The influence of aerobic fitness on obesity and its parent-offspring correlations in a cross-sectional study among German families

Table 3 Estimated heritability of age, sex and age*sex adjusted aerobic fitness residuals

	No adjustment			Adjusted for physical activity^†			Adjusted for BMI^#			Adjusted for PA^† and BMI^#			Adjusted for PA^†, BMI^# and BMI^#*PA^†
Design	N	β (SE)	h²	N	β (SE)	h²	N	β (SE)	h²	N	β (SE)	h²	N	β (SE)	h²
Mid-parent – offspring	131	0.42 (0.14)	0.42	118	0.40 (0.13)	0.40	131	0.31 (0.13)	0.31	118	0.33 (0.13)	0.33	118	0.33 (0.13)	0.33
Mid-parent – son	70	0.49 (0.21)	0.49	64	0.45 (0.19)	0.45	70	0.44 (0.21)	0.44	64	0.43 (0.21)	0.43	64	0.42 (0.21)	0.42
Mid-parent – daughter	61	0.32 (0.16)	0.32	54	0.28 (0.16)	0.28	61	0.14 (0.15)	0.14	54	0.13 (0.16)	0.13	54	0.13 (0.15)	0.13
Father – son	70	0.30 (0.12)	0.60	64	0.22 (0.12)	0.44	70	0.26 (0.13)	0.52	64	0.20 (0.12)	0.40	64	0.20 (0.13)	0.40
Father – daughter	61	0.22 (0.11)	0.44	54	0.13 (0.11)	0.26	61	0.08 (0.11)	0.16	54	0.04 (0.11)	0.08	54	0.03 (0.11)	0.06
Mother – son	70	0.09 (0.21)	0.18	64	0.24 (0.19)	0.48	70	0.12 (0.20)	0.24	64	0.26 (0.19)	0.52	64	0.23 (0.20)	0.46
Mother – daughter	61	0.14 (0.15)	0.28	54	0.21 (0.14)	0.42	61	0.08 (0.13)	0.16	54	0.13 (0.14)	0.26	54	0.15 (0.13)	0.30

^†Physical activity is included as two variables: average minutes per day spent in moderate or vigorous physical activity (MVPA) and average minutes of wearing time
^#Body mass index (BMI) categories according to WHO in adults (<18.5; 18.5- < 25; 25- < 30; 30+) and IOTF in children [29]

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