TABLE.

Linear mixed effects models defining the extent to which kinematic measures including step rate condition can be used to estimate kinetics, with final models created using backward variable selection.

	Adjusted R2	Parameters	P-value
Peak Knee Extensor Moment	0.43
Intercept		0.39	0.440
−10% Condition		−0.29	0.037
+10% Condition		0.16	0.176
Foot Inclination Angle at IC		0.02	0.003
Heel to COM Distance at IC		6.82	0.001
COM Vertical Excursion		16.88	0.002
Knee Sagittal Plane Energy Absorption	0.58
Intercept		−0.03	0.902
−10% Condition		−0.14	<.0001
+10% Condition		0.04	0.212
Foot Inclination Angle at IC		−0.03	<.0001
Peak Knee Flexion Angle		−0.01	0.044
Peak Patellofemoral Force	0.55
Intercept		−4.38	0.328
−10% Condition		3.76	<0.001
+10% Condition		3.10	<0.001
Peak Knee Flexion Angle		1.32	<0.001
Peak Vertical Ground Reaction Force	0.48
Intercept		12.62	<0.001
−10% Condition		−0.19	0.824
+10% Condition		−0.54	0.515
Foot Inclination Angle at IC		−0.05	<0.001
COM Vertical Excursion		132.00	<0.001
−10% Condition: COM Vertical Excursion		−16.30	0.076
+10% Condition: COM Vertical Excursion		18.91	0.079
Braking Impulse	0.50
Intercept		0.07	0.003
−10% Condition		0.03	0.082
+10% Condition		−0.02	0.174
Foot Inclination Angle at IC		−0.001	0.021
Heel to COM Distance at IC		0.47	<0.001
COM Vertical Excursion		0.87	0.001
−10% Condition: Heel to COM Distance at IC		−0.31	0.102
+10% Condition: Heel to COM Distance at IC		0.34	0.136
Loading Rate	0.04
Intercept		553.04	<0.001
−10% Condition		56.28	0.018
−10% Condition		−42.44	0.074

Abbreviations: COM, center of mass; IC, initial contact