Neutral body posture

In the 1980s, NASA developed the Man-System Integration Standards (MSIS), a set of guidelines based on anthropometry and biomechanics, which included a definition of an average typical NBP created from measurements of crew members in the microgravity environment onboard Skylab.

[3] Later work by NASA based on research aboard Space Shuttle mission STS-57 found greater individual variations between crew members' neutral body positions than originally suggested by the earlier Skylab study.

[4] No single crew member exhibited the typical NBP called out in the MSIS standard.

[5] NASA standards for the neutral body position have informed seat design for commercial vehicle manufacturers.

In 2005, engineers and scientists at Nissan Motor Company used NBP research in the development of driver's seats in their new vehicles.

An averaged neutral body position as defined in MSIS
Neutral body postures for six crew members from Space Shuttle mission STS-57