Table 1.

Mean correlation coefficients for all subjects

	All muscles	RF	BF	TA	GM	AN	KN	Foot clearance
Run 1	−0.37	−0.48	−0.44	−0.32	−0.24	−0.13	−0.64	−0.30
Run 2	−0.18	−0.28	−0.06	−0.16	−0.21	0.02	−0.10	0.00
Run 3	−0.21	−0.27	−0.18	−0.29	−0.11	−0.06	−0.32	−0.03

Mean correlation coefficients between the number of steps over the obstacle and root mean square of all muscles and separately for the rectus femoris (RF), biceps femoris (BF), tibialis anterior (TA) and gastrocnemius medialis (GM) muscles, the amplitudes of ankle (AN) and knee (KN) joint trajectories and the foot clearance over the obstacle for the three runs.