Introduction to biomechanics


Computer Games Cause Back Pain

Are Computer games responsible for increasedconcerned with the understanding of the
back pain cases among the nation's teenagers?interrelationships of structure and function
of living beings with respect to the
The problem of low back and neck pain inkinematics  and  kinetics  of  motion"
teenagers is likely to increase significantly
in  years  to  come,Poor  Posture  associated  by  the following:
This seems on the cards considering theGenetic disorders, Familial association,
associated health problems of obesity,Irregular/no exercise, Bad habits when
reduced levels of activity, and thesitting or standing, Carrying excess loads,
popularity of passive entertainment systems(School/shopping) Underweight/Overweight
such as play stations that encourage further(Inadequate  diet)
inactivity and prolonged sitting posture in
the  adolescent  age  group.Mental  Attitude  towards  oneself.
Terry O'Brien of Back Trouble UK says "WhileBiomechanics is our way of describing how
80 percent of the population are likely toeach bit of your body moves in relation to
experience low back pain at some stage inanother  bit.
their life, there is a worrying trend in the
amount of back pain experienced by teenagers.Our bodies are fantastic at compensating when
things are not quite perfect but
It is well founded that having another familyunfortunately when we run out of
member with a history of back pain means youcompensations we usually end up with pain and
are more likely to develop back pain as anstiffness.
adolescent. As does poor family functioning
and  increased  life  stress.Let's have a look at some of the more common
biomechanical  problems:
Higher levels of stress, anxiety and
depression are also associated withProblem  1.
adolescent  back  pain.
It's the fashion not to tie trainers and
Back pain is commonly provoked by sportingshoes up but this prevents the shoe from
activity and static postures such as sitting.supporting the inside of the foot and allows
It is also known that specific sportingthe foot to roll or 'pronate' too much in
groups such as rowers are at higher risk ofstanding  and  walking.
back  pain.
This means the knee and the hip rolls inwards
Children seem to fall into two broad groups,too much which makes the inside calf and
those doing very little activity and thoseinside thigh muscle shorter. The iliotibial
doing too much. Both groups are prone to backband can then rub against the outside knee
pain.However it is the worrying trend ofgiving  pain.
inactivity amongst adolescents that is the
greatest cause for concern. Fuelled by theFurther up, the bottom muscles become too
dramatic increase in computer games andlong and stop working as they should do which
multi-media  consoles."puts added stress on the pelvis and low back
joints. Before you know it you have back
Let  us  now  look  at  Bio-Mechanics.pain, knee pain and ankle pain! And all
because  of  fashion!
Bio-mechanics and its association to Back
Pain.Problem  2.
When our body is in the standing position itWhether you drive 5 miles or 500 miles a day
is in a state of unsteady equilibrium becauseyour car seat is really important. In many
the base is small and the centre of gravitycars the base of the seat slopes backwards.
is a long way above it. That is why it has toIn fact some of the more expensive cars are
be balanced by keeping the centre of gravitythe worst because they want you to feel
over the base, otherwise the body would fall'snug' and safe in the seat. However, this
over.position forces your pelvis to sit too far
backwards.
Equilibrium: The steadiness of the body
depends on the size of its base and theOnce this happens your low back and upper
distance of the centre of gravity from thatback flex forward too much but then your neck
base. An object having a large base and a lowmuscles have to work really hard to stop your
centre  of  gravity  is  not  easily  upset.head from flexing too much and allow you to
see where you are going. This position then
The first thing necessary in order toforces your shoulder blades to stretch too
accomplish good posture is to straighten thefar forwards and a large stress is placed on
neck, keep the chin down and back. The secondboth  the front and the back of the shoulder.
important  thing  is  correct deep breathing.
The result is neck pain and /or upper or low
The line of gravity in the fundamentalback pain. This position can exacerbate
standing position falls in front of the ears,sciatica as it is a big stretch for the
and in front of the cervical and dorsalnerves.
vertebrae, through the lumbar vertebrae,
through the hip joint, and slightly in frontThe solution is to raise the back of the seat
of the ankle joint. But this probably variesso it becomes more horizontal. Some cars
in individuals according to their build andallow you to alter this angle but if yours
height.does not then sit on a small cushion or buy a
special wedge shape cushion that fits into
"Biomechanics is that branch of sciencethe seat.



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