Pre-intervention assessment
After initial contact with researchers, volunteers were scheduled an interview (through a video call) with one of the assessors where the eligibility criteria for participation in the study was checked. Eligible participants received the online consent form via email (see Additional file The baseline, 8-week, and 16-week online assessments was conducted via video call using a personalized link on the Google Meet platform, and the self-reported data were assessed using the Google Forms platform. All data entries collected by the questionnaire were converted and coded to an Excel spreadsheet (Microsoft Corporation, Redmond, Washington) and double-checked before analysis. The time scheme for study conduction is presented in Fig. Time scheme for study conduction