Poor sitting posture also shortens the hip flexors, such as the psoas (that’s pronounced “so as,” with an emphasis on the so, as in my hips are soooo tight). A tight psoas inhibits the glutes, which allows for more pressure on the lower spine. When you do move away from your computer screen, a tight psoas will inhibit the stability of the pelvis and lower spine, so twisting to grab a piece of paper from the edge of your desk may leave you in “sudden” low back pain.
Read MoreIn Sesame Street terms, “C is for chronic (back pain) or compression (of the spine). I know that’s not catchy, but poor posture may contribute to low back pain, in part because of the disc compression in the spine. Another factor is the weakening of our best friend, the gluteus maximus and a shortening of the hamstrings. In short, if you sit on your butt all day, it will be inactive and weak. The hamstrings shorten after long periods of time in a seated position and have to over-compensate for weak glutes (they extend the hips), which adds to their tightness. Some studies suggest tight hamstrings contribute to 80 percent of all low back pain.
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