be surprised to hear this from a company specializing in office ergonomics. The problem with the word “ergonomic” is that it is so often misused and abused. When I started focusing on ergonomics twenty years ago, we still had to explain what ergonomics was. Now ergonomics related words are used ubiquitously to describe almost everything.

One of my favorite props at the start of a training class is to hold up a Microsoft Natural Ergonomic 4000 Keyboard, and ask the class, “Is this an ergonomic keyboard?” To this day I still get a delightfully mixed bag of responses. Some nod yes. Others voice of vehement no. The cagey ones aren’t sure, and yet others even produce the (I believe correct) answer of “depends”.

Why the great disparity of responses? Because to answer whether something is ergonomic, you must first know who is going to be using it, what task they are doing, and where they are doing it. The MSN4000 can be a very effective and cost efficient tool to address certain ergonomics risk factors, particularly for computer workers who find themselves rolling their shoulders forward, squeezing their thumbs together and bending their wrists sideways toward the pinkies to access a standard keyboard. These are the people who often answer with a most enthusiastic yes to the “is this ergonomic” question. However, what would happen if we then gave Naturals to everyone? Some more petite workers who do not exhibit the sideways wrist bend at a standard keyboard will instead on the MSN4000 need to abduct their arms (think flapping wings) to accommodate the wide keyboard. We have now created a problem where there was none. Further, since the arrow and number sections of the MSN4000 are more extended, workers will need to reach even more to the right if mousing right handed, creating reaching issues. And what if the worker needs to look at the keys to type? (There are still some hunt-and-peckers out there!) Having a big gap in the middle of the keyboard is going to drive them batty.

Ergonomic Wrist Strain Standard Wrist Strain

 

 

 

 

 


So, to determine if some device or modification will be ergonomic, you must always address all three of the WHO/WHAT/WHERE:

  • The worker
  • The task
  • The work space

If all three are not addressed, then we can’t determine whether a particular product or solution will be ergonomic or not. And that’s ergonomics.

Chris Krebs

Situs Ergonomics