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Changes in each component of the Fried frailty phenotype between the baseline and the end of the study. Difference assessed with the McNemar test for unintentional weight loss, self-reported exhaustion, slow walking speed, low physical activity, and weakness was statistically significant for each item: * p < 0.0001, ** p = 0.012, *** p < 0.0001, **** p < 0.0001, ***** p < 0.0001.
