José Fernando Gómez

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Abstract Objectives: To assess the validity (convergent and construct) and reliability of the Short Physical Performance Battery (SPPB) among non-disabled adults between 65 to 74 years of age residing in the Andes Mountains of Colombia. Methods: Design: Validation study; Participants: 150 subjects aged 65 to 74 years recruited from elderly associations(More)
OBJECTIVES To present the study design and baseline results of the longitudinal International Mobility in Aging Study (IMIAS) on gender differences in physical performance and mobility disability prevalence in five diverse societies. METHODS Data are from surveys on random samples of people aged 65-74 years at Canadian (Kingston, Ontario; Saint-Hyacinthe,(More)
OBJECTIVES To assess the validity (convergent and construct) and reliability of the Short Physical Performance Battery (SPPB) among non-disabled adults between 65 to 74 years of age residing in the Andes Mountains of Colombia. METHODS Design Validation study; PARTICIPANTS 150 subjects aged 65 to 74 years recruited from elderly associations (day-centers)(More)
In The present work we consider the electromagnetic wave equation in terms of the fractional derivative of the Caputo type. The order of the derivative being considered is 0<λ≤1. A new parameter σ is introduced which characterizes the existence of the fractional components in the system. We analyze fractional derivative with(More)
OBJECTIVE To compare diurnal cortisol profiles across samples of older adults from diverse populations and to examine if differences in circadian cortisol secretion are associated with poor physical performance (SPPB<9). METHODS Data were collected during the baseline survey of the International Mobility in Aging Study conducted in 2012 in Kingston(More)
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