Measure | Runners (n=21) | Cyclists (n=17)‡* |
Started competing (age) | 18 (5) | 16 (1) |
Years competing | 7 (3) | 7 (3) |
Training hours (last year) | 549 (170)** | 909 (124)** |
Calcium intake (mg/day) | 1503 (674) | 1324 (558) |
Number of athletes training HRT last 2 years | 5 | 16 |
Incident† total career acute fractures (%) | 14* | 59* |
Incident† total career stress fractures (%) | 48 | 12 |
*P≤0.05. **P≤0.01.
†Cumulative incidence.
‡Two male cyclists did not respond to the questionnaire and were excluded from the present analysis.
HRT, heavy resistance training.