Table 1 HRV parameters [means (SD)] in Test and Retest for the two groups formed according to the RF change between the Test and the Retest: "RF Change" (n = 14), and “RF no-change” (n = 7).

From: Resonance frequency is not always stable over time and could be related to the inter-beat interval

Parameter RF Group Test ReTest
IBImean Change (n = 14) 753.6 (110.2) 771.6 (94.9)
No-change (n = 7) 810.3 (98.9) 803.14 (109.6)
SDNN Change (n = 14) 74.0 (38.4) 82.9 (38.9)
No-change (n = 7) 92.3 (33.7) 88.1 (41.4)
RMSSD Change (n = 14) 44.9 (29.5) 50.0 (30.6)
No-change (n = 7) 50.1 (27.3) 46.0 (27.9)