Assessment of the Body Composition and the Loss of Fat-Free Mass through Bioelectric Impedance Analysis in Patients Who Underwent Open Gastric Bypass

Table 1

Fat mass and fat-free mass before and after bariatric surgery.

Before surgery		After surgery (6 months)	𝑃 value
Fat mass (kg)	71.00±17.34	38.82±12.10	𝑃<0.001
Fat mass (%)	50.67±6.52	38.67±7.86	𝑃<0.001
Fat-free mass (Kg)	68.49±15.03	60.65±12.49	𝑃<0.001
Fat-free mass (%)	49.33±6.52	61.33±7.86	𝑃<0.001