Association of objectively measured physical activity with body components in European adolescents

BMC Public Health

Table 2 Linear regression models of physical activity (PA) with indices of fat mass and height (Model I)

Height				BMI			Skinfold thickness^a			% Fat mass^a,b				Waist circumference^a
Males	β	R ²	P	β	R ²	P	β	R ²	P		β	R ²	P	β	R ²	P
Light PA^a	-0.200	0.423	<0.001	0.047	0.059	0.178	0.082	0.071	<0.05	0.053	0.079		0.128	0.007	0.097	0.832
Moderate PA^a	-0.106	0.401	<0.001	-0.018	0.058	0.581	-0.040	0.067	0.229	-0.046	0.079		0.159	-0.049	0.099	0.130
Vigorous PA^a	0.056	0.394	<0.05	-0.204	0.098	<0.001	-0.258	0.130	<0.001	-0.259	0.142		<0.001	-0.175	0.126	<0.001
MVPA^a	-0.035	0.391	0.348	-0.112	0.069	0.001	-0.161	0.091	<0.001	-0.165	0.103		<0.001	-0.114	0.109	<0.001
Average PA^a	-0.012	0.391	0.640	-0.095	0.066	<0.01	-0.149	0.087	<0.001	-0.155	0.100		<0.001	-0.097	0.106	<0.01
Females
Light PA^a	-0.119	0.148	<0.001	0.095	0.141	0.001	0.009	0.197	0.746	0.021	0.180		0.469	0.062	0.147	0.033
Moderate PA^a	-0.049	0.137	0.094	0.008	0.133	0.794	-0.039	0.199	0.171	-0.036	0.180		0.205	-0.031	0.145	0.290
Vigorous PA^a	0.052	0.147	0.074	-0.142	0.151	<0.001	-0.178	0.227	<0.001	-0.176	0.208		<0.001	-0.146	0.164	<0.001
MVPA^a	-0.011	0.135	0.703	-0.064	0.136	<0.05	-0.115	0.209	<0.001	-0.110	0.19		<0.001	-0.092	0.151	<0.01
Average PA^a	0.003	0.135	0.929	-0.043	0.134	0.153	-0.100	0.206	<0.001	0.095	0.187		0.001	-0.070	0.148	<0.05

β, standardized regression coefficients; R ², coefficients of determination. ^aLog-transformed data.
Analyses were adjusted for model I (pubertal status, family affluence scale and country). BMI indicates body mass index, MVPA indicates moderate and vigorous PA.
^b% fat mass derived from Slaughter equation [26].

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