Name	Description
TET	Total Evacuation Time
BMI	Body Mass Index
PVINS	Passive Vision-aided Inertial System
TSW	Trunk Flexion Stoop Walking
TKSW	Trunk–Knee Flexion Stoop Walking
$H_P$	Body height of the person
${SL}_i$	Step length of i-th step
$v_h\left(i\right)$	Instantaneous velocities of i-th step in horizontal direction
$v_v\left(i\right)$	Instantaneous velocities of i-th step in vertical direction
$\overline{v_h}$	Average horizontal speed
$\overline{v_v}$	Average vertical speed
$n_j$, $n_k$	Number of steps in Stage $j$ or $k$