Table 2. Descriptive statistics for laboratory-based tests running and roller-ski skating in a group of national-level male cross-country skiers (n = 33).
| Running | Roller-ski skating | |
|---|---|---|
| Submaximal test | (8 km·h -1 ) | (12 km·h -1 ) |
| VO2 in %VO2max | 66.7 ± 5.1 (22.0) | 69.0 ± 6.1 (23.8) |
| Heart rate in %HRmax | 80.0 ± 5.4 (22.1) | 84.0 ± 5.7 (23.0) |
| Borg (6–20) | 11.8 ± 1.7 (6.0) | 11.8 ± 1.5 (6.0) |
| Blood lactate (mmol·L-1) | 2.00 ± 0.67 (3.04) | 2.67 ± 0.98 (3.84) |
| Gross efficiency (%) | NaN | 14.0 ± 0.5 (2.9) |
| TTE test | ||
| VO2max (L·min-1) | 5.05 ± 0.56 (2.38) | 4.89 ± 0.66 (3.03) |
| VO2max (mL·min-1·kg-1) | 70.8 ± 4.7 (21.4) | 68.1 ± 5.2 (17.6) |
| HRmax (beats·min-1) | 196 ± 10 (39) | 194 ± 9.5 (41) |
| Blood lactate (mmol·L-1) | 11.49 ±2.07 (9.46) | 11.55 ± 1.70 (7.22) |
| Borg (6–20) | 19.0 ± 0.8 (3.0) | 18.9 ± 0.8 (3.0) |
| TTE (s) | 402 ± 61 (280) | 328 ± 76 (360) |
| Speedpeak (km·h-1) | 15.7 ± 1.0 (4.5) | 22.4 ± 1.3 (7.0) |
Data are presented as mean ± SD (range).
SD = standard deviation; VO2 = oxygen uptake; HRmax = maximal heart rate; TTE = time to exhaustion; Speedpeak = peak treadmill speed; VO2max = maximal oxygen uptake; HRpeak = peak heart rate; VO2peak = peak oxygen uptake.