Table 2

Independent association of sleep parameters and MVPA with body composition indices

Variables	BFP			FFM			Muscle mass			BMI
Variables	β	P value	R²	β	P value	R²	β	P value	R²	β	P value	R²
Sleep duration
Model 1	−0.013	<0.001	0.034	0.011	<0.001	0.021	0.013	<0.001	0.032	−0.006	<0.001	0.044
Model 2	−0.013	<0.001	0.040	0.010	<0.001	0.025	0.012	<0.001	0.041	−0.005	<0.001	0.051
Model 3	−0.013	<0.001	0.053	0.011	<0.001	0.029	0.012	<0.001	0.047	−0.006	<0.001	0.055
Sleep efficiency
Model 1	−0.350	0.004	0.012	0.256	0.039	0.006	0.302	0.012	0.009	−0.121	0.007	0.011
Model 2	−0.359	0.003	0.020	0.271	0.029	0.012	0.307	0.010	0.020	−0.114	0.012	0.017
Model 3	−0.311	0.011	0.028	0.245	0.050	0.014	0.277	0.022	0.024	−0.105	0.022	0.019
WASO
Model 1	0.040	0.160	0.003	−0.044	0.129	0.003	−0.017	0.543	0.001	0.010	0.349	0.001
Model 2	0.043	0.134	0.010	−0.047	0.106	0.008	−0.019	0.499	0.011	0.009	0.422	0.008
Model 3	0.031	0.285	0.021	−0.041	0.167	0.011	−0.011	0.705	0.016	0.006	0.571	0.011
Number of awakenings
Model 1	0.180	0.034	0.007	−0.164	0.059	0.005	−0.139	0.098	0.004	0.051	0.109	0.004
Model 2	0.185	0.030	0.014	−0.171	0.049	0.010	−0.138	0.099	0.015	0.047	0.139	0.010
Model 3	0.156	0.068	0.024	−0.155	0.076	0.013	−0.119	0.157	0.019	0.041	0.196	0.013
Number of sleep periods
Model 1	0.479	0.002	0.015	−0.453	0.003	0.013	−0.517	0.001	0.018	0.161	0.004	0.012
Model 2	0.463	0.002	0.021	−0.440	0.004	0.017	−0.501	0.001	0.027	0.167	0.003	0.020
Model 3	0.425	0.005	0.031	−0.419	0.007	0.019	−0.477	0.001	0.031	0.160	0.004	0.023
MVPA
Model 1	−0.024	0.003	0.013	0.015	0.073	0.005	0.015	0.052	0.006	−0.004	0.233	0.002
Model 2	−0.023	0.004	0.019	0.013	0.107	0.008	0.015	0.054	0.016	−0.005	0.122	0.011
Model 4	−0.024	0.003	0.053	0.014	0.089	0.029	0.000	<0.001	0.059	−0.005	0.091	0.055

Model 1: unadjusted model; model 2: adjusted for age and gender; model 3: adjusted for age, gender and MVPA, model 4: adjusted for age, gender and sleep duration.
Significant associations are highlighted in bold.
BFP, body fat percentage; BMI, body mass index; FFM, fat-free mass; MVPA, moderate to vigorous physical activity; WASO, wake after sleep onset.