Is phenotypical prefrailty all the same? A longitudinal investigation of two prefrailty subtypes in TILDA

Fried's frailty phenotype is defined by five criteria: exhaustion, unexplained weight loss, weakness, slowness and low physical activity. Prefrailty (PF) meets one or two criteria. PF is of interest as a target for preventative interventions, but it is not known if it is a homogenous syndrome.to compare the longitudinal trajectories of two PF groups: one defined by exhaustion and/or unexplained weight loss (PF1) and one defined by one or two of...