Effect of partially-abraded brown rice consumption on body weight and the indicators of glucose and lipid metabolism in pre-diabetic adults: A randomized controlled trial

• Published in: Clinical nutrition ESPEN Vol. 19; pp. 9 - 15
• Main Authors: Araki, Risa, Ushio, Reiko, Fujie, Keiko, Ueyama, Yukari, Suzuki, Hiroaki, Nakata, Yoshio, Hashimoto, Koichi
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.06.2017
• Subjects: Anti-obesity effect; Dietary intervention; Gastroenterology and Hepatology; Lipid metabolism; Partially-abraded brown rice; Pre-diabetes; white rice; LDL-C; global physical activity questionnaire; low-density lipoprotein cholesterol; brief self-administered diet history questionnaire; ITT; intention-to-treat; WC; total cholesterol; BR; HDL-C; BDHQ; moderate-to-vigorous physical activity; VLDL; Pre-diabetes; high-density lipoprotein cholesterol; Lipid metabolism; WR; Anti-obesity effect; chylomicrons; BMI; not detected; Dietary intervention; PABR; n.d; waist circumference; body mass index; Partially-abraded brown rice; CM; gamma-aminobutyric acid; triglycerides; brown rice; physical activity; TC; HOMA-IR; PA; TG; homeostasis model assessment-insulin resistance; GABA; GPAQ; very low density lipoprotein; MVPA
• ISSN: 2405-4577; 2405-4577
• DOI: 10.1016/j.clnesp.2017.01.015

Summary Background and aims The partially-abraded brown rice (PABR) was produced by abrading the surface of brown rice (BR) to improve its water absorption and texture. Although PABR is expected to have the same health benefits as BR, this remains to be elucidated. We examined the effects of continuous intake of PABR compared to white rice (WR) on body weight and the indicators of glucose and lipid metabolism in overweight participants with pre-diabetes. Methods In this 12-week randomized controlled trial, 40- to 64-year-old overweight participants with pre-diabetes were allocated to receive either PABR or WR. The primary outcome was body weight at the end of the study; secondary outcomes were waist circumference (WC) and indicators of glucose and lipid metabolism. Results After the 12-week intervention, changes in body weight and WC in the PABR group were −2.4 ± 2.0 kg and −3.1 ± 2.9 cm, whereas in the WR group, they were −0.2 ± 1.1 kg and −0.4 ± 1.3 cm, respectively. There was significant difference between the two groups (body weight: p < 0.001, WC: p < 0.01). The triglyceride levels of low-density lipoprotein (LDL), small LDL, and very small LDL in the PABR group decreased more than those in the WR group (all p < 0.01). Additionally, daily defecation frequency was increased only in the PABR group (p < 0.05). Conclusions The present study suggested that continuous intake of PABR could be effective for body weight reduction and lipid metabolism improvement. This study was registered in the University Hospital Medical Information Network-Clinical Trials Registry as UMIN000016293.