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Behav Res Ther. 2007 Mar;45(3):459-70. Epub 2006 May 22.

A randomized controlled trial on the long-term effects of a 1-month behavioral weight control program assisted by computer tailored advice.

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  • 1Institute of Behavioral Health, 3-29-11 Ishizaka, Dazaifu-city, Fukuoka 818-0118, Japan.



To examine the long-term effects of a new behavioral weight control program (Kenkou-tatsujin, KT program). The program consisted of twice-interactive letter communications including computer-tailored personal advice on treatment needs and behavioral modification.


A randomized controlled trial comparing Group KM: KT program with 6-month weight and targeted behavior's self-monitoring, Group K: KT program only, Group BM: an untailored self-help booklet with 7-month self-monitoring of weight and walking, and Group B: the self-help booklet only.


Two hundreds and five overweight Japanese females were recruited via a local newspaper.


Weight loss (body weight, BMI, reduction quotient, etc.) and behavioral changes (daily eating, exercise and sleeping habits).


A significant weight loss was observed in all groups. At 1 month, Groups KM and K were superior, but at 7 months, the mean weight loss was significantly more in Group KM than the other 3 groups. At 7 months, 8 dietary habits and 4 physical activities were improved in all subjects. Habitual improvement was related to the weight loss in Groups KM and K at 1 month.

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