The use of portable A-mode ultrasound in appendicular lean mass measurements among older adults: a comparison study with dual-energy X-ray absorptiometry and handgrip strength.

Background/objectives: Strength and muscle mass are key factors for the diagnosis of sarcopenia. The EWGSOP2 recommended using ultrasound (US) as a reliable device to measure muscle mass (MM), but A-mode US still needs to be validated for older adults. This study aimed to evaluate the association between measurements of muscle thickness (MT) by portable A-mode US and, muscle quantity by Dual-Energy X-ray absorptiometry (DXA) in older adults.

Intra- and inter-rater reliability of muscle and fat thickness measurements obtained using portable ultrasonography in older adults.

Background & Aims: Ultrasonography (US) is a promising tool for assessing body composition, offering accuracy and accessibility. However, technician skills and equipment characteristics can impact measurement reliability. We aimed to evaluate the intra- and inter-rater reliability of two evaluators using A-mode Portable Ultrasound to measure muscle and fat thickness in Brazilian older adults.

Prevalence of sarcopenia according to EWGSOP1 and EWGSOP2 in older adults and their associations with unfavorable health outcomes: a systematic review.

Background: The European Working Group on Sarcopenia in Older People (EWGSOP) recently updated the definition and diagnostic criteria to assess sarcopenia, which can result in important changes in sarcopenia prevalence in older adults.

Aim: To compare the prevalence of sarcopenia through the diagnostic criteria and definition proposed by the first (EWGSOP1) and recent (EWGSOP2) European consensus in older adults. We also aimed to evaluate which sarcopenia consensus is better associated with unfavorable health outcomes.