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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 
Admission datedc.date.accessioned2015-12-13T20:59:02Z
Available datedc.date.available2015-12-13T20:59:02Z
Publication datedc.date.issued2015
Cita de ítemdc.identifier.citationArchives of Gerontology and Geriatrics 61 (2015) 33–38en_US
Identifierdc.identifier.otherDOI: 10.1016/j.archger.2015.03.006
Identifierdc.identifier.urihttps://repositorio.uchile.cl/handle/2250/135670
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
Lenguagedc.language.isoenen_US
Publisherdc.publisherElsevieren_US
Type of licensedc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile*
Link to Licensedc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
Keywordsdc.subjectUltrasounden_US
Keywordsdc.subjectRectus femorisen_US
Keywordsdc.subjectSarcopeniaen_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