Table 2 The linear regression relationship between local thresholds and systemic aerobic capacity indices.
|
Explained variable |
Explanatory variable (x) = BpVL |
Explanatory variable (x) = BpGL |
|
(y) |
b |
c |
R2a* |
RMSE* |
b |
c |
R2a |
RMSE |
LT |
VO2 (L·min-1) |
1.038 |
.199 |
.800 |
.334 |
.871 |
.314 |
.691 |
.415 |
|
VO2 (mL·min-1·kg-1) |
.942 |
5.622 |
.703 |
4.546 |
.779 |
7.351 |
.597 |
5.295 |
|
WR (W) |
.980 |
17.573 |
.774 |
16.535 |
.893 |
15.266 |
.665 |
20.161 |
GET |
VO2 (L·min-1) |
1.093 |
.221 |
.856 |
.280 |
.909 |
.363 |
.741 |
.376 |
|
VO2 (mL·min-1·kg-1) |
1.061 |
4.046 |
.795 |
3.833 |
.846 |
7.129 |
.660 |
4.937 |
|
WR (W) |
1.010 |
21.271 |
.864 |
12.513 |
.890 |
23.152 |
.689 |
18.964 |
Peak |
VO2 (L·min-1) |
1.583 |
.362 |
.803 |
.490 |
1.327 |
.542 |
.706 |
.598 |
|
VO2 (mL·min-1·kg-1) |
1.093 |
.221 |
.856 |
.280 |
.909 |
.363 |
.741 |
.376 |
|
WR (W) |
1.083 |
64.886 |
.773 |
18.348 |
1.030 |
55.415 |
.721 |
20.337 |
LT, lactate threshold; GET, gas exchange threshold; Peak, peak values during the incremental exercise; Linear regression (‘y=b*x+c’) with the least squares method was used to analyse the relationship between local thresholds (BpVL and BpGL) and systemic aerobic capacity indices (LT, GET and VO) when they were expressed as corresponding VO and WR; R, degree-of-freedom adjusted coefficient of determination; RMSE, root mean square error (standard error).* paired-samples tests showed significant differences in R (p < 0.001) and RMSE (p = 0.03) between the explanatory variables (x) (BpVL and BpGL).