Table 1.
Means ± SD, means (95%CI), and p values for RR intervals and analysis of geometric heart rate variability indices in the control and functional training groups pre- and post-training.
| Control | FTG | p value | |||||
|---|---|---|---|---|---|---|---|
| Pre | Post | Difference | Pre | Post | Difference | ||
| RR intervals | 856.98 ± 92.79 | 851.53 ± 71.87 | −5.45 ± 104.25 | 815.78 ± 143.13 | 869.58 ± 112.27 | 53.80 ± 72.96 | 0.048 |
| 839.75(807.55–906.42) | 835.90(813.24–889.82) | −1.10(−302.20–156.90) | 768.30(729.28–902.29) | 886.50(801.73–937.43) | 79.90(−122.19–134.10) | ||
| RRtri | 12.68 ± 2.67 | 14.04 ± 4.15 | 1.72 ± 2.94 | 12.06 ± 4.06 | 17.29 ± 4.84 | 5.23 ± 3.74 | 0.009 |
| 12.95(11.25–14.10) | 13.40(12.19–16.61) | 0.71(−1.94–7.87) | 11.91(9.61–14.51) | 16.71(14.36–20.22) | −0.48(−1.47– 12.24) | ||
| TINN | 221.56 ± 74.89 | 247.19 ± 53.48 | 25.62 ± 104.40 | 184.62 ± 61.12 | 251.15 ± 58.88 | 66.53 ± 76.74 | 0.050 |
| 215.00(181.66–261.46) | 237.50(218.70–275.68) | 15.00(−105.00–365.00) | 180.00(141.05–225.18) | 260.00(215.57–286.74) | 65.00(−80.00–195.00) | ||
| SD1 | 30.19 ± 8.77 | 31.13 ± 10.86 | 0.91 ± 5.94 | 26.00 ± 17.85 | 38.06 ± 16.92 | 12.06 ± 8.22 | 0.001 |
| 29.55(25.51–34.86) | 30.40(25.32–36.90) | −0.45(−7.2–10.80) | 21.90(15.21–36.79) | 33.80(27.84–48.29) | 10.50(0.90–26.30) | ||
| SD2 | 68.06 ± 18.59 | 74.74 ± 23.99 | 6.67 ± 22.61 | 60.85 ± 15.68 | 94.90 ± 21.75 | 34.05 ± 21.38 | 0.003 |
| 61.65(58.16–99.97) | 70.80(61.96–87.52) | 7.05(−35.10–62.10) | 63.10(51.37–70.33) | 89.30(81.76–108.50) | 28.60(5.70–79.00) | ||
| SD1/SD2 | 0.44 ± 0.08 | 0.42 ± 0.13 | −0.01 ± 0.15 | 0.40 ± 0.21 | 0.38 ± 0.11 | −0.01 ± 0.16 | 0.287 |
| 0.46(0.31–0.59) | 0.38(0.26–0.73) | −0.06(−0.24–0.33) | 0.34(0.17–0.94) | 0.36(0.22–0.67) | 0.00(−0.48–0.16) | ||
Abbreviations: RR intervals = intervals between consecutive heart beats; RRtri = triangular index; TINN = triangular interpolation of RR intervals; SD1 = standard deviation of instantaneous beat-to-beat variability; SD2 = standard deviation of the long-term variability; SD1/SD2 = ratio between SD1 and SD2; 95%CI = 95% confidence intervals.