Baseline measurement of HRV measures in the aerobic exercise protocol (YY test)
| Control (n=14) | Football (n=12) | Futsal (n=10) | p Value | Power | |
|---|---|---|---|---|---|
| mRRI (ms) | 967 (860–1088) | 978 (922–1195) | 917 (853–1047) | 0.553 | 1 |
| SDRR (ms) | 69 (43–83) | 80 (68–111) | 92 (64–101) | 0.070 | 1 |
| CVRR (%) | 6.6 (4.7–8.2) | 7.9 (6.8–13.2) | 9.0 (6.9–11.4) | 0.065 | 1 |
| rMSSD (ms) | 59 (23–74) | 63 (54–105) | 67 (52–86) | 0.328 | 0.99 |
| TP (ms2) | 1394 (618–2513) | 2234 (1426–3558) | 2935 (1287–3695) | 0.075 | 0.34 |
| VLFP (ms2) | 371 (162–596) | 823 (414–1846)* | 860 (543–1183)* | 0.008 | 0.85 |
| LFP (ms2) | 478 (127–863) | 539 (370–928) | 688 (455–1540) | 0.310 | 0.31 |
| HFP (ms2) | 526 (117–884) | 673 (525–1743) | 806 (390–1100) | 0.352 | 0.23 |
| nVLFP (nu) | 26.8 (15.8–54.9) | 30.2 (20.0–49.1) | 36.9 (32.9–43.3) | 0.249 | 1 |
| nLFP (nu) | 34.0 (21.0–42.6) | 29.0 (21.1–33.1) | 36.6 (22.4–41.1) | 0.279 | 1 |
| nHFP (nu) | 30.8 (13.6–50.9) | 39.6 (26.4–50.3) | 30.1 (20.1–35.4) | 0.261 | 1 |
| VLHR | 0.9 (0.4–3.5) | 0.7 (0.4–1.8) | 1.1 (0.9–2.1) | 0.417 | 0.66 |
| LHR | 1.4 (0.6–2.1) | 0.7 (0.6–1.0) | 1.3 (0.7–1.9) | 0.128 | 0.75 |
| HFF (Hz) | 0.2 (0.2–0.3) | 0.3 (0.2–0.3) | 0.3 (0.2–0.4) | 0.089 | 1 |
Data are presented as median values (25–75 centile).
*Significant difference versus control group (p<0.05).
CVRR, coefficient of variation of R-R interval; HFF, frequency of the high-frequency component; HFP, high-frequency power; HRV, heart rate variability; LFP, low-frequency power; LHR, LFP/HFP ratio; mRRI, mean R-R interval; nHFP, normalised HFP; nLFP, normalised LFP; nVLFP, normalised VLFP; rMSSD, the mean sum of the squared differences between R-R intervals; SDRR, SD of R-R interval; TP, total power; VLFP, very-low-frequency power; VLHR, VLFP/HFP ratio; YY, Yo-Yo intermittent recovery test level 1.