. 2014 Oct 4;36(5):9714. doi: 10.1007/s11357-014-9714-4

Table 2.

Association between the quadriceps strength and the handgrip strength

Per unit^a change in	Outcome	Crude			Adjusted for age and sex
Per unit^a change in	Outcome	R ²	β (95 % CI)	P value	R ²	β (95 % CI)	P value
Handgrip strength	Quadriceps strength	0.16	0.44	<0.001	0.17	0.42	<0.001
	(Dominant side)		(0.37; 0.52)			(0.33; 0.50)
Quadriceps strength	Quadriceps strength	0.75	0.87	<0.001	0.75	0.87	<0.001
(Dominant side)	(Nondominant side)		(0.83; 0.91)			(0.83; 0.90)

^aHandgrip and quadriceps strength measurements were normalized by square root transformation and standardized into Z scores