Figures & data
Figure 1. Test seat with power recline showing user-adjustable headrest with the seat back angle set to the 53° condition.
Figure 2. Landmarks, joints, and posture variables. Angles are positive as shown except for neck angle.
Figure 3. Dependent measures for lap belt fit. The upper/rearward edge of the lap portion of the belt is measured at the lateral position of the right and left the predicted ASIS location. The fore–aft (X) coordinate is positive rearward of the ASIS and the vertical coordinate is positive above the ASIS landmark.
Figure 4. Illustration of mean torso posture with headrest use across seat back angles.
Figure 5. Distribution of lap belt locations relative to estimated bone ASIS on the right side of the pelvis. Condition means and standard deviations are shown. Data from smaller back angles are shown with smaller symbols. For reference, the belt webbing width is 45 mm.
Figure 6. Torso belt score as a function of seat back angle. Higher scores are more outboard. A score of zero indicates that the inner edge of the belt lies on the body centerline at the height of the clavicle (suprasternale landmark).
