Table 2.
Assessment of Physiological Measures
| Variable | Baseline | 4-2-4 Stage | 5-5 Stage | |||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | |
| HF-HRV | 6.68 | 1.19 | 6.98 | 0.99 | 6.67 | 1.29 |
| BPM | 15.25 | 3.19 | 6.61 | 1.61 | 6.57 | 1.44 |
| HR | 75.15 | 11.91 | 71.26 | 10.24 | 72.60 | 10.08 |
| RMSSD | 52.16 | 30.39 | 65.35 | 34.57 | 66.23 | 38.36 |
| SDNN | 61.10 | 26.70 | 94.07 | 38.76 | 99.40 | 45.44 |
| LF-HRV | 981.47 | 666.42 | 5573.39 | 4605.47 | 6593.45 | 5618.72 |
| LF/HF Ratio | 1.27 | 1.00 | 4.47 | 3.13 | 7.51 | 5.35 |
| VLF-HRV | 223.08 | 240.13 | 139.79 | 95.51 | 191.95 | 176.12 |
| pNN50 | 30.32 | 18.91 | 30.83 | 14.27 | 30.05 | 16.87 |
| IBI | 816.92 | 120.29 | 858.04 | 113.64 | 841.03 | 104.85 |
| ARA | 7.02 | 7.56 | 16.02 | 21.01 | 27.95 | 31.59 |
Note: High frequency heart rate variability (HF-HRV). Respiration rate was measured in breaths-per-minute (BPM). Heart rate measured as the number of beats in 60 seconds (HR). Root mean squared of the successive differences between adjacent N-to-N peaks measured in ms (RMSSD). Standard deviation in N-to-N interval measured in ms (SDNN). Low frequency heart rate variability measured in ms2 (LF-HRV). Low frequency to high frequency ratio measured in ms2 (LF/HF Ratio). Very low frequency heart rate variability measured in ms2 (VLF-HRV). The number of interval differences of successive N to N intervals or heartbeat intervals greater than 50ms divided by the total number of NN intervals yielding a percentage (pNN50). Inter-beatinterval measured in ms (IBI). Abdominal Respiration Amplitude measured in volts (ARA).