Table 1.
Risk of bias according to the PEDro Scale.
| Study | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Response to each item level of evidence | ||||||||||||
| Casado-Robles et al. (2020) | Y | N | Y | Y | Y | N | N | Y | Y | Y | Y | 7 |
| Cecchini et al. (2003) | Y | N | Y | Y | Y | N | N | Y | Y | Y | Y | 7 |
| Cecchini et al. (2007) | Y | N | Y | Y | Y | N | N | Y | Y | Y | Y | 7 |
| Coppola et al. (2020) | Y | N | Y | Y | Y | N | N | Y | Y | Y | Y | 7 |
| Cuevas et al. (2016) | Y | N | Y | Y | Y | N | N | Y | Y | Y | Y | 7 |
| Gil-Arias et al. (2020) | Y | N | Y | Y | Y | N | N | Y | Y | Y | Y | 7 |
| Lis-Velado and Carriedo (2019) | Y | N | Y | Y | Y | N | N | Y | Y | Y | Y | 7 |
| Spittle and Byrne (2009) | Y | N | Y | Y | Y | N | N | Y | Y | Y | Y | 7 |
| Viciana et al. (2020) | Y | N | Y | Y | Y | N | N | Y | Y | Y | Y | 7 |
| Wallhead and Ntoumanis (2004) | Y | N | Y | Y | Y | N | N | Y | Y | Y | Y | 7 |
| Wallhead et al. (2014) | Y | N | Y | Y | Y | N | N | Y | Y | Y | Y | 7 |
Y, criterion fulfilled; N, criterion not fulfilled; 1, eligibility criteria were defined; 2, participants were randomly distributed into groups; 3, the assigned was concealed; 4, the groups were similar before of the intervention (at baseline); 5, all participants were blinded; 6, therapists (teachers) who conducted the intervention were blinded; 7, there was blinding of all evaluators; 8, the measures of at least one of the fundamental outcomes were attained from more than 85% of the participants initially; 9, “intention to treat” analysis was conducted on all participants who received the control condition or treatment as assigned; 10, the findings of statistical comparisons between groups were reported for at least one fundamental outcome; 11, the study gives variability and punctual measures for at least one fundamental outcome; total score: each satisfied item (except the first) adds 1 point to the total score.