Table 1.
Heart rate, lactate and HRV measures (mean ± standard deviation) during resting state and all cycling conditions; WU (1): Warm-Up at 100 W; WU (2): Warm-Up at 150 W; IB (1–3): Interval-Block 1–3; AR (1–6): Active-Recovery 1–6.
| Rest | WU (1) | WU (2) | IB (1) | AR (1) | AR (2) | IB (2) | AR (3) | AR (4) | IB (3) | AR (5) | AR (6) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HR (1/min) | 66.5 ± 8.2 | 106.4 * ± 7.4 | 119.6 * ± 9.4 | 154.5 * ± 8.4 | 118.4 * ± 10.3 | 114.1 * ± 10.2 | 157.0 * ± 8.4 | 121.6 * ± 11.6 | 116.1 * ± 10.8 | 157.9 * ± 9.1 | 121.3 * ± 11.0 | 116.4 * ± 11.0 |
| La (mmol/L) | 0.91 ± 0.29 | 0.69 * ± 0.19 | 0.74 ± 0.28 | 3.81 * ± 1.28 | - | 1.09 * ± 0.53 | 3.54 * ± 1.18 | - | 1.16 * ± 0.52 | 3.48 * ± 1.25 | - | 1.23 * ± 0.60 |
| RPE (6–20) | - | 7.7 ± 2.0 | 9.2 * ± 2.2 | 14.8 * ± 1.4 | - | 8.4 * ± 2.3 | 15.4 * ± 1.8 | - | 8.7 * ± 2.4 | 15.6 * ± 1.6 | - | 8.2 * ± 2.2 |
| meanRR (ms) | 923 ± 108 | 566 * ± 39 | 505 * ± 38 | 390 * ± 22 | 510 * ± 43 | 530 * ± 46 | 384 * ± 22 | 498 * ± 47 | 521 * ± 46 | 381 * ± 23 | 499 * ± 43 | 519 * ± 46 |
| RMSSD (ms) | 56.3 ± 31.1 | 3.2 * ± 0.6 | 2.9 ± 0.7 | 2.5 * ± 0.5 | 3.1 * ± 0.4 | 2.8 ± 0.6 | 2.6 ± 0.5 | 3.0 ± 0.6 | 2.8 ± 0.6 | 2.6 ± 0.6 | 3.0 ± 0.6 | 2.8 ± 0.8 |
| DFA-alpha1 | 1.21 ± 0.25 | 1.49 * ± 0.19 | 1.25 * ± 0.30 | 0.67 * ± 0.15 | 1.37 * ± 0.19 | 1.37 ± 0.20 | 0.57 * ± 0.14 | 1.25 * ± 0.22 | 1.37 ± 0.23 | 0.58 * ± 0.18 | 1.30 * ± 0.21 | 1.32 ± 0.24 |
HR: heart rate, La: blood lactate concentration, RPE: rate of perceived exertion, meanRR: average of normal RR intervals, RMSSD: root mean square of successive differences, DFA-alpha1: short-term scaling exponent of detrended fluctuation analysis; * significant compared to preceding measurement (p < 0.05)