Prevention of type 2 diabetes in a primary healthcare setting: Three-year results of lifestyle intervention in Japanese subjects with impaired glucose tolerance

Autor: Usui Takeshi, Sato Yuzo, Kawazu Shoji, Tominaga Makoto, Tsuzaki Kokoro, Kotani Kazuhiko, Tsujii Satoru, Tsushita Kazuyo, Sato Juichi, Sakane Naoki, Kamae Isao, Yoshida Toshihide, Kiyohara Yutaka, Sato Shigeaki, Kuzuya Hideshi
Jazyk: angličtina
Rok vydání: 2011
Předmět:
Zdroj: BMC Public Health, Vol 11, Iss 1, p 40 (2011)
Druh dokumentu: article
ISSN: 1471-2458
DOI: 10.1186/1471-2458-11-40
Popis: Abstract Background A randomized control trial was performed to test whether a lifestyle intervention program, carried out in a primary healthcare setting using existing resources, can reduce the incidence of type 2 diabetes in Japanese with impaired glucose tolerance (IGT). The results of 3 years' intervention are summarized. Methods Through health checkups in communities and workplaces, 304 middle-aged IGT subjects with a mean body mass index (BMI) of 24.5 kg/m2 were recruited and randomized to the intervention group or control group. The lifestyle intervention was carried out for 3 years by public health nurses using the curriculum and educational materials provided by the study group. Results After 1 year, the intervention had significantly improved body weight (-1.5 ± 0.7 vs. -0.7 ± 2.5 kg in the control; p = 0.023) and daily non-exercise leisure time energy expenditure (25 ± 113 vs. -3 ± 98 kcal; p = 0.045). Insulin sensitivity assessed by the Matsuda index was improved by the intervention during the 3 years. The 3-year cumulative incidence tended to be lower in the intervention group (14.8% vs.8.2%, log-rank test: p = 0.097). In a sub-analysis for the subjects with a BMI > 22.5 kg/m2, a significant reduction in the cumulative incidence was found (p = 0.027). Conclusions The present lifestyle intervention program using existing healthcare resources is beneficial in preventing diabetes in Japanese with IGT. This has important implications for primary healthcare-based diabetes prevention. Trial registration number UMIN000003136
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