Table 2.
Statistical comparison of RP, Coherence, and proposed RSA indices between meditation and control groups along with standard frequency domain HRV measures (mean ± sd).
| Baseline | Practice (Early) | Practice (Middle) | Practice (Late) | Numbers | ||
|---|---|---|---|---|---|---|
| PI power in LF (10−3ms2) | Meditation Control |
2.23 ± 0.75 1.98 ± 0.50 |
2.22 ± 0.54 2.26 ± 0.70 |
2.18 ± 0.57 2.22 ± 0.90 |
2.45 ± 0.71 2.29 ± 0.72 |
1.86 ± 0.39 1.56 ± 0.48 |
| PI power in HF (10−3ms2) | Meditation Control |
1.96 ± 0.56 1.87 ± 0.64 |
2.75 ± 0.96 1.89 ± 0.64 |
2.90 ± 0.94 2.26 ± 0.76 |
2.70 ± 0.70 2.39 ± 0.80 |
2.42 ± 0.84 2.20 ± 0.92 |
| LF/HF | Meditation Control |
1.68 ± 0.26 1.48 ± 0.40 |
1.93 ± 0.41 1.27 ± 0.14 |
1.67 ± 0.28 1.35 ± 0.27 |
1.61 ± 0.27 1.40 ± 0.28 |
1.73 ± 0.36 1.25 ± 0.27 |
| RSA at dynamic fRP (ms/nrpu) | Meditation Control |
33.3 ± 5.6 29.0 ± 6.2 |
47.7 ± 6.9 (p = 0.01) 23.8 ± 7.2 (p > 0.1) |
43.1 ± 6.9 (p = 0.0005) 24.2 ± 7.5 (p > 0.1) |
47.8 ± 7.3 (p = 0.005) 25.2 ± 6.3 (p > 0.1) |
27.6 ± 4.9 (p > 0.1) 26.7 ± 5.5 (p > 0.1) |
| fRP (Hz) | Meditation Control |
0.20 ± 0.07 0.23 ± 0.08 |
0.16 ± 0.03 0.24 ± 0.08 |
0.17 ± 0.04 0.25 ± 0.07 |
0.17 ± 0.05 0.25 ± 0.07 |
0.22 ± 0.05 0.25 ± 0.05 |
| COH at dynamic fRP | Meditation Control |
0.89 ± 0.11 0.96 ± 0.03 |
0.93 ± 0.04 0.92 ± 0.08 |
0.89 ± 0.09 0.95 ± 0.05 |
0.89 ± 0.10 0.92 ± 0.09 |
0.86 ± 0.14 0.92 ± 0.06 |
| RSA at fixed freq. (ms/nrpu) | Meditation Control |
30.3 ± 6.5 29.8 ± 6.6 |
46.6 ± 8.0 (p = 0.05) 24.2 ± 7.7 (p > 0.1) |
41.5 ± 8.7 (p = 0.03) 25.2 ± 8.5 (p > 0.1) |
45.4 ± 10.9 (p = 0.003) 25.5 ± 7.1 (p > 0.1) |
28.3 ± 9.6 (p > 0.1) 27.1 ± 6.8 (p > 0.1) |
| COH at fixed freq. | Meditation Control |
0.63 ± 0.25 0.79 ± 0.15 |
0.81 ± 0.09 0.84 ± 0.13 |
0.75 ± 0.14 0.88 ± 0.09 |
0.78 ± 0.11 0.88 ± 0.10 |
0.62 ± 0.21 0.73 ± 0.19 |
| RP power in HF (10−4 rpu2) | Meditation Control |
1.93 ± 0.40 2.91 ± 0.79 |
1.27 ± 0.27 2.88 ± 0.72 |
1.43 ± 0.27 2.74 ± 0.69 |
1.37 ± 0.27 2.88 ± 0.70 |
2.00 ± 0.34 3.06 ± 0.80 |
| RSA at max COH in HF (ms/nrpu) |
Meditation Control |
32.7 ± 5.1 30.9 ± 6.5 |
43.1 ± 8.0 (p = 0.03) 27.7 ± 5.3 (p > 0.1) |
39.2 ± 8.9 (p = 0.03) 26.6 ± 7.6 (p > 0.1) |
38.6 ± 9.3 (p > 0.1) 27.7 ± 7.5 (p > 0.1) |
35.7 ± 6.1 (p > 0.1) 29.4 ± 5.6 (p > 0.1) |
| freq at max COH in HF (Hz) | Meditation Control |
0.22 ± 0.04 0.25 ± 0.05 |
0.19 ± 0.02 0.26 ± 0.07 |
0.19 ± 0.03 0.26 ± 0.06 |
0.20 ± 0.03 0.26 ± 0.06 |
0.23 ± 0.03 0.26 ± 0.06 |
| max COH in HF | Meditation Control |
0.86 ± 0.11 0.92 ± 0.07 |
0.84 ± 0.14 0.92 ± 0.06 |
0.86 ± 0.09 0.93 ± 0.05 |
0.83 ± 0.15 0.92 ± 0.07 |
0.85 ± 0.12 0.92 ± 0.04 |
| RP power in LF (10−4 rpu2) | Meditation Control |
0.42 ± 0.18 0.19 ± 0.05 |
0.70 ± 0.19 0.15 ± 0.06 |
0.53 ± 0.14 0.17 ± 0.07 |
0.53 ± 0.18 0.17 ± 0.06 |
0.34 ± 0.13 0.09 ± 0.02 |
| RSA at max COH in LF (ms/nrpu) |
Meditation Control |
33.6 ± 6.4 32.6 ± 6.3 |
26.7 ± 5.0 (p > 0.1) 34.6 ± 7.1 (p > 0.1) |
29.8 ± 6.5 (p > 0.1) 29.2 ± 7.2 (p > 0.1) |
33.6 ± 6.7 (p > 0.1) 33.9 ± 5.8 (p > 0.1) |
24.4 ± 6.4 (p > 0.1) 27.8 ± 5.6 (p > 0.1) |
| freq at max COH in LF (Hz) | Meditation Control |
0.12 ± 0.02 0.12 ± 0.02 |
0.13 ± 0.02 0.12 ± 0.02 |
0.13 ± 0.01 0.13 ± 0.02 |
0.13 ± 0.01 0.13 ± 0.02 |
0.13 ± 0.02 0.12 ± 0.02 |
| max COH in LF | Meditation Control |
0.64 ± 0.21 0.59 ± 0.22 |
0.82 ± 0.12 0.61 ± 0.21 |
0.79 ± 0.16 0.58 ± 0.19 |
0.74 ± 0.19 0.60 ± 0.16 |
0.61 ± 0.14 0.54 ± 0.18 |