1. Skeletal Muscle Adiposity and Lung Function Trajectory in the Severe Asthma Research Program.
- Author
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Tattersall, Matthew, Lee, Kristine, Tsuchiya, Nanae, Osman, Fauzia, Korcarz, Claudia, Hansen, Kristin, Peters, Michael, Fahy, John, Longhurst, Colin, Dunican, Eleanor, Wentzel, Sally, Leader, Joseph, Israel, Elliot, Levy, Bruce, Castro, Mario, Erzurum, Serpil, Lempel, Jason, Moore, Wendy, Bleecker, Eugene, Phillips, Brenda, Mauger, David, Hoffman, Eric, Fain, Sean, Reeder, Scott, Sorkness, Ron, Jarjour, Nizar, Denlinger, Loren, and Schiebler, Mark
- Subjects
longitudinal lung function ,muscle adiposity ,severe asthma ,Adult ,Humans ,Female ,Male ,Lung ,Adiposity ,Forced Expiratory Volume ,Asthma ,Obesity ,Muscle ,Skeletal - Abstract
Rationale: Extrapulmonary manifestations of asthma, including fatty infiltration in tissues, may reflect systemic inflammation and influence lung function and disease severity. Objectives: To determine if skeletal muscle adiposity predicts lung function trajectory in asthma. Methods: Adult SARP III (Severe Asthma Research Program III) participants with baseline computed tomography imaging and longitudinal postbronchodilator FEV1% predicted (median follow-up 5 years [1,132 person-years]) were evaluated. The mean of left and right paraspinous muscle density (PSMD) at the 12th thoracic vertebral body was calculated (Hounsfield units [HU]). Lower PSMD reflects higher muscle adiposity. We derived PSMD reference ranges from healthy control subjects without asthma. A linear multivariable mixed-effects model was constructed to evaluate associations of baseline PSMD and lung function trajectory stratified by sex. Measurements and Main Results: Participants included 219 with asthma (67% women; mean [SD] body mass index, 32.3 [8.8] kg/m2) and 37 control subjects (51% women; mean [SD] body mass index, 26.3 [4.7] kg/m2). Participants with asthma had lower adjusted PSMD than control subjects (42.2 vs. 55.8 HU; P
- Published
- 2023