Table 4 Test-retest reliability outcomes of the PERF-FIT item scores. Grand mean of Time 1 and 2, Intraclass Correlation Coefficient (ICC) with 95% Confidence Interval, Standard Error of Measurement (SEM), Minimal Detectable Change (MDC95), Mean difference (Mean Dif) between test occasion (SD), Limits of Agreement (LoA) with upper and lower limit, percentage Coefficient of Variation (CV)
| PERF-FIT items | Grand Mean |
ICC Test-retest |
ICC 95% CI | SEM | MDC95 |
Mean Dif 1–2 | SD Dif | Lower limit | LoA | Upper limit | CV |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Item 1 Running (s) | 7.18 | 0.82 | 0.71–0.89 | 0.50 | 1.39 | −0.08 | 1.01 | −2.06 | 1.98 | 1.90 | 7.3 |
| Item 2 Stepping (s) | 13.74 | 0.80 | 0.64–0.89 | 1.09 | 3.01 | 0.90 | 2.01 | −3.04 | 3.94 | 4.85 | 8.5 |
| Item 3 Side jump (#) | 26.92 | 0.90 | 0.57–0.96 | 2.5 | 6.81 | −3.3 | 3.81 | −10.77 | 7.46 | 4.16 | 9.5 |
| Item 4 Long jump (cm) | 120.35 | 0.90 | 0.84–0.94 | 7.3 | 20.36 | −0.4 | 14.69 | −29.22 | 28.79 | 28.36 | 6.3 |
| Item 5 Overhead throw (cm) | 212.55 | 0.95 | 0.92–0.97 | 13.0 | 36.17 | −0.7 | 27.06 | −53.75 | 53.04 | 52.33 | 6.9 |
| Item 6 Throw and catch (max 50#) | 37.31 | 0.96 | 0.92–0.97 | 2.7 | 7.37 | −1.8 | 5.41 | −12.42 | 10.60 | 8.78 | 13.1 |
| Item 7 Bounce and catch (max 50#) | 41.07 | 0.92 | 0.73–0.96 | 3.4 | 9.33 | −4.1 | 5.79 | −15.43 | 11.34 | 7.26 | 11.2 |
| Item 8 Jump (max 20#)* | 19.35 | 0.36 | 0.01–0.59 | 0.8 | 2.35 | −0.5 | 1.67 | −3.80 | 3.27 | 2.74 | 3.5 |
| Item 9a Hop Right (max 20#) | 15.49 | 0.92 | 0.86–0.95 | 1.6 | 4.37 | −1.1 | 3.12 | −7.16 | 6.11 | 5.05 | 13.6 |
| Item 9b Hop Left (max 20#) | 14.25 | 0.90 | 0.84–0.94 | 2.0 | 5.62 | −0.7 | 3.99 | −8.54 | 7.81 | 7.09 | 21.0 |
| Item 10a Static balance (max 60s)$ | 55.34 | 0.88 | 0.79–0.93 | 3.5 | 9.70 | −1.0 | 7.10 | −14.89 | 13.92 | 12.94 | 5.3 |
| Item 10b Dynamic balance (max 32#) | 26.40 | 0.88 | 0.81–0.92 | 1.9 | 5.34 | −0.4 | 3.88 | −8.05 | 7.61 | 7.16 | 8.6 |