Hisashi Kawai1, Takeshi Kera2, Ryo Hirayama2, Hirohiko Hirano2, Yoshinori Fujiwara2, Kazushige Ihara3, Motonaga Kojima4, Shuichi Obuchi2. 1. Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, 35-2 Sakae-cho, Itabashi-Ku, Tokyo, 173-0015, Japan. hkawai@tmig.or.jp. 2. Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, 35-2 Sakae-cho, Itabashi-Ku, Tokyo, 173-0015, Japan. 3. Department of Public Health, Toho University School of Medicine, 5-21-16 Omorinishi, Ota-ku, Tokyo, 143-8540, Japan. 4. Faculty of Health Sciences, University of Tokyo Health Sciences, 4-11 Ochiai, Tama-shi, Tokyo, 206-0033, Japan.
Abstract
BACKGROUND: Muscle thickness and echo intensity measured using ultrasound imaging represent both increased muscle volume and connective tissue accumulation. In combination, these ultrasound measurements can be utilized for assessing sarcopenia in community-dwelling older adults. AIMS: This study aimed to determine whether morphological and qualitative characteristics classified by quadriceps muscle thickness and echo intensity measured using ultrasound are associated with muscle strength, physical function, and sarcopenia in community-dwelling older adults. METHODS: Quadriceps muscle thickness and echo intensity were measured using ultrasound imaging in 1239 community-dwelling older adults. Latent class analyses were conducted to classify participants based on similarity in the subcutaneous fat thickness (FT), quadriceps muscle thickness (MT), subcutaneous fat echo intensity (FEI), and muscle echo intensity (MEI), which were assessed using ultrasound imaging. RESULTS AND DISCUSSION: Morphological and qualitative characteristics were classified into four types as follows: (A) normal, (B) sarcopenic obesity, (C) obesity, and (D) sarcopenia type. Knee extension strength was significantly greater in A than in B and D. FT and percent body fat were greater in C than in the other types. The correlation between the ultrasound measures and knee extension strength differed among the classification types. The classification types were significantly associated with sarcopenia prevalence. CONCLUSIONS: Classification of the morphological and qualitative characteristics obtained from ultrasound imaging may be useful for assessing sarcopenia in community-dwelling older adults.
BACKGROUND: Muscle thickness and echo intensity measured using ultrasound imaging represent both increased muscle volume and connective tissue accumulation. In combination, these ultrasound measurements can be utilized for assessing sarcopenia in community-dwelling older adults. AIMS: This study aimed to determine whether morphological and qualitative characteristics classified by quadriceps muscle thickness and echo intensity measured using ultrasound are associated with muscle strength, physical function, and sarcopenia in community-dwelling older adults. METHODS:Quadriceps muscle thickness and echo intensity were measured using ultrasound imaging in 1239 community-dwelling older adults. Latent class analyses were conducted to classify participants based on similarity in the subcutaneous fat thickness (FT), quadriceps muscle thickness (MT), subcutaneous fat echo intensity (FEI), and muscle echo intensity (MEI), which were assessed using ultrasound imaging. RESULTS AND DISCUSSION: Morphological and qualitative characteristics were classified into four types as follows: (A) normal, (B) sarcopenic obesity, (C) obesity, and (D) sarcopenia type. Knee extension strength was significantly greater in A than in B and D. FT and percent body fat were greater in C than in the other types. The correlation between the ultrasound measures and knee extension strength differed among the classification types. The classification types were significantly associated with sarcopenia prevalence. CONCLUSIONS: Classification of the morphological and qualitative characteristics obtained from ultrasound imaging may be useful for assessing sarcopenia in community-dwelling older adults.
Authors: Iván José Fuentes-Abolafio; Michele Ricci; María Rosa Bernal-López; Ricardo Gómez-Huelgas; Antonio Ignacio Cuesta-Vargas; Luis Miguel Pérez-Belmonte Journal: Aging Clin Exp Res Date: 2022-08-08 Impact factor: 4.481
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Authors: Stany Perkisas; Sophie Bastijns; Stéphane Baudry; Jürgen Bauer; Charlotte Beaudart; David Beckwée; Alfonso Cruz-Jentoft; Jerzy Gasowski; Hans Hobbelen; Harriët Jager-Wittenaar; Agnieszka Kasiukiewicz; Francesco Landi; Magdalena Małek; Ester Marco; Anna Maria Martone; Ana Merello de Miguel; Karolina Piotrowicz; Elisabet Sanchez; Dolores Sanchez-Rodriguez; Aldo Scafoglieri; Maurits Vandewoude; Veronique Verhoeven; Zyta Beata Wojszel; Anne-Marie De Cock Journal: Eur Geriatr Med Date: 2021-01-02 Impact factor: 1.710