The overall quality of the evidence was ranged from verylow to moderate. For each outcome, there were fewer than 5studies included in the meta-analysis. Most studies also had small sample sizes. Concerning limitations in the design and implementation, the quality of the evidence was downgraded if more than 25% of the pooled data came from studies with a high risk of bias. For imprecision of the results, we low- ered our rating of the quality of the evidence if the pooled sample size was less than the optimal information size. A total number of participants of 300 was computed considering α of 0.05, β of 0.2, and an effect size of 0.3 standard deviations. None of the comparisons satisfied this second cut-off, and thus the evidence was always downgraded at least to moder- ate quality. The third reason for downgrading was the pres- ence of heterogeneity (I2> 25%), which can be explained by clinical reasons (differences in interventions and outcomes).