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| http://dx.doi.org/10.31662/jmaj.2024-0144 | DOI Listing |
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Background: Sarcopenia, characterized by the gradual decline of muscle mass and strength, seriously affects the health and mobility of older adults. The purpose of this study is to investigate the risk factors for sarcopenia, particularly the relationship between chronic diseases and lifestyle factors in individuals aged 60 and over.
Methods: This study used data from the Longitudinal Study on Health and Retirement in China (CHARLS) collected in 2011 and 2015.
Nutritional Intervention and Musculoskeletal Health in Chronic Kidney Disease.
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Department of Nephrology, ''Iuliu Hatieganu" University of Medicine and Pharmacy Cluj-Napoca, 400012 Cluj-Napoca, Romania.
Chronic kidney disease (CKD) is a leading condition in terms of prevalence and overall health impact. With the increased life expectancy of the CKD population and the improvement in medical care, controlling musculoskeletal complications remains a tough challenge. Patients with CKD are prone to falls, fractures and sarcopenia, enhancing the risk of death.
View Article and Find Full Text PDFExperimental Study on the Dynamic Properties of Granite with Filled Joints of Different Thicknesses.
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Hubei Communication Investment Construction Group Co., Traffic Engineering Company, Wuhan 430070, China.
To investigate the dynamic characteristics, energy dissipation patterns, and failure modes of granite with filled joints of varying thicknesses under impact loading, we utilized the Split Hopkinson Pressure Bar (SHPB) test setup for impact tests on both unfilled and filled granite samples. Additionally, a high-speed camera was used to capture the dynamic failure and crack propagation processes of the rock samples in real time. The results indicate that the thickness of the filling material significantly affects the stress-strain behavior of jointed rock masses, particularly in terms of characteristics of stress variation and post-peak morphology.
View Article and Find Full Text PDFExperimental and Mechanistic Studies on the Tensile Sensitivity of a PDMS/MWCNT Nanocomposite and Its Application in Concrete Crack Monitoring.
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February 2025
School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China.
A polydimethylsilosane/multiwalled carbon nanotube (PDMS/MWCNT) nanocomposite, as a tensile-strain-sensing material, was manufactured using a simple solution casting method. The percolation threshold, the relationship between the temperature and resistance, the tensile sensitivity, and the mechanism of the tensile sensitivity of the PDMS/MWCNT nanocomposite were studied, along with its application in concrete crack monitoring. The results show that the PDMS/MWCNT nanocomposite demonstrated a significant percolation phenomenon.
View Article and Find Full Text PDFA 7T MRI Study of Fibular Bone Thickness and Density: Impact of Age, Sex and Body Weight, and Correlation with Bone Marrow Expansion and Muscle Fat Infiltration.
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February 2025
Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
Reduced bone mass and density, hallmark features of osteopenia and osteoporosis, significantly increase the risk of fractures, falls, and loss of mobility, especially in post-menopausal women and the elderly. This quantitative 7T MRI study examines the features of fibular bone thinning and bone mineral density loss (BMD) in 107 individuals (43F/64M) across various ages, body mass indices (BMIs), and ethnicities. Women had significantly lower cross-sectional bone wall thickness (BT) and bone tissue area (BA), along with greater BMD loss compared to men in those over age 50 ( = 77), but not in the younger group ( = 30).
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