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Effect of adherence to self-monitoring of diet and physical activity on weight loss in a technology-supported behavioral intervention

Year: 2012
Type: article
Abstract: BACKGROUND: Examination of mediating behavioral factors could explain how an intervention works and thus provide guidance to optimize behavioral weight-loss programs. This study examined the mediating role of adherence to self-monitoring of diet and physical activity on weight loss in a behavioral weight-loss trial testing the use of personal digital assistants (PDA) for self-monitoring. METHODS: Mediation analysis was conducted to examine the possible mediating role of adherence to self-monitoring of diet and physical activity between treatments using varying self-monitoring methods (paper record, PDA, and PDA with daily tailored feedback messages) and weight loss. FINDINGS: The sample (N = 210) was predominantly white (78%) and female (85%). Compared to a paper record, using a PDA for self-monitoring diet (P = 0.027) and physical activity (P = 0.014) had significant direct effects on weight loss at 12 months, as well as a significant indirect effect on outcomes through improved adherence to self-monitoring (P(S) < 0.001). Receiving an automated daily feedback message via PDA only had a significant indirect effect on weight through self-monitoring adherence to diet (P = 0.004) and physical activity (P = 0.002). CONCLUSIONS: Adherence to self-monitoring of diet and physical activity is important as the underlying mechanism in this technology-supported behavioral weight-loss intervention.
DOI: 10.2147/ppa.s28889
Authors: Jing Wang, Susan Sereika, Chasens, Ewing, Matthews, Lora Burke
Language: English
Open Access status: gold
Estimated APC paid: $2,836
Funders: University of Pittsburgh, Deutsches Krebsforschungszentrum, Georgia Clinical and Translational Science Alliance, National Institutes of Health, National Institute of Nursing Research, National Institute of Diabetes and Digestive and Kidney Diseases, National Center for Research Resources
Awards: Center for Research in Chronic Disorders, G1564362494, General Clinical Research Center, University of Pittsburgh Clinical and Translational Science Institute, G517149770, Improving Self-Monitoring in Weight Loss with Technology, Long-term changes in weight and adipokines and the associations with genetic vari, G8232721138
OpenAlex ID: W2112417556
FWCI: 9.411
Cites: 30
Cited by: 96
Related to: 10