Long-term (1–5 years) stability of static and dynamic postural control for 144 players (right (R) and left (L) leg)
| Session 1 baseline | Session difference | MDC | ||||||
|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | Per cent | 95% CI | SEM | Per cent | ||
| Balance platform test (static)* | ||||||||
| R speed ML (mm/s) | 22.2 | 6.7 | −3.1 | 14.0 | −4.0 to −2.1 | 3.7 | 16.7 | 10.2 |
| R speed AP (mm/s) | 23.3 | 5.3 | −1.1 | 4.7 | −2.0 to −0.3 | 3.3 | 14.2 | 9.1 |
| R 95% centile areal (mm2) | 791.3 | 260.5 | −7.0 | 0.9 | −54.2 to 40.2 | 187.8 | 23.7 | 735.7 |
| L speed ML (mm/s) | 21.7 | 6.6 | −2.7 | 12.4 | −3.6 to −1.8 | 3.7 | 17.1 | 10.2 |
| L speed AP (mm/s) | 23.2 | 5.6 | −1.7 | 7.3 | −2.4 to −0.9 | 0.6 | 2.6 | 1.7 |
| L 95% centile areal (mm2) | 790.2 | 249.6 | −44.7 | 5.6 | −88.5 to −0.9 | 173.9 | 22.0 | 482.0 |
| Star Excursion Balance Test | ||||||||
| R anteromedial (cm) | 74.1 | 5.8 | 2.6 | 3.5 | 1.9 to 3.4 | 3.2 | 4.3 | 8.9 |
| R medial (cm) | 77.0 | 6.0 | 3.3 | 4.3 | 2.7 to 4.0 | 2.8 | 3.6 | 7.8 |
| R posteromedial (cm) | 84.0 | 6.2 | 3.5 | 4.2 | 2.7 to 4.2 | 3.0 | 3.6 | 8.3 |
| L anteromedial (cm) | 74.2 | 5.4 | 2.8 | 3.8 | 2.1 to 3.6 | 3.0 | 4.0 | 8.3 |
| L medial (cm) | 77.4 | 6.1 | 2.9 | 3.7 | 2.1 to 3.8 | 3.6 | 4.7 | 10.0 |
| L posteromedial (cm) | 84.7 | 6.1 | 2.6 | 3.1 | 1.6 to 3.5 | 3.8 | 4.5 | 10.5 |
Data are presented as the session 1 baseline value (mean and SD), the mean session difference (with 95% CI), the SEM and the MDC. For the Good Balance test negative values denote an improvement from session 1 to 2, while for the Star Excursion Balance Test positive values represent an improved test score.
AP, anterior–posterior; MDC, minimal detectable change; ML, mediolateral; SEM, SE of measurement.