George F. ZAROTIS; Walter TOKARSKI. Motivational Age Group Variations among Long-Term Male Clients of Health-Oriented Fitness Centres. Disease and Health: Research Developments Vol. 7, [S. l.], p. 50–63, 2025. DOI: 10.9734/bpi/dhrd/v7/4824. Disponível em: https://stm.bookpi.org/DHRD-V7/article/view/17761. Acesso em: 4 jun. 2026.