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Table 1 Characteristics of the study population
| Mean | Range | |
|---|---|---|
| Age (y) | 34 | 26–40 |
| Weight (kg) | 83.5 | 51.3–123.2 |
| Height (cm) | 179.1 | 156.5–198.0 |
| BMI (kg/[m]2) | 26.0 | 19.8–35.0 |
| Body fat% | 24.5 | 7.6–41.8 |
| VO2maxa (ml/kg/min) | 39.6 | 23.3–72.6 |
| MET indexb | 3.5 | 0.1–27.7 |
| Activity class (0–10) | 4.4 | 0.0–9.5 |
| Working time (h) | 8.4 | 2.8–16.0 |
| Sleeping time (h) | 7.7 | 4.7–10.3 |
| Bergen burnout inventory total scoresc | 36 | 16–74 |
| Firstbeat variables | ||
| Work stress (%) | 72.8 | 14.5–99.2 |
| Total stress (%) | 49.9 | 12.6–79.1 |
| Stress index | 122.3 | 80.5–193.3 |
| RMSSD (sleep) | 56.78 | 22.6–150.6 |
| Stress balance (−1 to 1) | 0.69 | −0.43–1.00 |
| Total recovery (%) | 29.3 | 4.6–67.0 |
| Recovery index (24 h) | 92.2 | 74.0–112.2 |
| Recovery index (sleep) | 111.4 | 45.8–246.9 |
