. Author manuscript; available in PMC: 2011 Apr 1.

Published in final edited form as: Med Sci Sports Exerc. 2010 Apr;42(4):771–780. doi: 10.1249/MSS.0b013e3181bbeaa6

TABLE 5.

Relationships (R² and β coefficients) among AKL, GR, and GJL with pre- and postlanding muscle activation in females.

Dependent Variable	Multiple R²^a	P	Partial Correlations			Unstandardized Coefficients
Dependent Variable	Multiple R²^a	P	AKL	GR	GJL	Intercept	AKL	GR	GJL	QPTQ	HPTQ
Prelanding activation
Quadriceps	0.048	0.295	0.067	0.004	−0.200	0.416	0.003	0.000	−0.010	−0.051	−0.069
Hamstring	0.115	0.030^*	−0.187	0.349	−0.262	0.267	−0.012	0.015^*	−0.019^*	0.106^*	−0.144^*
Gastrocnemius	0.287	<0.001	0.089	0.355	−0.450	0.670	0.008	0.022^*	−0.051^*	−0.040	−0.061
Postlanding activation
Quadriceps	0.051	0.233	0.162	−0.119	−0.124	1.969	0.028	−0.013	−0.023	−0.254^*	−0.325^*
Hamstring	0.112	0.048^*	0.058	0.139	−0.300	0.917	0.011	0.017	−0.066^*	0.090	−0.358^*
Gastrocnemius	0.086	0.075^**	0.112	0.140	−0.220	1.938	0.027	0.021	−0.060^**	−0.135	−0.625^*

Represents the R² change (variance explained by laxity values) once thigh strength was entered and accounted for.

P < 0.05.

^**

P < 0.10.

AKL in millimeters, GR in degrees, and GJL as score.

HPTQ, hamstrings peak torque (N·m·kg⁻¹); QPTQ, quadriceps peak torque (N·m·kg⁻¹).