Table 3.
Values of HRV indexes in the frequency domain, in evaluated moments, expressed as mean and standard deviation
| Baseline | 1 | 5 | 10 | 15 | |
|---|---|---|---|---|---|
| LF ms | |||||
| 60% | 65.0±79.2 (16.5) | 198.0±200.7 (124.5)* | 266.3±228.2 (198.0)* | 205.8±172.1 (141.0)* | 236.8±235 (130.0)* |
| 90% | 44.9±71.5 (12.0) | 293.1±383.6 (170.0)* | 303.7±346.4 (189.0)* | 183.4±123.9 (146.0)* | 272.3±247.9 (287.0)* |
| LF nu | |||||
| 60% | 69.8±15.7 (73.3) | 67.4±18.0 (66.2) | 78.6±12.7 (77.1) | 70.5±15.5 (70.0) | 73.8±12.6 (74.5) |
| 90% | 64.2±24.3 (70.2) | 66.8±22.5 (68.7) | 69.9±22.9 (74.8) | 68.3±18.9 (71.0) | 71.5±22.0 (78.0) |
| HF ms | |||||
| 60% | 19.1±18.1 (13.0) | 82.6±48.2 (64.5)* | 86.6±116.1 (49.5)* | 75.3±61.5 (57.0)* | 106.8±138.1 (54.5)* |
| 90% | 21.5±29.11 (6.0) | 113.3±128.9 (62.0)* | 99.9±68.1 (102.5)* | 84.6±51.6 (77.5)* | 90.0±103.7 (55.5)* |
| HF nu | |||||
| 60% | 30.1±15.7 (26.7) | 32.5±18.0 (33.7) | 21.3±12.7 (22.9) | 29.4±15.5 (29.9) | 26.1±12.6 (25.4) |
| 90% | 35.7±24.3 (29.7) | 33.1±22.5 (31.3) | 30.0±22.9 (25.2) | 31.5±18.9 (28.9) | 28.4±22.0 (21.9) |
| LF/HF | |||||
| 60% | 3.2±2.3 (2.8) | 3.1±2.4 (1.9) | 7.1±6.8 (4.0) | 4.9±7.4 (2.3) | 4.0±4.1 (2.4) |
| 90% | 3.3±2.9 (2.5) | 5.1±6.5 (2.2) | 53.7±168.6 (3.5) | 3.2±2.8 (2.4) | 4.5±2.9 (3.7) |
Notes: Mean ± SD (Median);
*
statistical difference compared to baseline (P<0,05); I= immediately after session, 5=5 min after session, 10=10 min after session; 15=15 min after session.
Abbreviations: HRV, heart rate variability; nu, normalized units; LF, low frequency spectral component; HF, high frequency spectral component; min, minutes; SD, standard deviation.