Back to Search Start Over

Evaluation of appendicular lean mass using bio impedance in persons aged 80+

Authors :
Tinie Kardol
Roberta Vella-Azzopardi
Aldo Scafoglieri
Sofie Vermeiren
Mirko Petrovic
B. Jansen
Peter Clarys
Liesbeth De Donder
Paul De Hert
A. Antoine
David Beckwée
A. Scafoglieri
Gina Rossi
Erik Cattrysse
D. Verté
I. Bautmans
Bart Jansen
I. Beyer
Veerle Knoop
Ivan Bautmans
Ingo Beyer
Andreas Delaere
Vrije Universiteit Brussel
Rehabilitation and Physiotherapy
Rehabilitation Research
Frailty in Ageing
Physiotherapy, Human Physiology and Anatomy
Gerontology
Faculty of Medicine and Pharmacy
Research in Geriatrics and Gerontology
Geriatrics
Faculty of Sciences and Bioengineering Sciences
Electronics and Informatics
Faculty of Physical Education and Physical Therapy
Physical Medicine and Rehabilitation
Body Composition and Morphology
Supporting clinical sciences
Psychology
Brain, Body and Cognition
Personality and Psychopathology
Psychopathology and Information Processing in Older Adults
Metajuridica
Publication Year :
2019
Publisher :
Churchill Livingstone, 2019.

Abstract

Summary Background To date, the accuracy of bio-impedance (BIA) to assess body composition & sarcopenia in persons aged 80 and over remains unclear. Objective We aimed to evaluate the agreement between dual energy X-ray absorptiometry (DXA) and BIA equations to determine lean mass, as well as their suitability to identify sarcopenia. Design 174 community dwelling well-functioning persons (83 women, 91 men) aged 80 and over were included. Appendicular lean mass (ALM) was predicted using BIA-based equations available in literature, and compared to DXA outcomes. Through cross-validation and stepwise multiple linear regression, a new ALM-formula was generated suitable for this population. Results Literature-based BIA equations systematically overestimated ALM. The new prediction formula that we propose for the 80+ is: ALM = 0,827+(0,19*Impedance Index)+(2,101*Sex)+(0,079*Weight); R2 = 0,888; SEE = 1,450 kg. Sarcopenia classification based on our new BIA equation for ALM showed better agreement with DXA (k ≥ 0,454) compared to literature-based BIA equations (k Conclusions Despite the high correlation between both methods, literature-based BIA equations consistently overestimate ALM compared to DXA in persons aged 80 and over. We proposed a new equation for ALM, reaching higher agreement with DXA and thus improving the accuracy of BIA for this specific age group.

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....6af0044f49275a4a450bd10d5a54ecb8