Before revision: Dr. A. C. Mandal's research from the 1960s to the 1990s concluded that a forward sloping seat did effectively tip the pelvis forward, opening up the angle between torso and thigh, and thereby correctly aligns the spine, indicating a more suitable position for long periods of sitting.Torsten Mandal 2009: "Better furniture types for work and studies reduces bending and pain".
After revision: A. C. Mandal's research from the 1960s to the 1990s concluded that a forward sloping seat did effectively tip the pelvis forward, opening up the angle between torso and thigh, and thereby correctly aligns the spine, indicating a more suitable position for long periods of sitting.Torsten Mandal 2009: "Better furniture types for work and studies reduces bending and pain".