Table 2.

Mean (SD) of the minimum margin of safety (MMOS) and displacement rate outcomes for centre-of-mass (COM) and centre-of-pressure (COP) across floor conditions for the backwards floor translation task.

Parameter	Floor condition
	Rigid	SmartCell	SofTile	Firm-Foam	Soft-Foam
Margin of safety (m)
MMOSCOM	0.058 (0.013)	0.062 (0.010)	0.051 (0.013)	0.027 (0.013)	0.044 (0.010)
MMOSCOP	0.026 (0.008)	0.030 (0.007)	0.021 (0.012)	0.017 (0.014)	0.019 (0.011)
Relative rates (m/s)
COM0–20%	0.185 (0.014)	0.182 (0.014)	0.195 (0.014)	0.193 (0.041)	0.189 (0.022)
COM20–40%	0.267 (0.047)	0.279 (0.037)	0.270 (0.040)	0.199 (0.070)	0.242 (0.049)
COM40–60%	0.116 (0.036)	0.132 (0.060)	0.113 (0.043)	0.076 (0.030)	0.077 (0.021)
COM60–80%	0.096 (0.015)	0.091 (0.018)	0.096 (0.020)	0.067 (0.025)	0.078 (0.019)
COM80–100%	0.048 (0.010)	0.046 (0.012)	0.044 (0.008)	0.034 (0.006)	0.041 (0.019)
COP0–20%	0.217 (0.030)	0.237 (0.026)	0.291 (0.038)	0.238 (0.053)	0.273 (0.021)
COP20–40%	0.541 (0.073)	0.542 (0.074)	0.560 (0.089)	0.457 (0.099)	0.538 (0.086)
COP40–60%	0.566 (0.091)	0.546 (0.090)	0.495 (0.072)	0.288 (0.061)	0.309 (0.109)
COP60–80%	0.471 (0.097)	0.464 (0.100)	0.401 (0.087)	0.306 (0.054)	0.319 (0.177)
COP80–100%	0.134 (0.066)	0.154 (0.067)	0.145 (0.066)	0.102(0.056)	0.182 (0.115)
Absolute rates (m/s)
COM0–2 cm	0.220 (0.007)	0.220 (0.006)	0.226 (0.009)	0.222 (0.019)	0.223 (0.008)
COM2–4 cm	0.104 (0.012)	0.100 (0.015)	0.112 (0.014)	0.090 (0.012)	0.084 (0.015)
COP0–2 cm	0.213 (0.032)	0.227 (0.026)	0.268 (0.034)	0.241 (0.028)	0.266 (0.029)
COP2–4 cm	0.525 (0.061)	0.538 (0.074)	0.571 (0.088)	0.460 (0.071)	0.608 (0.154)
COP4–6 cm	0.567 (0.092)	0.553 (0.085)	0.499 (0.056)	0.304 (0.064)	0.330 (0.119)
COP6–8 cm	0.481 (0.136)	0.490 (0.102)	0.462 (0.093)	0.301 (0.039)	0.251 (0.087)