. Author manuscript; available in PMC: 2017 Jun 29.

Published in final edited form as: J Am Geriatr Soc. 2016 Jan;64(1):144–150. doi: 10.1111/jgs.13871

Table 2.

a & b.Associations Between Strength Measures and Gait Speed: Ordinary Least Squares Regression (unadjusted) a) AGES-REYKJAVIK study; b) Health ABC study.

a.
AGES-REYKJAVIK	Standardized regression coefficients			Adjusted^** Standardized regression coefficients
Men(N=2,082)	Model 1	Model 2	Model 3	Adjusted Model 1	Adjusted Model 2	Adjusted Model 3
Grip (kg)	0.389^*		0.251^*	0.273^*		0.162^*
Isometric leg extension (N-m)		0.384^*	0.240^*		0.311^*	0.234^*
R²^***	0.151	0.148	0.190	0.061	0.078	0.094
Women (N=2,771)
Grip (kg)	0.399^*		0.256^*	0.276^*		0.181^*
Isometric leg extension (N-m)		0.408^*	0.276^*		0.299^*	0.223^*
R²	0.159	0.167	0.215	0.064	0.076	0.098

b.
Health ABC (Y6)	Standardized regression coefficients			Adjusted^** Standardized regression coefficients
Men (N=919)	Model 1	Model 2	Model 3	Adjusted Model 1	Adjusted Model 2	Adjusted Model 3
Grip (kg)	0.214^*		0.125^*	0.193^*		0.106
Isokinetic leg extension (N-m)		0.272^*	0.222^*		0.282^*	0.244^*
R²^*^	0.046	0.074	0.087	0.035	0.073	0.082
Women (N=994)
Grip (kg)	0.120^*		0.043	0.147^*		0.065
Isokinetic leg extension (N-m)		0.193^*	0.174^*		0.241^*	0.214^*
R²	0.014	0.037	0.039	0.020	0.051	0.054

p<0.001

^**

Adjusted for age and BMI. Standardization based on multiplying the regression coefficient by the standard deviation of its corresponding predictor and dividing by the standard deviation of gait speed.

^***

Partial R² for adjusted model (i.e., R² for grip and/or leg strength, conditioned on age and BMI being in the model)

p<0.001

^**

Partial R² for adjusted model (i.e., R² for grip and/or leg strength, conditioned on age and BMI)

Model 1 tested grip strength alone, model 2 tested leg strength alone and model 3 tested both measures simultaneously. Standardized coefficients indicate gait speed increases for every one standard deviation increase in grip or leg extension strength. * indicates p<0.001