Development of Dynamic Posture Keeping Training Device for Maintenance of Antigravity Muscles in a Microgravity Environment - Validation of Training Effects Based on a 2DOF Kinetic Model Considering Lumbar Flexion-. - Koki Tahara; Yusuke Shimoda; Ryunosuke Sawahashi; Rie Nishihama; Daisuke Masuda; Taro Nakamura 001 (SII, 2024)