Evaluation of differences between two groups of low back pain patients with and without rotational demand activities based on hip and lumbopelvic movement patterns.

Background: Excessive and earlier lumbopelvic motions during trunk and limb movements tests have been reported in both low back pain (LBP) patients with and without trunk and hip rotational demand activities. The aim of the present study was to determine differences in hip and lumbopelvic rotation during the active hip internal rotation (AHIR) test between two groups of LBP patients with and without regular trunk and hip rotational demand activities.

Material And Methods: A total of 35 LBP patients, including 15 males who regularly participated in rotational demand sports activities and 20 males not participating in sports and functional rotational demand activities, participated in study. The AHIR test was performed. The kinematic variables of hip and pelvic rotations were recorded by a Qualisys motion analysis system. Pelvic and hip rotations were calculated across time during the test. In addition, pelvic rotations in the first half of the test and pelvic-hip timing were calculated.

Results: People with rotational demand activities had a higher pelvic rotation both during the test and in the first 50% of movement. Earlier pelvic rotation was observed in people with rotational demand activities compared to people with non-rotational demand activities.

Conclusion: 1. The data of the current study suggests that lumbopelvic movement patterns in different groups of LBP patients in regard to their specific activities may vary. 2. LBP people with rotational demand sports activities have a greater tendency of pelvic rotation motion during the AHIR.