Table 4.

Bivariate analyses of physical activity and body composition traits: subset of adults from the Southwest Ohio Family Study whose visits occurred between January 2003 and November 2006

	Sport PA						Leisure PA
	ρG	SE	ρC	SE	ρE	SE	ρG	SE	ρC	SE	ρE	SE
Weight† (kg)	−0.17	0.21	–§		−0.10	0.11	−0.11	0.24	[0]||		−0.06	0.13
Height (cm)	0.14	0.17	[0]||		0.07	0.27	0.27	0.20	−0.48	0.40	−0.17	0.35
BMI† (kg/m2)	−0.29	0.22	–§		−0.10	0.10	−0.23	0.25	[0]||		−0.02	0.13
BFM (kg)	−0.28	0.23	–§		−0.16	0.10	−0.40	0.29	[0]||		−0.01	0.11
%BF‡	−0.46*	0.20	–§		−0.18	0.10	−0.66*¶	0.32	[0]||		0.02	0.11
TFM (kg)	−0.36	0.22	–§		−0.13	0.10	−0.38	0.28	[0]||		−0.04	0.12
VAT† (kg)	−0.46*	0.20	–§		−0.04	0.10	−0.23	0.25	[0]||		−0.16	0.11
SAT† (kg)	−0.38	0.19	–§		−0.12	0.11	−0.33	0.23	[0]||		−0.04	0.12
BFMI† (kg/m2)	−0.39	0.22	–§		−0.12	0.10	−0.49	0.29	[0]||		0.01	0.11
TFMI† (kg/m2)	−0.42*	0.20	–§		−0.09	0.10	−0.38	0.27	[0]||		−0.02	0.12
VFI† (kg/m2)	−0.47*	0.20	–§		−0.04	0.10	−0.26	0.25	[0]||		−0.14	0.12
SFI† (kg/m2)	−0.40*	0.19	–§		−0.12	0.11	−0.41	0.24	[0]||		−0.03	0.12

PA, physical activity; ρ_G, genetic correlation; ρ_C, household correlation; ρ_E, random environmental residual correlation; BFM, total body fat mass; %BF, percentage body fat; TFM, trunk fat mass; VAT, visceral adipose tissue; SAT, subcutaneous abdominal adipose tissue; BFMI, fat mass index; TFMI, trunk mass index; VFI, visceral fat index; SFI, subcutaneous fat index.

^*Significantly different from 0, i.e. shared genetic, household or environmental effects (P<0.05).

^†Variables were log-transformed.

^‡Variables were square-root-transformed.

^§No household terms were modelled because neither trait had a significant c² (i.e. both c² terms and ρ_C were fixed to zero).

^||Fixed at zero because one trait did not have significant household effects (c²).

^¶Significantly different from 0 and not significantly different from 1 (P<0.05).