Dynapenia, decreased muscle strength related to age, and obesity are major risk factors associated with physical functional decline and mortality in older adults. However, there is still little evidence that dynapenia and obesity, defined as dynapenic obesity, has additive effect in the incidence of disability and mortality in older adults. Thus, the aim of this study is to analyse the additive effect of dynapenia and abdominal obesity in incidence of disability in mobility, activities of daily living (ADL), instrumental activities of daily living (IADL) and mortality over 10 years follow-up comparing its effects among Brazilian and English older adults from the Health, Well-Being and Aging Study (SABE Study) and the English Longitudinal Study of Ageing (ELSA). For this, will be used data from the first wave of the SABE Study (2000), made up of 2,143 elderly, and from ELSA study (2002-2003), 7,246 elderly. The incidence of disabilityin mobility, ADL and IADL will be analysed by incidence density and mortality rates will be calculated. The additive effect of dynapenia and abdominal obesity in the incidence of disability in mobility, ADL and IADL will be analysed by Generalized Estimating Equations (GEE), Random effects models and Growth curve models and mortality with Cox proportional hazard models.
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