The research suggests that people spending hours at the office or in school desks should avoid sitting up straight or leaning over the desk/office. The experts indicated that lying back at a 135 degree angle is the posture that puts less pressure on the spine.
The team led by Dr Waseem Bashir monitored nearly 22 healthy adults who hadn't had any problems related to back pains or surgeries. During the tests carried out at the Woodend Hospital in Scotland, participants were asked to sit straight, lean over a desk and lay back at an angle of 135 degrees. Experts used a professional medical technique to measure the pressure each posture poses on the spine.
"When pressure is put on the spine it becomes squashed and misaligned. A 135-degree body-thigh sitting posture was demonstrated to be the best biomechanical sitting position, as opposed to a 90-degree posture, which most people consider normal. Sitting in a sound anatomic position is essential, since the strain put on the spine and its associated muscles and ligaments over time can lead to pain, deformity and chronic illness," stated Dr Waseem Bashir, the leading author of the study and an orthopedic surgeon at the Glasgow Nuffield Hospital.
"We were not created to sit down for long hours, but somehow modern life requires the vast majority of the global population to work in a seated position, the best position for our backs is arguably lying down, but this is hardly practical," he added.
The findings of this new study were presented at the latest meeting of the Radiological Society of North America, which took place in Chicago.
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