Table 2. Parameters of the receiver operating curves (ROC) for velocity and heel strike angles (cf. Fig. 1).

Parameter	AUC	Cut-off point	Sensitivity	Specificity
Velocity [m/s]	0.686	0.83	0.85	0.56
Left heel strike angle [°]	0.722	15.8	0.79	0.63
Right heel strike angle [°]	0.691	16.5	0.68	0.69

AUC: area under the curve.