Table 1.

Description of CatWalk XT parameters used to analyse burn-induced gait abnormalities.

Paw pressure parameters
Mean intensity	The mean light intensity for an individual paw during an entire run expressed in arbitrary units (AU).
Mean intensity of the  15 most intense pixels	The mean intensity of the 15 pixels of a paw with the highest reflected light intensity during an entire run expressed in arbitrary units (AU).
Max intensity	The maximum light intensity for an individual paw during a run expressed in arbitrary units (AU).
Paw print area parameters
Print area	Representative of the average contact area of an individual paw with the glass plate during a run expressed in cm2.
Maximum contact area	The maximum surface area of the print the animal placed on the glass plate during a run expressed in cm2.
Dynamic paw parameters
Stand	The average duration of contact of an individual paw with the glass plate during a run expressed in seconds.
Swing	The average duration in seconds of no contact of a paw with the glass plate.
Duty cycle	Stand as a percentage of Step Cycle: Duty Cycle = Stand / (Stand + Swing) × 100%
Interlimb coordination
Regularity index	Percentage of normal step sequences calculated by the formula (NSSP × 4)/PP × 100%, where NSSP is the number of Normal Step Sequence Patterns and PP is the total number of Paw Placements.