Table 2. Reliability of performance and inter-limb asymmetry variables obtained during the unilateral and bilateral standing broad jump (SBJ) variants.
| Variable |
Right leg |
Left leg |
Asymmetry (%) |
| P |
ES |
CV (%) (95% CI) |
ICC (95% CI) |
P |
ES |
CV (%) (95% CI) |
ICC (95% CI) |
P |
ES |
ICC (95% CI) |
|
Unilateral SBJ |
| Mean force |
.530 |
.10 |
10.86 (8.44, 15.24) |
.70 (.41, .86) |
.411 |
.11 |
8.78 (6.83, 12.32) |
.80 (.59, .91) |
.939 |
-.02 |
.35 (-.06, .65) |
| Mean velocity |
.830 |
.04 |
9.81 (7.63, 13.76) |
.59 (.26, .80) |
.424 |
.15 |
9.72 (7.56, 13.64) |
.58 (.24, .80) |
.763 |
-.07 |
.30 (-.11, .62) |
| Mean power |
.997 |
.00 |
15.46 (12.02, 21.69) |
.62 (.29, .81) |
.247 |
.18 |
12.16 (9.53, 17.20) |
.74 (.48, .88) |
.495 |
-.17 |
.31 (-.10, .63) |
| Peak force |
.627 |
.05 |
4.63 (3.60, 6.49) |
-.02 (-.41, .38) |
.278 |
.26 |
3.65 (2.84, 5.12) |
.18 (-.23, .54) |
.703 |
-.13 |
-.40 (-.69, -.01) |
| Peak velocity |
.578 |
-.12 |
8.06 (6.27, 11.31) |
.49 (.11, .74) |
.701 |
.07 |
7.47 (5.80, 10.48) |
.62 (.30, .82) |
.373 |
-.22 |
.32 (-.09. .64) |
| Peak power |
.675 |
-.09 |
11.29 (8.78, 15.84) |
.45 (.07, .72) |
.419 |
.16 |
9.63 (7.49, 13.51) |
.54 (.18, .77) |
.353 |
-.24 |
.27 (-.15, .60) |
| Impulse |
.657 |
-.07 |
7.62 (5.93, 10.70) |
.72 (.45, .87) |
.509 |
.11 |
7.68 (5.97, 10.77) |
.71 (.44, .87) |
.215 |
-.31 |
.30 (-.11, .62) |
|
Bilateral SBJ |
| Mean force |
.210 |
.19 |
10.00 (7.77, 14.03) |
.74 (.49, .88) |
.323 |
-.16 |
10.32 (8.02, 14.48) |
.72 (.46, .87) |
.208 |
.31 |
.32 (-.09, .63) |
| Mean velocity |
.141 |
-.22 |
8.61 (6.69, 12.08) |
.76 (.53, .89) |
.085 |
-.27 |
7.63 (5.93, 10.70) |
.75 (.50, .88) |
.310 |
-.20 |
.56 (.22, .79) |
| Mean power |
.805 |
.03 |
12.18 (9.47, 17.08) |
.81 (.61, .91) |
.174 |
-.21 |
12.61 (9.80, 17.68) |
.76 (.51, .89) |
.898 |
.03 |
.41 (.02, .70) |
| Peak force |
.649 |
-.07 |
7.42 (5.76, 10.40) |
.73 (.46, .87) |
.353 |
.17 |
6.18 (4.81, 8.67) |
.64 (.33, .83) |
.189 |
.32 |
.37 (-.03, .67) |
| Peak velocity |
.003 |
.44 |
5.45 (4.23, 7.64) |
.80 (.59, .91) |
.472 |
-.08 |
4.65 (3.61, 6.52) |
.88 (.74, .94) |
.430 |
-.15 |
.58 (.24, .79) |
| Peak power |
.410 |
.13 |
11.21 (8.72, 15.73) |
.75 (.50, .88) |
.406 |
.13 |
8.40 (6.53, 11.78) |
.74 (.49, .88) |
.816 |
-.05 |
.54 (.18, .77) |
| Impulse |
.515 |
-.08 |
7.83 (6.09, 10.99) |
.82 (.62, .92) |
.421 |
-.06 |
4.42 (3.43, 6.19) |
.93 (.85, .97) |
.419 |
-.17 |
.52 (.16, .76) |
P, P-value obtained through a paired samples t-test or Wilcoxon signed-rank test between the sessions 1 and 2; ES = Cohen’s d effect size ([Session 2 – Session 1/SD both]); CV = coefficient of variation; ICC = intraclass correlation coefficient; 95% CI = 95% confidence interval. Bold numbers indicate an unacceptable reliability (CV > 10% or ICC < 0.70).
