Table 1.
Demographic data and mobile phone usage.
Figure 1.
Definition of segmental movements.
Table 2.
Basic gait parameters.
Figure 2.
Lateral deviations while walking.
The left hand side depicts the absolute medial-lateral deviations from the straight line. The right hand side depicts the absolute change in lateral foot position from one stride to the next of the right foot. The absolute change in lateral foot position per stride was greater during reading and texting than walking, but did not differ between the two phone tasks.
Figure 3.
Example of rotation motion of pelvis, thorax and head, and the relative rotation motion between thorax and head (neck) and pelvis and thorax (trunk) and phase angle between thorax-head and pelvis-thorax rotations when a participant walked without a phone (Control), read on a mobile phone (Reading) and texted on a mobile phone (Texting).
Note the increase in range of head rotation in relation to the global reference frame during reading and texting with reduction of phase angle and phase variability between thorax and head. The dashed vertical grey lines denote right heel strikes.
Table 3.
Segment angular range of motion (°).
Table 4.
Phase angle (°).
Table 5.
Additional treadmill experiment data.