The Comparison of the Effect of Prolonged Sitting on Lumbar Repositioning Error in Asymptomatic and Chronic Low Back Pain Participants with Seated Sedentary Behavior

Abstract

Lumbar Repositioning Error (LRPE) refers to an individual’s capacity to perceive and control the precise position of their lumbar spine. An adequate lumbar repositioning is crucial for sustaining spinal stability and an optimal function during sitting activities. When lumbar repositioning is inaccurate, it can lead to ineffective movement patterns that might contribute to the development of low back pain (LBP). However, the impact of prolonged sitting on LRPE in asymptomatic individuals and those with chronic low back pain (CLBP) remains unexplored. To assess the effects of continuous 30 min sitting on LRPE and pain in asymptomatic and CLBP participants with sedentary behavior, 50 participants (25 asymptomatic and 25 CLBP) were recruited. Their LRPE and pain were measured before and after a 30 min sitting condition. Both groups experienced a significant increase in pain intensity after the 30 min sitting period (p = 0.001 for asymptomatic, p = 0.006 for CLBP). The LRPE remained unchanged in the asymptomatic group (p = 0.066), but it was significantly increased in the CLBP group (p = 0.001). Furthermore, the CLBP group exhibited significantly higher levels of LRPE and pain compared to the asymptomatic group after sitting (p = 0.041 and p = 0.001, respectively). Prolonged sitting posture is a risk of LBP, particularly in sedentary individuals. To prevent the exacerbation of LRPE and LBP, individuals with CLBP, especially those with sedentary lifestyles, should avoid sitting continuously for 30 min. These findings highlight the importance of physical therapists providing such guidance in practice.