Table 2 Age, anthropometry, training, pre-race experience, and race performance of subjects (R1,R2,R3,R4), n = 53
|  | Race 1 n = 12 | Race 2 n = 15 | Race 3 n = 12 | Race 4 n = 14 |
|---|---|---|---|---|
Type of race | 24-h MTB race | 24-h MTB race | 24-hour RUN race | Stage MTB race |
Age, y | 40.3 (9.1) | 36.8 (6.4) | 38.3 (7.7) | 38.0 (6.1) |
Body mass, kg | 75.2 (12.9) | 72.1 (11.0) | 66.3 (8.8) | 75.3 (8.2) |
Body height, m | 178.1 (11.6) | 176.7 (9.5) | 174.8 (10.9) | 176.6 (5.5) |
BMI, kg/m 2 | 23.5 (2.0) | 23.0 (1.9) | 21.7 (1.2) | 24.1 (2.0) |
Years as active cyclist or runner | 10.3 (5.7) | 8.6 (6.2) | 9.8 (7.2) | 11.4 (8.0) |
Number of finished ultra-marathons | 9.3 (7.2) | 8.3 (7.3) | 15.7 (19.3) | 5.6 (6.6) |
Total training hours weekly, h | 12.3 (7.0) | 12.1 (3.2) | 10.6 (4.2) | 10.7 (5.0) |
Training cycle or run hours weekly, h | 11.6 (6.2) | 11.4 (3.2) | 8.2 (3.4) | 9.6 (3.9) |
Training intensity, b/min | 139.2 (6.7) | 140.0 (9.3) | 141.3 (18.8) | 131.4 (12.3) |
Cases of EAH, absolute | 0 | 1 | 1 | 1 |
Prevalence of EAH, % | 0 | 6.7 | 8.3 | 7.1 |