The influence of subcutaneous fat on the relationship between body composition and ultrasound-derived muscle quality.
Ultrasound echo intensity (EI) values are a popular assessment of muscle quality. The relationship between EI and total (%fat) and regional (%fatlimb) body composition was examined in 40 men, prior to and after accounting for subcutaneous fat thickness. Uncorrected EI values suggest that muscle quality improves (r = -0.329 to -0.224; P = 0.038-0.165) with greater %fat and %fatlimb. However, corrected EI values indicated that muscle quality decreases (r = 0.711 to 0.798; P < 0.001) with greater %fat and %fatlimb.
a Neuromuscular Research Laboratory, Department of Exercise and Sports Science, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-8700, USA.|b Allied Health Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.|c Human Movement Science Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Eric D
ED
Ryan
a Neuromuscular Research Laboratory, Department of Exercise and Sports Science, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-8700, USA.
Nicholas W
NW
Shea
a Neuromuscular Research Laboratory, Department of Exercise and Sports Science, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-8700, USA.|c Human Movement Science Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Gena R
GR
Gerstner
a Neuromuscular Research Laboratory, Department of Exercise and Sports Science, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-8700, USA.
Timothy J
TJ
Barnette
a Neuromuscular Research Laboratory, Department of Exercise and Sports Science, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-8700, USA.|d Army Research Laboratory, Aberdeen Proving Ground, Aberdeen, MD, USA.
Andrew J
AJ
Tweedell
a Neuromuscular Research Laboratory, Department of Exercise and Sports Science, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-8700, USA.
Craig R
CR
Kleinberg
adiposity; adiposité; echo intensity; gras intramusculaire; imagerie musculosquelettique; intensité de l’écho; intramuscular fat; limb percent fat; musculoskeletal imaging; obesity; obésité; percent fat; pourcentage de gras; pourcentage de gras segmentaire