Short-term (1–7 weeks) 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) | 20.1 | 6.0 | −1.7 | 8.5 | −3.7 to 0.4 | 3.9 | 19.4 | 10.8 |
| R speed AP (mm/s) | 21.9 | 5.9 | −3.2 | 14.6 | −5.2 to −1.2 | 3.8 | 17.4 | 10.5 |
| R 95% centile areal (mm2) | 886.4 | 268.6 | −93.8 | 10.6 | −204.0 to 16.3 | 208.6 | 23.5 | 577.8 |
| L speed ML (mm/s) | 18.7 | 5.7 | −1.4 | 7.5 | −3.7 to 1.0 | 4.4 | 23.5 | 12.2 |
| L speed AP (mm/s) | 21.0 | 6.4 | −2.2 | 10.5 | −4.6 to 0.3 | 4.7 | 22.4 | 13.0 |
| L 95% centile areal (mm2) | 822.6 | 231.9 | −89.8 | 10.9 | −182.6 to 2.9 | 175.6 | 21.3 | 486.4 |
| Star Excursion Balance Test | ||||||||
| R anteromedial (cm) | 77.7 | 6.2 | 2.3 | 3.0 | 2.3 (1.3 to 3.3) | 2.3 | 3.0 | 6.4 |
| R medial (cm) | 80.5 | 5.6 | 2.3 | 2.9 | 2.3 (1.4 to 3.3) | 3.3 | 4.1 | 6.1 |
| R posteromedial (cm) | 86.7 | 5.2 | 1.8 | 2.1 | 1.8 (0.6 to 2.9) | 3.6 | 4.2 | 7.2 |
| L anteromedial (cm) | 78.1 | 6.2 | 1.7 | 2.2 | 1.7 (0.5 to 2.9) | 2.8 | 3.6 | 7.8 |
| L medial (cm) | 81.7 | 5.3 | 1.4 | 1.7 | 1.4 (0.2 to 2.6) | 2.8 | 3.4 | 7.8 |
| L posteromedial (cm) | 87.1 | 5.0 | 2.2 | 2.5 | 2.2 (1.1 to 3.4) | 2.7 | 3.1 | 7.5 |
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 session 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.