Weight reduction effects of a black soy peptide supplement in overweight and obese subjects: Double blind, randomized, controlled study

Jung Hyun Kwak, Chang Won Ahn, Soo Hyun Park, Sung Ug Jung, Byung Jung Min, Oh Yoen Kim, Jong Ho Lee

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The present study determined the effect of black soy peptide supplementation on body weight and body fat in overweight/obese subjects. In a double-blind controlled trial, participants (n = 80) were randomized to either soy peptide supplementation (the test group) or to a placebo (the placebo group). Sixty-four people completed the study, and anthropometric parameters, serum inflammatory markers, and leptin and lipid profiles were measured. After 6 weeks, the test group (n = 35) had significant reductions in body weight (p = 0.003) and body mass index (BMI) (p = 0.004), body fat mass (p = 0.038). After 12 weeks, they also had significant reductions in body weight (p < 0.001), BMI (p < 0.001), body fat percentage (p = 0.002), and body fat mass (p = 0.001). However, these significances were not observed in the placebo group (n = 29). In addition, net changes in body weight and body fat mass in the test group were significantly bigger than those in the placebo group after 12 weeks. Leptin levels were significantly reduced in the test groups (p = 0.047), but were not observed in the placebo group (p = 0.323). Interestingly, the subjects with weight reductions ≥1kg in the test group had greater reductions in circulating leptin levels (p = 0.002). Additionally, fasting insulin levels were significantly reduced in the test groups. The conclusion is that black soy peptide supplementation may be beneficial for body weight control in overweight/obese subjects.

Original languageEnglish
Pages (from-to)1019-1024
Number of pages6
JournalFood and Function
Volume3
Issue number10
DOIs
Publication statusPublished - 2012 Oct

All Science Journal Classification (ASJC) codes

  • Food Science

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