Effects of weight-loss tools and a group-based weight-loss support program: A randomized controlled trial

INTERVENTION: A single motivational lecture on weight loss A single motivational lecture on weight loss and provision of weight‐loss tools A single motivational lecture on weight loss, provision of weight‐loss tools, and a 6‐month group‐based weight‐loss support program (8 times in a 6‐month period) CONDITION: Obesity PRIMARY OUTCOME: Body weight SECONDARY OUTCOME: Waist circumference; Systolic blood pressure; Diastolic blood pressure; Triglycerides; High‐density lipoprotein cholesterol; Fasting plasma glucose INCLUSION CRITERIA: A body mass index is 25 or more but less than 40, and the presence of at least one of the following conditions. 1. Waist circumference 85cm or more in males and 90cm or more in females 2. Systolic blood pressure 130mmHg or more 3. Diastolic blood pressure 85mmHg or more 4. Triglycerides level 150mg/dL or more 5. High‐density lipoprotein cholesterol level less than 40mg/dL 6. Fasting plasma glucose level 110mg/dL or more