Table 2.
Association between VO2peak and blood-volume parameters.
| VO2peak (mL·kg−1·min−1) | Hbmass (g·kg−1) | EV (mL·kg−1) | PV (mL·kg−1) | BV (mL·kg−1) |
|---|---|---|---|---|
| Unadjusted | r2 = 0.40 (p < 0.001) VO2peak = 2.089+3.139β1 | r2 = 0.37 (p < 0.001)VO2peak = 4.156+0.990β1 | r2 = 0.15 (p ≤ 0.006) VO2peak = 13.121+0.435β1 | r2 = 0.25 (p < 0.001)VO2peak = 6.141+0.358β1 |
| Adjusted for physical-activity |
r2 = 0.40 (p < 0.001) VO2peak = 2.098+ 2.548β1+0.012β2 |
r2 = 0.38 (p < 0.001)VO2peak = 4.004+0.785β1+0.013β2 | r2 = 0.25 (p < 0.005) VO2peak = 11.636+0.313β1+0.015β2 | r2 = 0.31 (p ≤ 0.001)VO2peak = 6.430+0.267β1+0.014β2 |
| Adjusted for physical activity and gender |
r2 = 0.41 (p < 0.001) VO2peak = 2.759+2.512β1+0.012β2 −0.242β3 |
r2 = 0.38 (p < 0.001)VO2peak = 6.628+0.741β1+0.013β2-1.027β3 | r2 = 0.25 (p ≤ 0.013) VO2peak = 17.639+0.300β1+ 0.016β2-3.927β3 | r2 = 0.31 (p ≤ 0.003)VO2peak = 12.408+0.240β1+0.014β2-2.964β3 |
| Adjusted for physical activity and PA-index 20-years old |
r2 = 0.41 (p < 0.001) VO2peak = 2.032+2.530β1+ 0.012β2+ 0.049β4 |
r2 = 0.38 (p < 0.001)VO2peak = 3.855+0.776β1+ 0.012β2+0.083β4 |
r2 = 0.25 (p ≤ 0.012) VO2peak = 10.776+0.308β1+0.015β2+ 0.228β4 |
r2 = 0.31 (p ≤ 0.003)VO2peak = 5.954+0.262β1+ 0.013β2+0.173β4 |
| Adjusted for physical activity and PA-index 40-years old |
r2 = 0.49 (p < 0.001) VO2peak = 3.039+1.943β1+ 0.013β2+ 0.795β5 |
r2 = 0.47 (p < 0.001)VO2peak = 4.372+0.592β1+ 0.014β2+0.850β5 |
r2 = 0.42 (p < 0.001) VO2peak = 7.643+0.262β1+ 0.016β2+ 1.088β5 |
r2 = 0.45 (p < 0.001)VO2peak = 4.906+0.209β1+ 0.015β2+0.995β5 |
Data are presented as adjusted and unadjusted r2 for the association between VO2max and blood-volume parameters. VO2peak, peak oxygen uptake; Hbmass, hemoglobin mass; EV, erythrocyte volume; PV, plasma volume; BV, blood volume; PA, physical activity; β1, blood parameters; β2, physical activity; β3, gender; β4, retrospective physical activity, 20 years of age; β5, retrospective physical activity, 40 years of age.