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Table 2 Results of BIA body compositions analysis, muscle-fat analysis, obesity estimation, and body water analysis. SMM; skeletal muscle mass, BIA; bioimpedance analysis, ICW; intracellular water, ECW; extracellular water, TBW; total body water. All values are expressed as mean value ± standard deviation

From: The correlation analysis between sagittal alignment and cross-sectional area of paraspinal muscle in patients with lumbar spinal stenosis and degenerative spondylolisthesis

BIA Overall Male Female P value
ICW (ℓ) 19.1 ± 4.4 22.1 ± 3.8 16.4 ± 3.0 < 0.001
ECW (ℓ) 12.4 ± 2.7 14.2 ± 2.2 10.8 ± 1.9 < 0.001
ECW/TBW (Leg) 0.398 ± 0.015 0.396 ± 0.015 0.399 ± 0.014 0.157
ECW/TBW (Whole body) 0.395 ± 0.012 0.393 ± 0.012 0.397 ± 0.011 < 0.05
Protein (kg) 8.3 ± 1.9 9.5 ± 1.7 7.1 ± 1.3 < 0.001
Mineral (kg) 2.9 ± 0.6 3.3 ± 0.6 2.6 ± 0.4 < 0.001
Soft lean mass (kg) 40.3 ± 9.1 46.4 ± 7.8 34.6 ± 6.2 < 0.001
Skeletal muscle mass (SMM) (kg) 22.9 ± 5.8 26.8 ± 5.0 19.4 ± 3.9 < 0.001
Body fat mass (kg) 18.7 ± 7.8 18.4 ± 8.0 19.0 ± 7.7 0.422
Percent body fat (%) 30.1 ± 9.3 26.6 ± 7.9 33.3 ± 9.3 < 0.001