Table 4.
Multivariate analysis of variance of heart rate variability variables in baseline and test conditions in the control and experimental groups.
| Variables | Baseline, mean (SD) | Test, mean (SD) | P value | ||
| RR meana | .02 | ||||
|
|
Control | 800.33 (109.02) | 816.89 (106.59) |
|
|
|
|
Experimental | 1004.52 (148.41) | 930.90 (132.45) |
|
|
| SDRRb | .56 | ||||
|
|
Control | 62.55 (24.12) | 65.64 (20.16) |
|
|
|
|
Experimental | 111.35 (33.97) | 109.81 (32.44) |
|
|
| RMSSDc | .04 | ||||
|
|
Control | 43.10 (19.96) | 41.60 (20.16) |
|
|
|
|
Experimental | 93.80 (40.71) | 80.07 (31.73) |
|
|
| pNN50d | .36 | ||||
|
|
Control | 23.83 (17.53) | 20.77 (17.25) |
|
|
|
|
Experimental | 42.90 (18.63) | 34.64 (17.52) |
|
|
| LFe | .39 | ||||
|
|
Control | 3063.58 (2789.61) | 2595.49 (2190.80) |
|
|
|
|
Experimental | 6612.13 (3438.65) | 6972.52 (3760.22) |
|
|
| HFf | .10 | ||||
|
|
Control | 661.70 (458.82) | 739.14 (547.80) |
|
|
|
|
Experimental | 2985.17 (2311.75) | 2046.96 (1594.17) |
|
|
aRR mean: average RR intervals.
bSDRR: SD of RR intervals.
cRMSSD: root mean square of differences between adjacent RR intervals.
dpNN50: percentage of consecutive RR intervals that differ by >50 ms between them.
eLF: low frequency.
fHF: high frequency.