Browsing Waterloo Research by Subject "body composition"
Now showing items 1-9 of 9
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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
(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, ... -
Bioelectrical Impedance Analysis Overestimates Fat-Free Mass in Breast Cancer Patients Undergoing Treatment
(Wiley, 2020-12)Background: Bioelectrical impedance analysis (BIA) is commonly used to assess fat-free mass (FFM) and fat mass (FM) in breast cancer patients. However, because of the prevalence of overweight, obesity and variable hydration ... -
Body size normalization of ultrasound measured anterior upper leg muscle thickness in younger and older males and females
(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
(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 ... -
Development of a bedside-applicable ultrasound protocol to estimate fat mass index derived from whole body dual-energy x-ray absorptiometry scans
(Elsevier, 2019-01)Objectives: Precise measures of adiposity are difficult to obtain in clinical settings due to a lack of access to accurate and reliable techniques. The aim of this study was to develop and internally validate a bedside-applicable ... -
Influence of subcutaneous adipose tissue and skeletal muscle thickness on rectus femurs echo intensity in younger and older males and females
(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 ... -
Rectus abdominis muscle thickness is a valid measure of cross-sectional area: implications for ultrasound
(Elsevier, 2022-03)Rationale and objectives: The rectus abdominis muscle exhibits early and significant muscle atrophy, which has largely been characterized using ultrasound measured muscle thickness. However, the validity of rectus abdominis ... -
Site-specific skeletal muscle echo intensity and thickness differences in subcutaneous adipose tissue matched older and younger adults
(Wiley, 2021-03)Background: Age-related deterioration of muscle mass does not occur uniformly across the body. However, there is limited knowledge on the uniformity of age-related muscle composition changes across the body. Objective: ... -
Ultrasound image resolution influences analysis of skeletal muscle composition
(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 ...