Aching Back? Sitting Up Straight Could Be the Culprit

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    Figure 1. MR image: Movement of spinal disc material (NP) as seen from changing from the 135 degree trunk-thigh angle seating position to the forward leaning "lounge chair" seating position.
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    Figure 2. MR image: forward flexion (bent forward with elbows on thighs) sitting position
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    Figure 3. The 135 degree trunk-thigh angle sitting position as depicted by one of our study subjects seated on the special MRI seat in the Positional MRI Scanner.
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    Figure 4. MR image: upright sitting posture - water calibration tubes strapped to lower back. These are used to gather data for assessment of changes in spinal disc water content.

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