Table 3A. Multivariable analyses of muscle mass and metabolite associations in men.

Male	Q1	Q4	P	Parameter Estimate (SE) Before Adjustment	Parameter Estimate (SE) After Adjustment	Multivariable -Stepwise
	(N=33)	(N=33)	(Q1 vs Q4)			P-value
Age, yrs	80.52±7.83	87.03±4.22	0.0374	0.1797 (0.0556)	0.2828 (0.0998)	0.0046
Glu, μM	55.59±25.93	45.27±13.77	0.049	-0.0259 (0.0136)	NA
Cit/Orn	0.30±0.08	0.39±0.12	0.0011	11.3751 (4.0146)	18.0713 (7.0956)	0.0109
DOPA, μM	0.15±0.06	0.18±0.05	0.0372	11.0399 (5.5216)	22.1837 (9.1725)	0.0156
alpha_AAA, μM	1.03±0.40	0.82±0.21	0.0087	-2.5589 (1.0321)	-3.1661 (1.4556)	0.0296