Browsing Waterloo Research by Author "Avrutin, Egor"
Now showing items 1-6 of 6
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Association of strength, power, and physical performance with muscle mass and composition in older males: a comparison of muscle thickness, echo intensity, and lean tissue mass
Paris, Michael; Bell, Kirsten Elizabeth; Avrutin, Egor; Mourtzakis, Marina (Canadian Science Publishing, 2022-05)Dual-energy X-ray absorptiometry (DXA) appendicular lean tissue is used to screen older adults for sarcopenia. However, emerging data indicates that ageing-related muscle atrophy largely occurs within specific muscles, ... -
Body size normalization of ultrasound measured anterior upper leg muscle thickness in younger and older males and females
Paris, Michael; Bell, Kirsten Elizabeth; Avrutin, Egor; Mourtzakis, Marina (Nature Publishing Group, 2022-01)BACKGROUND: Ultrasound measurements of the anterior upper leg muscle thickness are often used to quantify muscle mass; however, the ideal normalization approach is unclear. Our primary objective was to examine how the ... -
Clinically Practical Approach for Screening of Low Muscularity Using Electronic Linear Measures on Computed Tomography Images in Critically Ill Patients
Avrutin, Egor; Moisey, Lesley; Zhang, Roselyn; Khattab, Jenna; Todd, Emma; Premji, Tahira; Kozar, Rosemary; Heyland, Daren; Mourtzakis, Marina (Wiley, 2018-07-12)Background: Computed tomography (CT) scans performed during routine hospital care offer the opportunity to quantify skeletal muscle and predict mortality and morbidity in intensive care unit (ICU) patients. Existing methods ... -
Influence of subcutaneous adipose tissue and skeletal muscle thickness on rectus femurs echo intensity in younger and older males and females
Paris, Michael; Bell, Kirsten Elizabeth; Avrutin, Egor; Rosati, Katherine; Mourtzakis, Marina (Wiley, 2022-09)Objectives—Ultrasound measurements of muscle echo intensity are commonly used surrogates of muscle composition (eg, intramuscular adipose tissue). However, given that soundwaves are increasingly attenuated with tissue ... -
Older males exhibit reduced anterior upper leg and anterior abdominal muscle thickness compared to younger males when matched for relative appendicular lean tissue
Paris, Michael; Bell, Kirsten Elizabeth; Avrutin, Egor; Mourtzakis, Marina (Elsevier, 2021-10)Background Ageing-related muscle atrophy does not occur uniformly across the body; rather, atrophy occurs to a greater extent in specific muscle groups compared to others. However, site-specific comparisons of muscle mass ... -
Ultrasound image resolution influences analysis of skeletal muscle composition
Paris, Michael; Bell, Kirsten Elizabeth; Avrutin, Egor; Mourtzakis, Marina (Wiley, 2020-06-03)Introduction: Analysis of muscle composition using ultrasound requires standardization of several equipment settings (i.e. gain). However, the influence of image resolution, which is altered by imaging depth, on measures ...