Stand in front of a full-length mirror and turn to your side, to reveal your profile.
Ideally, you should see your shoulders, hips, knees and ankles aligned.
If these four points do not form a straight or almost straight line, chances are you will develop lower back pain in the upcoming months or years. And you are not alone.
Springtime
The spine works as a spring, absorbing pressure and shocks as you walk or remain seated. However, when the spine bends beyond its ideal posture, this natural spring effect diminishes or works against its intended job.
For instance, some people have a tendency to lean the torso forward, causing strain in the neck. When your shoulders, hips and knees misalign, your face looks slightly downwards. Thus, to level the sight, you need to lift the nose, compressing the back of your neck. Meanwhile, to recover balance, your hips have to move backwards; conversely, if you keep your feet in the same place, the knees move to the front for the same reason. The result is a profile somewhat similar to an S shape.
In America, where people can hardly do without a car, more than half the population suffer from pain. Of these unfortunate souls, 25% reported pain in the back. Pain in the knees and headaches follow (12% and 9%, respectively). Male drivers aged between 30 and 49 have double the risk of back injuries and chronic pain. Why? Because they are getting older, yet remain active.
Since most of the time you remain seated, an ergonomic seat would suffice to prevent injuries and bad posture; but, unfortunately, most seats are poorly designed:
• Most seats in cars, planes and long distance busses cause the reverse spring effect. Badly designed or badly positioned seats force torsos to lean backwards. If you do not have a back support yet, place the back of your seat as near to the plumb line as possible. An upright seat may not feel too comfortable at first, but it surely provides a healthier support.
• Tall people often have to seat with their knees way higher than their hips, which is exactly the opposite of a good seating posture. Whenever possible, keep your knees below the level of the thighs. To do so, put something between the seat and your thighs or, better yet, set the seat higher.
However, more often than not, the problem lies with bad posture. Sometimes, an ergonomic design is not used in the right way:
• Inexpert drivers face a common seat-related problem. As they release the clutch pedal with the left foot, they show a tendency to shift the center of mass to the other thigh. Just as your shoulders, hips, knees and ankles should ideally align together, the line connecting shoulders should remain as parallel to the hips as possible for an ergonomically correct posture. When these lines are not parallel, the vertebras in the spine suffer unnecessary compression.
Take the time to watch yourself in a full-length mirror. For your back’s sake, remember these tips on ergonomics and get yourself the proper car seat support.
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