Table 4. GRADE of evidence profile.
| Summary of findings | Quality assessment | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Outcome | No. of participants (studies) | Pooled effects (95%CI) | I2 | Risk of bias | Inconsistence | Indirectness | Imprecision | Publication bias | Quality rating |
| Back squat (kg) | 124(6) | 3.03(-3.55, 9.61) | 0% | Serious limitationa | No serious inconsistence | No serious in indirectness | No serious imprecision | Undetected | Low |
| LVP60%1RM (m/s) | 51(2) | 0.03 (-0.01, 0.07) | 0% | Serious limitationa | No serious inconsistence | No serious in indirectness | No serious imprecision | Undetected | Low |
| CMJ | 87(4) | 0.27(-0.15, 0.70) | 0% | Serious limitationa | No serious inconsistence | No serious in indirectness | No serious imprecision | Undetected | Low |
| Linear sprint (s) | 71(3) | 0.01 (-0.06, 0.07) | 0% | Serious limitationa | No serious inconsistence | No serious in indirectness | No serious imprecision | Undetected | Low |
| CODs | 44(2) | 0.46(-0.14, 1.07) | 0% | Serious limitationa | No serious inconsistence | No serious in indirectness | No serious imprecision | Undetected | Low |
a, one studies included in the outcome was non-randomized design; LVP60%1RM, load velocity profile with 60% one repetition maximum; CMJ, countermovement jump; CODs, change of direction speed