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. 2015 Sep;105(3):276–284. doi: 10.5935/abc.20150073

Table 4.

Heart rate during rhythmic breathing

  Diabetes Control p
HR (mean) 70.51 ± 7.43 70.22 ± 10.31 0.91
HR (SD) 4.78 ± 1.82 7.44 ± 7.44 < 0.01
SDNN (ms) 54.7(44.4–72.3) 86.65(68–86.65) < 0.01
RMSSD (ms) 28.45(19.8–42.1) 51.5(41.2–77.9) < 0.01
pNN50 (%) 8.4(1.2–20.2) 30(16–46.5) < 0.01
TP (ms2) 2966.5(1510–4815) 7406(3612–12,098) < 0.01
LF (ms2) 2136.5(963–3663) 6454(2363–9527) < 0.01
HF (ms2) 243(65–431) 640(320–1389) < 0.01
LF (nu) 90.7(84.4-94.2) 88.05(84–91.4) 0.379
HF (nu) 9.3(5.8-15.6) 11.95(8.6–16) 0.340

HR: Heart rate; SD: Standard deviation; SDNN: Standard deviation of NN intervals; RMSSD: Root mean square of successive differences; NN50: Number of pairs of successive NNs that differ by more than 50 ms; pNN50: Proportion of NN50 divided by the total number of NNs; TP: Total power; LF: Low frequency; HF: High frequency; nu: Normalized units.