Dynapenic Abdominal Obesity As a Predictor of Worsening Disability, Hospitalization, and Mortality in Older Adults: Results From the InCHIANTI Study

Overview

Journal J Gerontol A Biol Sci Med Sci

Specialty Geriatrics

Date 2017 Mar 23

PMID 28329134

Citations 30

Authors

Andrea P Rossi

Lara Bianchi

Stefano Volpato

Stefania Bandinelli

Jack Guralnik

Mauro Zamboni

Luigi Ferrucci

Affiliations

Soon will be listed here.

Abstract

Background: There are relatively few prospective studies evaluating the combined effect of abdominal obesity and low muscle strength on mortality, hospitalization, and incident disability. The aim of this study was to prospectively evaluate the prognostic value of dynapenic abdominal obesity on incident disability, hospitalization, and mortality in the population of the InCHIANTI study.

Methods: In 370 men and 476 women aged between 65 and 95 years, handgrip strength, waist circumference (WC), body mass index, interleukin-6, C-reactive protein, education, medications, smoking status, and comorbidities were evaluated at the baseline. Difficulties in performing basic activities of daily living were assessed at baseline and at 3-, 6-, and 9-year follow-ups, using a standardized questionnaire. Hospitalization and mortality rates were evaluated during an 11-year follow-up. The study population was categorized as nondynapenic nonabdominal obese (ND/NAO, reference group), dynapenic nonabdominal obese (D/NAO), nondynapenic abdominal obese (ND/AO), and dynapenic abdominal obese (D/AO), according to handgrip strength/WC tertiles.

Results: D/AO participants presented more than a twofold increase in risk of worsening disability (odds ratio = 2.10; 95% confidence interval [CI]: 1.14-3.88) and significantly higher risk of hospitalization (1.36; 95% CI: 1.04-1.78) compared with ND/NAO participants. After adjustment for potential confounders, the relative risk of death was 1.47 (95% CI: 1.09-1.97) for D/NAO compared with the ND/NAO group.

Conclusions: Dynapenic abdominal obese participants are at higher risk of worsening disability and hospitalization than ND/NAO participants. Mortality risk was higher in participants with dynapenia without central fat distribution compared with the reference group.

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