Summary of the follow-up measures by sport-discipline
| Judo (n=34) | Swimming (n=21) | Volleyball (n=14) | |
| Weeks of athlete follow-up, mean (SD) | 42 (2) | 18 (2) | 15 (3) |
| Athletes’ response rate (%), mean (SD) | 50 (23) | 61 (27) | 56 (25) |
| Hours of sport exposure, median (IQR)* | 27 (20–34) | 21 (17–24) | 18 (14–20) |
| Specific training | 15 (10–20) | 16 (14–20) | 10 (6–12) |
| Strength and conditioning | 10 (7–15) | 3 (2–4) | 4 (3–5) |
| Competition | 0 (0–3) | 0 (0–0) | 2 (0–5) |
| Prevalence of health complaints (%), mean (95% CI)† | 28 (0 to 59) | 28 (0 to 65) | 36 (0 to 77) |
| Injury | 26 (0–52) | 19 (0–50) | 36 (0–75) |
| Medical attention | 23 (0–47) | 17 (0–43) | 31 (0–72) |
| Time loss | 13 (0–29) | 3 (0–13) | 12 (0–35) |
| Illness | 3 (0–10) | 9 (0–28) | 1 (0–5) |
| Medical attention | 1 (0–4) | 5 (0–18) | 1 (0–5) |
| Time loss | 2 (0–9) | 6 (0–19) | 1 (0–5) |
*Median and its 25%–75% IQR of hours of exposure measured every 2 weeks in judo, and weekly in swimming and volleyball.
†Due to variability in the prevalence of health complaints over the follow-up points of the study, the lower bound of the 95% confidence intervals (95% CI was negative. As prevalence values cannot be negative, the lower bound of the 95% CI was truncated to zero.