Skip to main content

Table 3 The period and amplitude of the cosine curve when the RA value was greater than 3

From: Nocturnal heart rate variability in 1-year-old infants analyzed by using the Least Square Cosine Spectrum Method

Subject Period (sec) Amplitude (bpm)
A (n = 273) 2.8 5.0
B (n = 336) 2.8 3.5
C (n = 323) 3.2 3.8
D (n = 275) 2.6 5.0
E (n = 510) 2.7 2.7
F (n = 595) 2.7 5.4
Average 2.8 4.2
SD 0.2 1.1
  1. To evaluate the RSA amplitude used as an index of cardiac vagal activity, we calculated when the RA was greater than 3. The period and amplitude values averaged 2.8 ± 0.2 s and 4.2 ± 1.1 bpm for the six subjects, respectively. The amplitude differed among individuals; the range extended from 2.7 to 5.4 bpm