2.2. Procedures and Ethics
This study was conducted between September 2022 and November 2022 in accordance with the Declaration of Helsinki (rev. 2013) relating to the ethical principles for medical research involving human subjects [Prior to the measurements, participants and their parents were invited to a meeting with the research team to be informed about the purpose of the study and to understand the study protocol and possible effects that might result. An explanatory letter was also sent to all parents who were unable to attend the meeting and who were asked to complete an informed consent form for their children’s participation in the study. Once the ethical consents were signed, the height, weight, and body composition were measured for each participant, and at the same time, responses to a specially designed self-administered four-part questionnaire were collected (demographics, knowledge of PA-related injuries, PA levels, and SB). All measurements were performed in air-conditioned classrooms and all participants were instructed not to eat or drink two hours before the anthropometric measurements and to dry their feet thoroughly before walking on the measuring device.