Physical activity: the key to life satisfaction - correlations between physical activity, sedentary lifestyle, and life satisfaction among young adults before and after the COVID-19 pandemic - Bácsné Bába, Éva; Lengyel, Attila; Pfau, Christa; Müller, Anetta; Bartha, Éva Judit; Balogh, Renátó; Szabados, György; Bács, Zoltán; Ráthonyi, Gergely (Frontiers in Public Health, 2025)