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Authordc.contributor.authorBerger, Juan 
Authordc.contributor.authorBunout Barnett, Daniel 
Authordc.contributor.authorBarrera Acevedo, Gladys 
Authordc.contributor.authorMaza Cave, María Pía de la 
Authordc.contributor.authorHenríquez, Sandra 
Authordc.contributor.authorLeiva Balich, Laura 
Authordc.contributor.authorHirsch Birn, Sandra 
Cita de ítemdc.identifier.citationArchives of Gerontology and Geriatrics 61 (2015) 33–38en_US
Identifierdc.identifier.otherDOI: 10.1016/j.archger.2015.03.006
General notedc.descriptionArtículo de publicación ISIen_US
Abstractdc.description.abstractBackground: Simple and reliable methods to evaluate muscle mass in older people are lacking. Aim: To evaluate ultrasound as a measure of RF muscle mass and quality in healthy subjects of different ages and gender, assessing its concordance with dual energy X-ray densitometry (DEXA) and association with muscle strength and walking capacity. Methods: We selected 54 adults of both genders, aged 20-55 years and 51 adults older than 60 years. Ultrasound images of the RF were obtained at the mid-thigh to measure its thickness and ultrasonographic density using a GE Logiq e equipment. Body composition was assessed by DEXA. Quadriceps isometric strength and 12 minutes' walk were also measured and gender specific t scores for older adults were calculated using the values obtained in adults. Results: RF ultrasound measurements correlated significantly with lean body mass assessed by DEXA (Double energy X-ray absorptiometry). The concordance between both measures was also adequate. Older people had lower muscle mass and worse ultrasound parameters than adults. Older males with a t score for quadriceps strength of -2 or less, had a significantly higher RF grayscale density. Older males with a 12 minutes' walk t score of -2 or less and old males and females with a walking speed of 1 m/s or less had a lower RF thickness. Discussion: There is a good concordance between RF ultrasound and DEXA. Conclusions: Assessment of RF using ultrasound appears to be a reliable and accurate method to evaluate muscle mass in older people.en_US
Patrocinadordc.description.sponsorshipFONDECYT 1130284en_US
Type of licensedc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile*
Link to Licensedc.rights.uri*
Keywordsdc.subjectRectus femorisen_US
Títulodc.titleRectus femoris (RF) ultrasound for the assessment of muscle mass in older peopleen_US
Document typedc.typeArtículo de revistaen_US

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Atribución-NoComercial-SinDerivadas 3.0 Chile
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 Chile