No this person is not constipated, it's a pilot in training in a centrifuge where the acceleration exceeds 9G. A normal person faints between 4 and 6G. The figure in the bottom left corner represents the number of G.
Written by Dignan
Human tolerances depend on the magnitude of g-force, the length of time it is applied, the direction it acts, the location of application, and the posture of the body.
The human body is flexible and deformable, particularly the softer tissues. A hard slap on the face may impose hundreds of g-s locally but not produce any real damage: a constant 15 g-s for a minute, however, may be deadly. When vibration is experienced, relatively low peak g levels can be severely damaging if they are at the resonant frequency of organs and connective tissues.
To some degree, g-tolerance can be trainable; and there is also considerable variation in innate ability between individuals. Further some illnesses reduce g-tolerance, particularly cardiovascular problems.