Combination ergonomic task chair and exercise device

摘要: Apparatus for both supporting an occupant as a task chair and exercising the lumbar extensors. The has two configurations. One configuration is chair. A second exercise device in which arm rests move to restrain anterior pelvic region support becomes posterior restraint. seatback moves through range of motion with strength curve ratio about 1.4:1 between flexion extension. resistance mechanism that includes four-bar linkage connected selectable group coil springs. monitor detectors communicate feedback system, indicates if performing correctly. system displays screen showing angular position comparison ideal exercise.