Limitations

Several limitations of the present study should be mentioned. First, due to the SARS-CoV2 pandemic and the rigorous restrictions for the Austrian population, the period between the last training session and the qualitative interviews varied between 5.0 and 80.4 (MD = 52.9, IQR = 35.4) weeks. Therefore, it might have been difficult for some of the participants to remember the treatment well and give constructive feedback. Second, also due to COVID-19 restrictions, we were forced to conduct some of the interviews by telephone or video call because in-person meetings were prohibited. This, as well as working with translators, might have caused a certain bias in the interviews. Nevertheless, previous research demonstrated that both in-person and telephone interviews are accurate [