Table 4.

Average Velocity and Peak Resultant Force Effects Sizes for Weight and Axle Position on Each Surface

	Average Velocity
	Tile	Low Capet	High Carpet	Ramp
Weight	0.04m/s	0.03m/s	0.03m/s	0.04m/s
	3.74%	3.37%	6.38%	10.81%
	0.18	0.05	0.21	0.26
Axle	0.04 m/s	0.01ms	0.00m/s	0.03m/s
	3.88%	1.14%	-	9.09%
	0.18	0.05	-	0.24
	Resultant Force
Weight	0.42%BW	0.40%BW	0.39%BW	0.50%BW
	4.61%	3.93%	2.68%	3.05%
	0.18	0.15	0.17	0.16
Axle	0.20 %BW	0.34%BW	1.34%BW	0.92%BW
	2.17%	3.33%	9.54%	5.69%
	0.08	0.13	0.58	0.36

Data presented in descending order are absolute difference (m/s or %BW), relative difference (% change), and Cohen's d for each effect. Absolute difference = Absolute value(un-weighted mean – weighted mean)or Absolute value(anterior mean – posterior mean). Relative difference = absolute difference/(un-weighted mean or anterior) * 100. Cohen d = absolute difference/(pooled standard deviation of both weights or axle position).

Abbreviation: BW, body weight.