Muscle quality characteristics of muscles in the thigh, upper arm and lower back in elderly men and women

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 fol...

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Bibliographic Details
Published in:European journal of applied physiology 2018-07, Vol.118 (7), p.1385-1395
Main Authors: Yoshiko, Akito, Kaji, Takashi, Sugiyama, Hiroki, Koike, Teruhiko, Oshida, Yoshiharu, Akima, Hiroshi
Format: Article
Language:English
Subjects:
Adipokines - blood
Adiposity
Aged
Aged, 80 and over
Aging - physiology
Arm
Arm - growth & development
Arm - physiology
Biomedical and Life Sciences
Biomedicine
Cholesterol
Cholesterol - blood
Female
Geriatrics
Hand Strength
Human Physiology
Humans
Knee
Leptin
Lumbosacral Region - growth & development
Lumbosacral Region - physiology
Male
Muscle Contraction
Muscle Strength
Muscle, Skeletal - diagnostic imaging
Muscle, Skeletal - growth & development
Muscle, Skeletal - physiology
Occupational Medicine/Industrial Medicine
Older people
Original Article
Skeletal muscle
Sports Medicine
Statistical analysis
Thigh - growth & development
Thigh - physiology
Ultrasound
Walking
Women
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Summary: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  
ISSN:1439-6319
1439-6327
DOI:10.1007/s00421-018-3870-7