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1Spinal Cord Damage Research Center and 2Veterans Affairs Medical Center, Bronx 10468; 3Departments of Medicine and Rehabilitation Medicine, Mount Sinai School of Medicine, New York 10029; and 6Body Composition Unit, St. Luke's-Roosevelt Hospital Center, New York, New York 10025;4Rancho Los Amigos National Rehabilitation Center, Downey 90242; 5Geffen School of Medicine, University of California, Los Angeles, California 90095; and 7Department of Orthopedic Surgery, University of Southern California School of Medicine, Los Angeles 90033
Submitted 6 August 2002 ; accepted in final form 3 August 2003
To determine the body composition differences across age, 133 men with chronic spinal cord injury (SCI) (66 with tetraplegia, 67 with paraplegia) were compared with an age-, height-, and ethnicity-matched able-bodied male reference population (n = 100) using two different dual-energy X-ray absorptiometry densitometers. The effects of duration of injury, level, and completeness of lesion were analyzed in the SCI population. Independent of age, total body and regional lean mass were lower and fat mass was higher in persons with SCI compared with controls. The SCI group was 13 ± 1% (means ± SE) fatter per unit of body mass index (kg/m2) compared with the control group (P < 0.0001). Advancing age was strongly associated with less lean mass and greater adiposity in those with SCI, whereas it was mildly related in the controls. Total body and regional arm and trunk, but not leg, lean tissues were lower in subjects with SCI, across all ages, than in the controls. In summary, persons with SCI were fatter for any body mass index and demonstrated significantly less lean and more adipose tissues for any given age compared with controls.
fat tissue mass; lean tissue mass; percent fat; tetraplegia; paraplegia; aging; dual-energy X-ray absorptiometry
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