Why does my lower back feel sore after sitting in an office chair for four hours?
1. Introduction Lower back soreness after prolonged sitting occurs because the seated posture forces the lumbar spine into sustained flexion, significantly increasing mechanical pressure on the intervertebral discs and overstretching the posterior ligaments. Simultaneously, the deep stabilizing muscles of the spine endure continuous isometric contraction, restricting local blood flow and leading to ischemic fatigue. This … Read more