title: Association of Body Composition with Curve Severity in Children and Adolescents with Idiopathic Scoliosis (IS).
abstract: The link between scoliotic deformity and body composition assessed with bioimpedance (BIA) has not been well researched. The objective of this study was to correlate the extent of scoliotic-curve severity with the anthropometrical status of patients with idiopathic scoliosis (IS) based on standard anthropometric measurements and BIA. The study encompassed 279 IS patients (224 girls/55 boys), aged 14.21 ± 2.75 years. Scoliotic curve severity assessed by Cobb's angle was categorized as moderate (10°-39°) or severe (≥40°). Corrected height, weight, waist and hip circumferences were measured and body mass index (BMI), corrected height z-score, BMI Z-score, waist/height ratio (WHtR) and waist/hip ratio (WHR) were calculated for the entire group. Body composition parameters: fat mass (FAT), fat-free mass (FFM) and predicted muscle mass (PMM) were determined using a bioelectrical impedance analyzer. The mean Cobb angle was 19.96° ± 7.92° in the moderate group and 52.36° ± 12.54° in the severe group. The corrected body heights, body weights and BMIs were significantly higher in the severe IS group than in the moderate group (p < 0.05). Significantly higher FAT and lower FFM and PMM were observed in the severe IS group (p < 0.05). The corrected heights and weights were significantly higher in patients with severe IS and normal weight (p < 0.01). Normal and overweight patients with a severe IS had significantly higher adiposity levels assessed by FAT, FFM and PMM for normal and BMI, BMI z-score, WHtR, FAT and PMM for overweight, respectively. Overweight IS patients were significantly younger and taller than underweight and normal weight patients. The scoliotic curve severity is significantly related to the degree of adiposity in IS patients. BMI z-score, WHtR and BIA seem to be useful tools for determining baseline anthropometric characteristics of IS children.
authors.affiliation: Department of Rehabilitation, School of Health Sciences, Medical University of Silesia, Ziolowa 45-47, 40-635 Katowice, Poland. ematusik@wp.pl.
authors.forename: Edyta
authors.initials: E
authors.lastname: Matusik
authors.affiliation: Department of Rehabilitation, School of Health Sciences, Medical University of Silesia, Ziolowa 45-47, 40-635 Katowice, Poland. jdurmala@gmail.com.
authors.forename: Jacek
authors.initials: J
authors.lastname: Durmala
authors.affiliation: Department of Pediatrics and Pediatric Endocrinology, School of Medicine in Katowice, Medical University of Silesia, Medykow 16; 40-752 Katowice, Poland. endocrin@wp.pl.
authors.forename: Pawel
authors.initials: P
authors.lastname: Matusik
mesh_terms: D000273:Adipose Tissue; D050154:Adiposity; D000293:Adolescent; D000886:Anthropometry; D001823:Body Composition; D001825:Body Fluid Compartments; D001827:Body Height; D015992:Body Mass Index; D049628:Body Size; D001835:Body Weight; D002648:Child; D017097:Electric Impedance; D005260:Female; D006801:Humans; D008297:Male; D009132:Muscles; D009765:Obesity / Q000150:complications*; D012600:Scoliosis / Q000473:pathology*; D012720:Severity of Illness Index; D055105:Waist Circumference; D049629:Waist-Hip Ratio
keywords: anthropometry; body composition; idiopathic scoliosis; percent body fat; spinal deformity
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