Table 1. Correlations (r values) between crossing variables and lower extremity muscle strength (n = 42).

Crossing Variables	Hip		Knee		Ankle
	flexors	extensors	flexors	extensors	dorsiflexors	plantarflexors
Crossing stride length
Leading leg	.282*	.397*	.418**	.202	.426**	.090
Trailing leg	.326*	.457**	.425**	.307*	.440**	.081
Crossing stride velocity
Leading leg	.365*	.486**	.496**	.337*	.543**	.146
Trailing leg	.398*	.523**	.509**	.409*	.543**	.164
Crossing step width
Leading leg	−.084	−.222	−.22 1	−.083	−.238	−.288
Trailing leg	−.059	−.093	−.159	−.044	−.226	−.038
Vertical toe-obstacle clearance
Leading leg	−.015	−.192	−.059	−.100	−.143	−.135
Trailing leg	−.110	−.085	−.010	−.151	−.133	−.124

P<0.05; **P<0.01.