Introduction to biomechanics


Staying Safe at Work: How to Avoid becoming an OOS Statistic

It's a basic truth that the human body wasn'tthem.
made to sit still for too long. We spent tens
of thousands of years evolving in anHOW  CAN  WE  AVOID  BECOMING  A  STATISTIC?
environment that required us to move - to
find shelter, to catch food, and to keepResearch has identified three things we can
ourselves safe from predators. We've onlydo to help ensure we don't become one of
been living lifestyles that allow us to staythose statistics: posture, breaks and
sedentary for the lesser part of a hundredstretching:
years - not nearly enough time for our bodies
to  adapt  to  this  new  way  of  living.Proper  Posture
Not all of us make our livings sitting inIf you don't already know how to sit properly
front of a computer, of course. It is,at your computer, it's critical that you
however, becoming more and more common - andlearn quickly. Most companies have someone
many of us then go home and use our homein their Human Resources or Training
computers to stay in contact with friends anddepartments who's been trained to set up
family, study, or play games - all of whichworkstations correctly, and ensure you're
adds  up  to  a  lot  of  sitting  still!sitting properly - ask them for a workstation
assessment. If you work from home, you can
SO  WHY  IS  THIS  A  PROBLEM?find an excellent article on the subject at
and a diagram at or contact your local
Our bodies, as mentioned above, were builtOccupational Health & Safety office for more
for movement. Movement encourages bloodflowinformation.
- ensuring our cells are supplied with oxygen
and nutrients, and ensuring waste productsRegular  Breaks
are collected and transported to where they
can be eliminated. Lack of movement leads toMost of us know how important it is to take
cells being both starved of needed nutrientsregular breaks. Simply stopping and relaxing
and left to wallow in waste products. Whenfor a few moments every 20 minutes can make a
this is then combined with stress-inducedhuge difference. Actually standing up and
muscle tension (which further constrictswalking around once an hour will do even
bloodflow) - or lots of repetitive smallmore. It doesn't have to be far - just enough
movements - well, I'm sure you can see whereto get you to move, and get your blood
problems  might  lie.flowing a little more freely. Set an alarm on
your computer to go off regularly to remind
These dangers aren't news to us. We've allyou  when  you  should  be  taking  a  break.
heard of Repetitive Strain Injury (RSI),
Occupational Overuse Syndrome (OOS) or WRULDStretching
(Work Related Upper Limb Disorder). These are
different terms for what is essentially theThe final thing you can do to protect
same problem - constant repetition of smallyourself is to stretch out all the muscles
movements (like keyboarding, or using aand joints that end up cramped up when you're
computer mouse) in a context of very fewsitting at a computer. Stretching helps
larger movements. Left for too long, this canrelax muscles that have a tendency to tense
cause tingling, numbness, pins-and-needles,up, and is probably the singlemost important
and gradual weakening of the affected area.part of helping you avoid OOS. For a short
And let's not forget that it can also causelist of some of the stretches that will be
intense, debilitating pain, and prevent ushelpful to perform regularly, please click on
from working. OOS is *not* a fun condition
to  develop.
NEED  HELP  PUTTING  IT  INTO  PRACTICE?
A 2002 Australian study (quoted on found
that these work-related muscle and softJust as the dangers of OOS aren't news to
tissue injuries made up more than 60% of allmany of us, neither are the things we can do
workplace injuries. Another study (quoted onto avoid it. However, it's easy to get caught
showed that out of just over 1,000up in our work - in the pressures of looming
questionnaire respondents, over 130 haddeadlines. All too often, we sit down with
actually put in compensation claims for OOSthe best of intentions for working safely,
and well over 600 others reported symptoms ofthen look up and discover three hours have
OOS without claiming for them. Thesegone past since we last took a stretch break.
statistics can be very frightening -And then, of course, there's the question of
especially for those of us who work withexactly which stretches we should be doing,
computers on a daily basis, and could loseand making sure we're doing them right.
our livelihoods if we became unable to use



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