Table 2. Comparison, association and agreement between variables obtained during the track field and treadmill tests (N = 20).
| Variable | Track | Treadmill | P | % Diff | ICC | Bias |
|---|---|---|---|---|---|---|
| Field | (CI 95%) | (CI 95%) | (95% LoA) | |||
| Vpeak (km·h-1) | 18.1 ± 1.2 | 19.2 ± 1.5* | < 0.001 | 6.10 (1.9–11.4) | 0.94 (0.86–0.98) | 1.11 (-0.02–2.2) |
| Duration (min) | 36.2 ± 3.4 | 39.7 ± 4.2* | < 0.001 | 8.7 (1.2–17.9) | 0.92 (0.80–0.97) | 3.40 (0.1–6.6) |
| Distance (km) | 7.6 ± 1.1 | 8.7 ± 1.4* | < 0.001 | 14.10 (1.1–25.9) | 0.93 (0.84–0.97) | 1.10 (0.02–2.1) |
| HRmax (bpm) | 184.0 ± 10.2 | 185.0 ± 9.5 | 0.096 | 1.00 (-3–3) | 0.95 (0.88–0.98) | 0.90 (-4.8–6.6) |
| RPEmax (AU) | 19.3 ± 1.1 | 19.9 ± 0.5* | 0.012 | 3.10 (0–11) | 0.46 (0.04–0.75) | -0.05 (-0.46–0.4) |
| LApeak (mmol·L−1) | 8.2 ± 1.9 | 9.1 ± 2.9 | 0.219 | 15.6 (-26–35) | 0.25 (-0.20–0.62) | 0.50 (-1.9–2.9) |
Note: Vpeak_TF, Peak running velocity on the track field; Vpeak_T, Peak running velocity on the laboratory treadmill test; CI, confidence interval; ICC, intraclass correlation coefficient; LoA limits of agreement (LoA = bias = 1.96 SD).
*P < 0.05 in relation to the track field test.