Comparison of temporal changes in trunk flexion angle and gluteal pressure during continuous sitting

[Purpose] This study investigated temporal changes in trunk flexion angle and gluteal pressure during computer work with continuous sitting. [Subjects and Methods] This study involved 10 males subjects aged 21–29 years. During 30 min of data collection with a Tekscan system and a video camera, peak gluteal pressure and changes in trunk flexion angle were analyzed with the COMFOM at research 6.20 and Pro-Trainer 10.1 programs, respectively, at 10, 20, and 30 min. [Results] The result showed no significant change in gluteal pressure after 10, 20, or 30 min. However, changes in trunk flexion angle increased significantly after 10 min <20 min <30 min. [Conclusion] Trunk flexion is necessary for repositioning, unless one can maintain a posture for a long time without movement. Future research should analyze repositioning methods according to individual characteristics.