Seasonal differences in brown adipose tissue density and pulse rate variability in a thermoneutral environment

Table 3 Relationship between anthropometric parameters and heart rate variability components representative of the autonomic nervous system

	BMI	% Body fat	Fat mass	Lean body mass	Bone mass	BAT density
Log-TP	− 0.12	− 0.25	− 0.30	− 0.02	− 0.07	0.12
Log-LF	0.00	− 0.20	− 0.21	0.07	− 0.07	0.11
Log-VLF	− 0.24	− 0.22	− 0.31	− 0.17	− 0.24	0.13
Log-HF	− 0.07	− 0.21	− 0.24	0.03	0.07	0.11
LF/HF	0.04	0.04	0.07	0.03	− 0.14	− 0.04

BAT density was evaluated by examining total hemoglobin concentrations with near-infrared time resolved spectroscopy in the supraclavicular region. Partial correlation analyses were conducted with adjustments for age and sex
BAT brown adipose tissue, HF high frequency; LF low frequency, LF/HF LF to HF, TP total power, VLF very low frequency

ISSN: 1880-6805