Akito Yoshiko1, Takashi Kaji2, Hiroki Sugiyama2, Teruhiko Koike3,4, Yoshiharu Oshida3,4, Hiroshi Akima4,5. 1. Graduate School of Medicine, Nagoya University, Tsurumai, Showa, Nagoya, Japan. yoshiko@nagoya-u.jp. 2. Kajinoki Medical Clinic, Kawai, Kani, Gifu, Japan. 3. Graduate School of Medicine, Nagoya University, Tsurumai, Showa, Nagoya, Japan. 4. Research Center of Health, Physical Fitness and Sports, Nagoya University, Furo, Chikusa, Nagoya, Japan. 5. Graduate School of Education and Human Development, Nagoya University, Furo, Chikusa, Nagoya, Japan.
Abstract
PURPOSE: The ratio of fat within skeletal muscle is an important parameter that is indicative of muscle quality, and can be assessed using ultrasonography to measure echo intensity (EI). Muscle EI indicates muscle strength and risk of physical dysfunction; however, this observation was determined following examinations of only selected muscle. The purpose of this study was to investigate the EI characteristics of muscles in several regions in elderly men and women, using physical function tests and serum cholesterol levels. METHODS: Twenty-two men and women (age 78 ± 8 years) participated in this study. The EIs were calculated from rectus femoris (RF), biceps femoris (BF) triceps brachii (TB) and multifidus (MF) using B-mode transverse ultrasound images. Seven functional tests (isometric knee-extension peak torque, functional reach, sit-to-stand, 5-m normal/maximal speed walking, handgrip strength and timed up-and-go) and blood lipid components including adipocytokines were measured in all participants. RESULTS: A statistically significant correlation between EI of the RF, TB and BF was observed (r = 0.46-0.50, P < 0.05), but not between EI of the MF and that of other muscles. EI of muscles of the limbs, which was averaged EI for RF, TB and BF, was negatively correlated with leptin levels (adjusted R2 = 0.27, P < 0.01), and EI of the MF was correlated with muscle mass and performance in the timed up-and-go test (adjusted R2 = 0.61, P < 0.01). CONCLUSION: These results suggest that EI might be influenced by specific parameters depending on the location of the muscle.
PURPOSE: The ratio of fat within skeletal muscle is an important parameter that is indicative of muscle quality, and can be assessed using ultrasonography to measure echo intensity (EI). Muscle EI indicates muscle strength and risk of physical dysfunction; however, this observation was determined following examinations of only selected muscle. The purpose of this study was to investigate the EI characteristics of muscles in several regions in elderly men and women, using physical function tests and serum cholesterol levels. METHODS: Twenty-two men and women (age 78 ± 8 years) participated in this study. The EIs were calculated from rectus femoris (RF), biceps femoris (BF) triceps brachii (TB) and multifidus (MF) using B-mode transverse ultrasound images. Seven functional tests (isometric knee-extension peak torque, functional reach, sit-to-stand, 5-m normal/maximal speed walking, handgrip strength and timed up-and-go) and blood lipid components including adipocytokines were measured in all participants. RESULTS: A statistically significant correlation between EI of the RF, TB and BF was observed (r = 0.46-0.50, P < 0.05), but not between EI of the MF and that of other muscles. EI of muscles of the limbs, which was averaged EI for RF, TB and BF, was negatively correlated with leptin levels (adjusted R2 = 0.27, P < 0.01), and EI of the MF was correlated with muscle mass and performance in the timed up-and-go test (adjusted R2 = 0.61, P < 0.01). CONCLUSION: These results suggest that EI might be influenced by specific parameters depending on the location of the muscle.
Authors: Anderson Rech; Regis Radaelli; Fernanda Reistenbach Goltz; Luis Henrique Telles da Rosa; Cláudia Dornelles Schneider; Ronei Silveira Pinto Journal: Age (Dordr) Date: 2014-08-29
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