Relaxation or Regulation: The Acute Effect of Mind-Body Exercise on Heart Rate Variability and Subjective State in Experienced Qi Gong Practitioners
Table 6
Estimated means, standard errors, and 95% confidence intervals for all HRV parameters.
Overall sample (N = 32)
RS_0
SE CI
Qi_1
SE CI
Qi_2
SE CI
RS_1
SE CI
F
lnHF
6.04
0.29 [5.45; 6.62]
4.84
0.22 [4.39; 5.29]
4.78
0.2 [4.37; 5.2]
5.78
0.28 [5.21; 6.36]
20.01
<0.001
lnVLF
6.17
0.17 [5.83; 6.51]
7.37
0.18 [7.0; 7.74]
7.45
0.18 [7.1; 7.81]
6.3
0.19 [5.93; 6.7]
31.71
<0.001
Coherence
0.43
0.06 [0.3; 0.56]
0.49
0.06 [0.36; 0.61]
0.49
0.07 [0.36; 0.63]
0.34
0.05 [0.24; 0.43]
1.97
=0.14
SP coherence
0.79
0.12 [0.55; 1.04]
1.38
0.33 [0.71; 2.05]
1.35
0.13 [1.08; 1.63]
0.64
0.09 [0.46; 0.82]
4.35
=0.025
RMSSD
49.43
6.71 [35.74; 63.12]
22.96
1.81 [19.26; 26.66]
23.69
1.18 [19.91; 27.48]
47.77
7.67 [32.12; 63.42]
14.93
<0.001
SDNN
52.74
5.09 [42.36; 63.11]
65.26
4.53 [56.01; 74.51]
65.81
4.27 [57.11; 74.51]
53.04
5.61 [41.6; 64.48]
6.86
=0.006
HR
66.46
1.67 [63; 69.93]
89.85
1.49 [86.81; 92.9]
91.78
1.63 [88.45; 95.1]
65.95
1.6 [62.69; 69.22]
267.41
<0.001
The variables are the natural logarithm of high-frequency band (lnHF), the natural logarithm of the very low frequency band (lnVLF), coherence, the spline-interpolated coherence (SP coherence; all frequencies <0.004 Hz excluded), the root mean square of successive differences between heart beats (RMSSD), the standard deviation of the normal (NN) inter-beat intervals (SDNN), and heart rate (HR).
