Table 2 Comparison of the classical indices and the indices stemming from the dynamical analysis of VO2 and HR: the gain \({\text{K}}\) and the decay time \({\uptau }\).
From: Validity of dynamical analysis to characterize heart rate and oxygen consumption during effort tests
Indices | Measurement 1 | Measurement 2 | p value | Cohen’s d |
|---|---|---|---|---|
Group 1: training | ||||
MAP (W) | 239.8 (55.2) | 242.7 (60.0) | 0.85 | |
VO2 max (mL/min/kg) | 33.6 (6.1) | 42.5 (7.4) | < 0.01 | 1.31 |
HR max (beat/min) | 186.9 (10.1) | 188.5 (7.2) | 0.51 | |
Power VT1 (W) | 97.2 (50.7) | 113.9 (40.9) | 0.16 | |
Power VT2 (W) | 174.7 (54.5) | 181.0 (49.8) | 0.64 | |
HRR (beat/min) | 35.0 (12.3) | 36.9 (9.6) | 0.53 | |
rHRI (beat/min/s) | 0.5 (0.2) | 0.5 (0.1) | 0.84 | |
\(\tau_{HR}\) (s) | 106.4 (33.7) | 108.3 (32.2) | 0.82 | |
\(K_{HR}\)(beat/min/W) | 0.43 (0.13) | 0.43 (0.12) | 0.96 | |
\(\tau_{{VO_{2} }}\)(s) | 58.9 (19.9) | 57.5 (27.7) | 0.84 | |
\(K_{{VO_{2} }}\)(mL/min/W) | 6.9 (1.7) | 9.2 (1.1) | < 0.01 | 1.61 |
Group 2: deconditioning | ||||
MAP (W) | 231.9 (31.1) | 226.4 (27.4) | 0.62 | |
VO2 max (mL/min/kg) | 62.5 (5.6) | 49.9 (6.4) | < 0.01 | 2.11 |
HR max (beat/min) | 199.6 (7.2) | 200.6 (5.0) | 0.65 | |
Power VT1 (W) | 116.3 (20.8) | 101.1 (16.9) | 0.04 | 0.80 |
Power VT2 (W) | 184.0 (26.6) | 165.2 (29.0) | 0.10 | |
HRR (beat/min) | 38.3 (9.0) | 41.3 (10.3) | 0.50 | |
\(\tau_{HR}\) (s) | 100.2 (37.3) | 91.7 (25.1) | 0.50 | |
\(K_{HR}\)(beat/min/ W) | 0.4 (0.1) | 0.4 (0.1) | 0.64 | |
\(\tau_{{VO_{2} }}\)(s) | 54.6 (19.4) | 58.4 (30.9) | 0.70 | |
\(K_{{VO_{2} }}\)(mL/min/W) | 12.6 (1.7) | 8.9 (1.1) | < 0.01 | 2.57 |
