. 2024 May 7;121(5):e20220780. [Article in Portuguese] doi: 10.36660/abc.20220780

Table 2. Time domain analysis of all subjects and subgroups based on visceral fat rating.

Variables	All	G 1 (VFR = 1-8)	G 2 (VFR = 9-12)	G 3 (VFR > 12)	p value	p value adjusted
N	99	51	30	18
Average HR (bpm)	59.86 ± 6.06	58.89 ± 5.37	59.96 ± 6.42	62.47 ± 6.84	0.098	0.122
Average RR (s)	1.02 ± 0.10	1.03 ± 0.09	1.01 ± 0.10	0.97 ± 0.11	0.090	0.117
SDNN (ms)	1.664± 0.258	1.776± 0.229^{b c}	1.543± 0.258	1.548± 0.193	0.000	0.007
RMSSD (ms)	1.666 ± 0.258	1.779 ± 0.225^{b c}	1.543± 0.259	1.553± 0.202	0.000	0.006

Data is presented as mean ± SD; G: group; VFR: visceral fat rating; N: number of participants; Average RR: the average time between QRS complexes (i.e. beat to beat); SDNN: standard deviation of normal RR intervals; RMSSD: Root mean square of the successive differences of normal RR intervals. One-way analysis of covariance (ANCOVA) was used for group comparisons.