Signs of intolerance | Workforce | Proportion in % of total |
Asthenia | 20 | 76 |
Vertigo | 20 | 76 |
Dyspnea of effort | 18 | 72 |
Headache | 18 | 72 |
Tachycardia | 10 | 40 |
Chest pain | 3 | 12 |
Orthopnea | 2 | 8 |