title: Efficacy of a 3-month lifestyle intervention program using a Japanese-style healthy plate on body weight in overweight and obese diabetic Japanese subjects: a randomized controlled trial.
abstract: OBJECTIVE
  The portion size of food is a determinant of energy intake, linking with obese traits. A healthy plate for portion control has recently been made in a Japanese style. The aim of the current study was to assess the efficacy of a lifestyle intervention program using the Japanese-style healthy plate on weight reduction in overweight and obese diabetic Japanese subjects.
  
  
  METHODS
  We randomized overweight and obese diabetic subjects (n = 19, 10 women) into an intervention group including educational classes on lifestyle modification incorporating the healthy plate (n = 10) or a waiting-list control group (n = 9). The intervention period was three months, and the educational classes using the healthy plate were conducted monthly in a group session for the intervention group. The body weight, blood glycemic and metabolic measures, and psychosocial variables were measured at the baseline and after the 3-month intervention in both groups. The impression of the intervention was interviewed using a structured questionnaire.
  
  
  RESULTS
  There was one drop-out in the control group. No adverse events were reported in the groups. Subjects in the intervention group had a greater weight change from baseline to the end of the 3-month intervention period (-3.7 +/- 2.5 [SD] kg in the intervention group vs. -0.1 +/- 1.4 kg in the control group, P = 0.002). Most subjects recorded that the use of a healthy plate could be recommended to other people.
  
  
  CONCLUSIONS
  The lifestyle intervention program using the Japanese-style healthy plate, which was developed for portion control, may effectively reduce body weight in overweight and obese diabetic subjects in Japan. Further studies are needed to establish the efficacy of this methodology on weight management.
authors.forename: Keiko
authors.initials: K
authors.lastname: Yamauchi
authors.forename: Tomomi
authors.initials: T
authors.lastname: Katayama
authors.forename: Takahiro
authors.initials: T
authors.lastname: Yamauchi
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Kotani
authors.forename: Kokoro
authors.initials: K
authors.lastname: Tsuzaki
authors.forename: Kaoru
authors.initials: K
authors.lastname: Takahashi
authors.affiliation: Division of Preventive Medicine, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Kyoto, Japan. nsakane@kyotolan.hosp.go.jp.
authors.forename: Naoki
authors.initials: N
authors.lastname: Sakane
mesh_terms: D000410:Alanine Transaminase / Q000097:blood; D044466:Asian People; D001219:Aspartate Aminotransferases / Q000097:blood; D001794:Blood Pressure; D015992:Body Mass Index; D002784:Cholesterol / Q000097:blood; D003404:Creatinine / Q000097:blood; D002149:Energy Intake; D005247:Feeding Behavior; D005260:Female; D005500:Follow-Up Studies; D015438:Health Behavior; D006293:Health Promotion / Q000379:methods*; D006801:Humans; D007564:Japan; D008019:Life Style; D008297:Male; D009043:Motor Activity; D009765:Obesity / Q000628:therapy*; D050177:Overweight / Q000628:therapy*; D064787:Portion Size; D011795:Surveys and Questionnaires; D016896:Treatment Outcome; D055105:Waist Circumference; D015431:Weight Loss
chemical_list: D002784:Cholesterol; D003404:Creatinine; D001219:Aspartate Aminotransferases; D000410:Alanine Transaminase