Discussion
The results of this study are relevant when interpreted in the context of previous studies. Data collection post-intervention showed that in the TUG test participants in the IG improved their functionality and reduced their risk of falls by decreasing the time to perform the test by 7.43 s (In relation to the SPPB, widely used to establish functional categories and detect frailty, the IG improved by + 2.74 points (Trends were found, but were not statistically significant, in the Barthel index on autonomy in instrumental activities of daily living. These results are similar to those found by the studies of Martínez Velillaet al. [Moreover, maximal strength and lower limb power were not significantly modified after the multicomponent exercise intervention period. Similar findings were shown in the review conducted by Haider et al. [The results obtained in study show that a multicomponent training, based on lower limb strength exercise and aerobic endurance, is safe and effective for improving frailty in institutionalized older adults. The protocol used in our research complies with some aspects recommended by the WHO regarding physical activity for older people with chronic conditions [In the same line, Mikel Izquierdo et al., in their publication on physical activity guidelines in older people published in 2021 [Some limitations have to be acknowledged. The duration of the program (12 weeks) may not be as effective in an elderly population as it is in younger subjects, which could have biased some results. Nutrition and rest time were not recorded in this study. These variables can potentially have an influence on physical performance. Longer programs, monitoring nutrition and rest time, need to be tested in the institutionalized population in order to observe further physiological changes.