Improvement of BMI, Body Composition, and Body Fat Distribution With Lifestyle Modification in Japanese Americans With Impaired Glucose Tolerance

D. Liao, P. J. Asberry, J. B. Shofer, H. Callahan, C. Matthys, E. J. Boyko, D. Leonetti, S. E. Kahn, M. Austin, L. Newell, R. S. Schwartz, W. Y. Fujimoto
2002 Diabetes Care  
OBJECTIVE -To determine whether diet and endurance exercise improved adiposityrelated measurements in Japanese Americans with impaired glucose tolerance (IGT). RESEARCH DESIGN AND METHODS -This study compared the effects of an American Heart Association (AHA) step 2 diet (Ͻ30% of total calories as fat, Ͻ7% saturated fat, 55% carbohydrate, and Ͻ200 mg cholesterol daily) plus endurance exercise for 1 h three times a week (treatment group) with an AHA step 1 diet (30% of total calories as fat, 10%
more » ... saturated fat, 50% carbohydrate, and Ͻ300 mg cholesterol) plus stretching exercise three times a week (control group) on BMI, body composition (% fat), and body fat distribution at 6 and 24 months of follow-up in 64 Japanese American men and women with IGT, 58 of whom completed the study. RESULTS -At 6 months, the treatment group showed significantly greater reduction in percent, body fat (Ϫ1.4 Ϯ 0.4 vs. -0.3 Ϯ 0.3%); BMI (Ϫ1.1 Ϯ 0.2 vs. -0.4 Ϯ 0.1 kg/m 2 ); subcutaneous fat by computed tomography at the abdomen (Ϫ29.3 Ϯ 4.2 vs. -5.7 Ϯ 5.9 cm 2 ), thigh (Ϫ13.2 Ϯ 3.6 vs. -3.6 Ϯ 3.0 cm 2 ), and thorax (Ϫ19.6 Ϯ 3.6 vs. -8.9 Ϯ 2.6 cm 2 ); and skinfold thickness at the bicep (Ϫ2.0 Ϯ 0.6 vs. 1.1 Ϯ 0.6 mm) and tricep (Ϫ3.7 Ϯ 0.8 vs. -0.9 Ϯ 0.6 mm), which continued despite moving to home-based exercise for the last 18 months. CONCLUSIONS -Diet and endurance exercise improved BMI, body composition, and body fat distribution and, thus, may delay or prevent type 2 diabetes in Japanese Americans with IGT.
doi:10.2337/diacare.25.9.1504 pmid:12196418 fatcat:aac4hpxlorey7m6rphql3ntgsq