TABLE 3.
The correlations and differences between the estimated VO2max from FFT and the measured VO2max from GXT.
| Gender | Estimated VO2max | Measured VO2max | CE | t | r | ICC | MAE | MAPE (%) | |
| (mL⋅kg–1⋅min–1) | (mL⋅kg–1⋅min–1) | (mL⋅kg–1⋅min–1) | (mL⋅kg–1⋅min–1) | ||||||
| ROW | |||||||||
| Male (n = 23) | 62.5 ± 6.0 | 60.7 ± 5.9 | 1.8 ± 3.6 | 2.429* | 0.798* | 0.736* | 3.0 ± 2.6 | 5.3 | |
| Female (n = 22) | 57.5 ± 6.3 | 56.7 ± 5.5 | 0.7 ± 3.3 | 1.047 | 0.851* | 0.841* | 2.7 ± 2.0 | 4.8 | |
| All (n = 45) | 60.0 ± 6.0 | 58.7 ± 6.0 | 1.3 ± 3.5 | 2.501* | 0.834* | 0.818* | 2.9 ± 2.3 | 5.0 | |
| RUN | |||||||||
| Male (n = 29) | 63.2 ± 4.8 | 62.3 ± 3.4 | 0.9 ± 2.6 | 1.838 | 0.851* | 0.787* | 2.2 ± 1.6 | 3.5 | |
| Female (n = 16) | 58.0 ± 4.4 | 55.6 ± 4.0 | 2.4 ± 2.4 | 3.902* | 0.837* | 0.727* | 2.7 ± 2.0 | 5.0 | |
| All (n = 45) | 61.3 ± 5.3 | 59.9 ± 4.8 | 1.4 ± 2.6 | 3.624* | 0.868* | 0.834* | 2.4 ± 1.7 | 4.1 |
CE, constant error, arithmetic mean of the difference between estimated and measured VO2max; t, t value from paried sample t-test; r, pearson correlation coefficient; ICC, intraclass correlation coefficient; MAE, mean absolute error; and MAPE, mean absolute percentage error. *Statistically significant (P ≤ 0.05).