Table 2

Variable loading* matrix and explained variance related to each PC after varimax rotation

	PCs
	PC1	PC2	PC3	PC4	PC5
Body weight	0.896	−0.059	0.095	−0.049	−0.027
BMI	0.941	−0.047	0.082	0.045	0.063
Neck circumference	0.794	−0.089	0.077	−0.034	0.127
Waist circumference	0.922	−0.051	0.070	0.088	0.251
Hip circumference	0.869	−0.052	0.098	−0.105	−0.204
Waist-to-hip ratio	0.582	−0.027	0.017	0.243	0.590
Waist-to-height ratio	0.870	−0.040	0.053	0.154	0.306
Total body fat (%)	0.830	0.053	0.079	0.082	0.059
Total body fat (kg)	0.940	0.016	0.075	0.037	0.027
Visceral fat area	0.756	−0.053	0.091	0.069	−0.020
Fasting plasma glucose	0.026	−0.032	0.086	−0.094	0.825
Systolic blood pressure	0.153	−0.041	0.927	0.099	0.033
Diastolic blood pressure	0.155	−0.077	0.923	0.044	0.080
Heart rate	0.148	−0.434	0.131	0.456	0.063
RMSSD	−0.039	0.906	−0.051	−0.304	−0.010
HF	0.009	0.901	−0.038	−0.191	0.052
LF	−0.057	0.903	−0.010	0.207	−0.085
LF/HF	0.009	−0.134	0.071	0.898	−0.052
Proportion of explained variance (%)	40.21	14.95	10.02	7.36	7.08
Cumulative explained variance (%)	40.21	55.16	65.18	72.54	79.62

*Loading denotes the contribution of the variable to each PC. A higher absolute value indicates that the variable has a major influence on the PCs. Bold numbers indicate absolute loadings ≥0.45.
BMI, body mass index; HF, power in high-frequency range; LF, power in low-frequency range; LF/HF, ratio LF/HF; PC, principal component; RMSSD, root mean square of successive R-R interval differences.