In the study of aging, ‘frailty’ is the state that increases the individual's vulnerability to develop dependence and/or increase mortality when exposed to stress factors. In the context of geriatrics and biomedical sciences, the concept of frailty has been operationalized differently, and the most used is the frailty phenotype, characterized by the presence of weight loss, low energy, slow mobility, muscle weakness and/or low level of physical activity. However, different constructs have emerged in recent decades complementing the traditional one of physical frailty. From a biopsychosocial, gerontological perspective, multidimensional and dynamic perspectives that include physical, functional, cognitive, and psychosocial domains (e.g. cumulative deficit model) are more relevant.

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frailty,ageing,lifespan trajectories,multidimensional and dynamic perspective,integrated healthcare

• Health Sciences - Medical and Health Sciences
• Psychology - Social Sciences