Table 4 Pre- and post-test values for peak (V peak ) and average (V avg ) velocity (m*s −1 ) during concentric back squats in the 40, 60 and 80% of body mass conditions. The results are presented with the relative change (%) and Cohen’s d effect size with their respective p-values.
| Pre- test | Post- test | Percent change | Effect size | p value | |
|---|---|---|---|---|---|
| V avg 40% | |||||
| CON | 0.769 (0.184) | 0.846 (0.153) | 13.55 (23.54) | 0.46 | 0.062 |
| OS | 0.806 (0.138) | 0.877 (0.125) | 10.13 (12.28) | 0.55 | 0.002 |
| OL | 0.751 (0.118) | 0.946 (0.082) | 28.84 (23.34) | 1.95 | <0.001 |
| V peak 40% | |||||
| CON | 1.577 (0.379) | 1.657 (0.287) | 9.18 (25.29) | 0.24 | 0.432 |
| OS | 1.585 (0.312) | 1.713 (0.261) | 10.04 (15.46) | 0.45 | 0.030 |
| OL | 1.511 (0.253) | 1.866 (0.197) | 26.50 (23.20) | 1.58 | <0.001 |
| V avg 60% | |||||
| CON | 0.687 (0.183) | 0.739 (0.144) | 11.91 (25.34) | 0.32 | 0.288 |
| OS | 0.712 (0.150) | 0.771 (0.142) | 9.50 (12.86) | 0.40 | 0.012 |
| OL | 0.676 (0.100) | 0.808 (0.088) | 20.62 (9.95) | 1.41 | <0.001 |
| V peak 60% | |||||
| CON | 1.436 (0.379) | 1.493 (0.261) | 10.34 (32.59) | 0.18 | 0.980 |
| OS | 1.401 (0.317) | 1.513 (0.297) | 9.65 (14.42) | 0.36 | 0.038 |
| OL | 1.344 (0.363) | 1.666 (0.180) | 33.37 (42.35) | 1.18 | <0.001 |
| V avg 80% | |||||
| CON | 0.584 (0.153) | 0.642 (0.152) | 12.47 (19.23) | 0.38 | 0.082 |
| OS | 0.608 (0.156) | 0.681 (0.121) | 14.47 (12.51) | 0.52 | <0.001 |
| OL | 0.578 (0.125) | 0.701 (0.112) | 23.13 (13.42) | 1.03 | <0.001 |
| V peak 80% | |||||
| CON | 1.167 (0.230) | 1.343 (0.271) | 21.55 (41.94) | – | n.s. |
| OS | 1.258 (0.271) | 1.367 (0.230) | 9.84 (9.70) | – | n.s. |
| OL | 1.272 (0.237) | 1.481 (0.225) | 18.05 (14.70) | – | n.s. |
n.s. indicates a non-significant interaction.