Table 3.
Descriptive statistics and validity analysis based on Pearson’s r.
| My Jump 2 | OptoJump | Diff. (95% CI) | ES | r (95% CI) | Rating | |
|---|---|---|---|---|---|---|
| SJ | ||||||
| All | 22.3 ± 4.1 | 22.2 ± 4.5 | 0.1 (−1.36; 1.56) | 0.02 | 0.97 ** (0.95; 0.98) | Very large |
| Boys | 23.2 ± 4.6 | 23.1 ± 5.2 | 0.1 (−2.18; 2.38) | 0.02 | 0.98 ** (0.93; 0.99) | Very large |
| Girls | 21.1 ± 3.2 | 21.3 ± 3.4 | −0.2 (−1.87; 1.47) | −0.06 | 0.97 ** (0.91; 0.99) | Very large |
| CMJ | ||||||
| All | 24.5 ± 4.7 | 24.6 ± 4.3 | −0.2 (−1.63; 1.43) | −0.02 | 0.97 ** (0.95; 0.98) | Very large |
| Boys | 25.1 ± 5.5 | 25.2 ± 4.9 | −0.2 (−2.52; 2.32) | −0.02 | 0.98 ** (0.94; 0.99) | Very large |
| Girls | 23.7 ± 3.5 | 24.0 ± 3.6 | −0.3 (−2.10; 1.50) | −0.08 | 0.97 ** (0.89; 0.99) | Very large |
| CMJAM | ||||||
| All | 27.0 ± 5.8 | 27.2 ± 5.8 | −0.2 (−2.17; 1.77) | −0.03 | 0.99 ** (0.98; 0.99) | Very large |
| Boys | 28.2 ± 6.9 | 28.1 ± 6.8 | 0.1 (−3.08; 3.28) | 0.01 | 0.99 ** (0.99; 1.0) | Very large |
| Girls | 25.8 ± 3.9 | 26.1 ± 4.0 | −0.3 (−2.53; 1.93) | −0.08 | 0.97 ** (0.91; 0.99) | Very large |
Abbreviations: SJ, squat jump; CMJ, countermovement jump; CMJAM, countermovement jump free arms; ES, Cohen d effect size; Diff, difference; r, correlation coefficient; ** p < 0.01.