RT info:eu-repo/semantics/article T1 The Effects of Age, Organized Physical Activity and Sedentarism on Fitness in Older Adults: An 8-Year Longitudinal Study A1 Gomez Bruton, Alejandro A1 Navarrete Villanueva, David A1 Pérez Gómez, Jorge A1 Vila Maldonado, Sara A1 Gesteiro, Eva A1 Gusi, Narcís A1 Villa Vicente, José Gerardo A1 Espino, Luis A1 González Gross, Marcela A1 Casajús, José Antonio A1 Ara, Ignacio A1 Gómez Cabello, Alba A1 Vicente Rodríguez, Germán A2 Educacion Fisica y Deportiva K1 Deporte K1 Educación Física K1 Aging K1 Elderly K1 Exercise K1 Muscle K1 Health AB [EN] The aims of the present study were (1) to describe the changes in physical fitness during an 8 year follow-up in a large sample of Spanish adults aged 65 or over that are initially engaged in organized physical activity (OPA), (2) to compare fitness changes according to different age groups (65 to 69 vs. 70 to 74 vs. ≥75 years-old), (3) to evaluate the independent and combined effects of changes in OPA engagement and sitting time (ST) on physical fitness. A total of 642 (147 males) noninstitutionalized over 65 years-old participants completed the EXERNET battery fitness tests and completed a validated questionnaire from which information regarding OPA and ST were collected. All participants completed evaluations in 2008–2009 and in 2016–2017. An impairment of fitnessrelated variables happens after 65 years of age in both males and females, with the older participants (≥75), showing the largest decreases. Males who continued performing OPA demonstrated lower decreases in balance, leg flexibility and agility when compared to those who stopped performing OPA during the follow-up. Females who continued performing OPA demonstrated lower decreases of all variables except for balance when compared to those who stopped performing OPA during the follow-up. PB MDPI LK https://hdl.handle.net/10612/19405 UL https://hdl.handle.net/10612/19405 NO Gomez-Bruton, A., Navarrete-Villanueva, D., Pérez-Gómez, J., Vila-Maldonado, S., Gesteiro, E., Gusi, N., Villa-Vicente, J. G., Espino, L., Gonzalez-Gross, M., Casajus, J. A., Ara, I., Gomez-Cabello, A., & Vicente-Rodríguez, G. (2020). The effects of age, organized physical activity and sedentarism on fitness in older adults: An 8-year longitudinal study. International Journal of Environmental Research and Public Health, 17(12), 1-17. https://doi.org/10.3390/IJERPH17124312 DS BULERIA. Repositorio Institucional de la Universidad de León RD 19-may-2024