In correlation analysis , change in body composition showed positive correlation with endotoxin level ( r = 0.441 , p < 0.05 for BW ; and r = 0.350 , p < 0.05 for fat mass ) and the population of gut Lactobacillus plantarum ( r = 0.425 , p < 0.05 for BW ; and r = 0.407 , p < 0.05 for BMI ) .