Table 3.

Mediating effects of physical activity and diet.

Mediator	Physical activity	Diet
Obesity phenotype: BMI ≥ 30 only vs healthy non-obese
Total effect	1.12 (1.00,1.26)	1.15 (1.04,1.27)
Natural direct effect	1.12 (1.00,1.26)	1.15 (1.04,1.27)
Natural indirect effect	1.00 (1.00,1.01)	1.00 (1.00,1.00)
Proportion mediated	2.49 % (0.24 %,17.49 %)	1.60 % (0.34 %,5.55 %)
Obesity phenotype: metabolically unhealthy obesity vs healthy non-obese
Total effect	1.52 (1.46,1.60)	1.57 (1.49,1.64)
Natural direct effect	1.49 (1.42,1.56)	1.56 (1.48,1.63)
Natural indirect effect	1.02 (1.02,1.03)	1.01 (1.00,1.01)
Proportion mediated	7.08 % (4.87 %,9.43 %)	1.86 % (0.91 %,2.74 %)
Obesity phenotype: central obesity vs healthy non-obese
Total effect	1.60 (1.49,1.71)	1.61 (1.51,1.70)
Natural direct effect	1.57 (1.46,1.68)	1.60 (1.50,1.69)
Natural indirect effect	1.02 (1.01,1.03)	1.01 (1.00,1.01)
Proportion mediated	5.29 % (3.52 %,7.34 %)	1.47 % (0.58 %,2.50 %)
Obesity phenotype: sarcopenic obesity vs healthy non-obese
Total effect	1.53 (1.09,2.12)	1.74 (1.32,2.30)
Natural direct effect	1.50 (1.07,2.08)	1.73 (1.31,2.28)
Natural indirect effect	1.02 (1.01,1.04)	1.01 (1.00,1.01)
Proportion mediated	6.22 % (2.67 %,17.05 %)	1.25 % (0.41 %,3.10 %)

Note.

Covariates: sex, age, race, education qualifications, smoking status, drinking status, family history of depression, diabetes, and hypertension.