“…Table 2 presents the following data from each of the studies: authors, publication year, country, type of study, comparisons, study objectives, participants, measurement variables and instruments, interventions and outcomes. Of the ten research articles included in this review, nine (90%) were randomised trials [21][22][23][24][25][26][27][28][29], and one (10%) was a quasi-experimental, longitudinal study [30]. Regarding the countries in which the different studies were carried out, there were three (30%) conducted in the USA [26,29,30], two (20%) in China [23,27], one (10%) in Denmark [21], one (10%) in Sweden [24], one (10%) in Poland [28], one (10%) in Italy [22] and one (10%) in England [25].…”