Which postural deviation can result from prolonged sitting?

Prolonged sitting is commonly associated with an anterior pelvic tilt due to the muscular changes that occur when individuals spend extended periods in a seated position. When sitting, especially in chairs that do not provide adequate lumbar support, the hip flexors can become shortened and tight, promoting this forward tilt of the pelvis. As the pelvis tilts anteriorly, it can also lead to an increased curvature in the lumbar spine, causing an exaggerated lordosis.

This postural change can be problematic, as it may lead to discomfort, pain, and further imbalances in the body. In contrast, the other options represent different postural outcomes that are not typically associated with prolonged sitting. Improved lumbar curvature or neutral spine alignment are often not maintained during extended periods of sitting, while an elevated shoulder position relates more to poor ergonomics or muscular imbalances rather than the direct effect of sitting itself. Thus, the anterior pelvic tilt is a critical consideration when examining the impacts of sedentary behavior on posture.