Purpose : This study aimed to examine the effects on workers' lifestyles of intervention using webbased health guidance program. Methods : The participants were 17 male workers, who underwent a medical checkup. At the beginning of the 24-week program, all participants were provided with face-to-face guidance by a health nurse in order to help them to set goals for improving their lifestyles. They were randomly divided into 3 groups: 6 workers in the Intervention Group, 6 in Control Group A, and 5 in Control Group B. Workers in the Intervention Group had access to information on ways to improve their lifestyle, a bulletin board, and a diary for self-monitoring on the website. Additionally, they received online advice individually, 4 times during the first 12 weeks, based on what was written in the diary. Those in Control Group A had access to the same health guidance, but did not get the online advice. Those in Control Group B only had access to information on the website. All workers underwent medical checkups on the 12th and 24th week of the program and answered questions on their lifestyle and self-efficacy. The criteria were the medical checkup data, lifestyle, self-efficacy, and the frequency of use of the website. Results : Participants in the Intervention Group showed significant improvements in weight, BMI, LDL-cholesterol level, and ALT level, whereas those in Control Group B showed improvements in the LDL-cholesterol level. Participants in Control Group A did not show significant improvement. Discussion : Participants in the Intervention Group showed significant improvement, while those in Control Group A, who had access to the same website content as those in the Intervention Group, did not. Thus, individual online advice has positive effects.
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