Table 2.

Odds ratio of the ACTN3 genotype in four groups classified by bone mass and muscle mass.

	Normal Group vs
Independent Variable	Bone Mass Loss Group OR (95% CI)	Muscle Mass Loss Group OR (95% CI)	Combined Bone and Muscle Mass Loss Group OR (95% CI)
RR	reference	reference	reference
RX	0.75 (0.35–1.60)	1.03 (0.37–2.88)	1.62 (0.66–3.98)
XX	1.14 (0.45–2.89)	2.30 (0.73–7.30)	3.00 (1.05–8.54) *

Covariates: age, sex, grip strength, medications. OR, odds ratio; CI, confidence interval. * p = 0.039.