Health Literacy-based Weight Control Intervention
Condition: Obesity; Overweight
MeSH terms: Overweight
Study type: Interventional

Summary: 
      This research will be a continuation of 2015-2017 research projects of smart phone APP
      research granted by Ministry of Science and Technology. First of all, a
      four-wave-cross-sectional survey by cluster sampling is used to recruit 90 adolescents aged
      13-19 from high school, vocational schools or colleges to test the feasibility of the health
      literacy-based weight-control program. In the second stage, a two-arm randomized controlled
      trial (RCT) will be applied to recruit 240 overweight or obese teenagers to receive health
      literacy-based mobile Health App, smart sports watch Fitbit versa during the 12 months weight
      control program. Based on the previous research evidences, the outcome follow up will be
      scheduled on 3 months, 9 months, 15 months, and 21 months after the mobile Health Apps
      intervention. Short-term outcome indicators include health literacy, diet pattern, and
      dietary behaviors; long-term outcome indicators include BMI z-score, waist circumference.
      Intention-to-treat analysis, generalized linear mixed models with repeated measures, multiple
      regression analysis model, and counterfactual causal Inference will be applied to analyze the
      effectiveness of the interventions.
    

Detailed description: 
      Adolescent overweight and obesity are major health issues and challenges worldwide. According
      to the estimate of World Health Organization, the number of obese people in the world has
      tripled since 1975. Overweight and obese children and adolescents increased from 124 million
      in 1975 to 340 million in 2016. The obese young children will have a negative impact on the
      physical, psychological and social health, and will increase the risk of obesity in
      adulthood.

      This study is a continuing project of the research funded by the Ministry of Science and
      Technology to explore the smartphone app, health literacy. Purposes of this study are to (1)
      validate the Health literacy based mobile Health Apps Interventions, (2) conduct the mobile
      health apps and smart sports watches to intervene in 12 months and evaluate the effectiveness
      by follow-up repeated measures.

      Eligibility criteria. The inclusion criteria are 13-19 years old adolescents; Could use their
      mobile phones to upload diet records and photos; and Adolescents and their parents agree to
      involve in the study and sign the consent form.

      Exclusion conditions are the adolescent who with severe diseases (such as tumors and other
      diseases); and they already participate in other weight control program.

      Methods This research will be a continuation of 2015-2017 research projects of smart phone
      APP research granted by Ministry of Science and Technology. First of all, a
      four-wave-cross-sectional survey by cluster sampling is used to recruit 90 adolescents aged
      13-19 from high school, vocational schools or colleges to test the feasibility of the health
      literacy-based weight-control program. In the second stage, a two-arm randomized controlled
      trial (RCT) will be applied to recruit 240 overweight or obese teenagers to receive health
      literacy-based mobile Health App, smart sports watch Fitbit versa during the 12 months weight
      control program. Based on the previous research evidences, the outcome follow up will be
      scheduled on 3 months, 9 months, 15 months, and 21 months after the mobile Health Apps
      intervention. Short-term outcome indicators include health literacy, diet pattern, and
      dietary behaviors; long-term outcome indicators include BMI z-score, waist circumference.
      Intention-to-treat analysis, generalized linear mixed models with repeated measures, multiple
      regression analysis model, and counterfactual causal Inference will be applied to analyze the
      effectiveness of the interventions.

      Expected outcomes This study applies health literacy-based mobile Health Apps weight control
      program for the overweight and obese adolescents. By strengthening healthy lifestyle of
      healthy dietary pattern and physical activity for adolescents, we hope to effectively prevent
      adolescent obesity, so as to reduce the impacts of obesity to social, medical and economic
      burdens.
    

Intervention name(s): Health Literacy-based Weight Control Intervention
Intervention type(s): Other
Intervention description(s): intervention arm will be applied to receive health literacy-based mobile Health App, smart sports watch Fitbit versa during the 12 months weight control program
Allocation: Randomized
Intervention model: Parallel Assignment
Masking: None (Open Label)
Primary purpose: Health Services Research
Keywords: weight control; Adolescents; overweight; obesity; Mobile health