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The Effectiveness of an E-Intervention on Health Behavior Promotion in Chinese University Students

Physical Activity Clinical Trial

Official title:
The Effectiveness of an E-Intervention on Health Behavior Promotion in Chinese University Students

Clinical Trial Summary

Through the internet and mobile phone SMS technology, and by using the Health Action Process Approach model as a theoretical backdrop, this 8-week theory-based intervention study aimed at developing a healthy lifestyle by supporting physical activity (PA) and a healthy dietary for Chinese university students. The investigators would examine whether the two intervention groups improve the participants' motivation for PA and healthy diets in comparison to the control group; whether, with the help of an intervention program, students are able to increase the PA levels and healthy diet consumption, and whether there are different effects between the two intervention programs.

Clinical Trial Description

For the main study, the sample size was estimated by using G*Power 3.1 software with MANOVA approach (repeated measure). For achieving small effect size of 0.15 (Lippke, Fleig, Wiedemann, & Schwarzer, 2015), with a power (1-β) of 0.8 and alpha of 0.05, the total sample size was 306. Assuming a drop-out rate of approximately 30%, a total of 399 participants were required for the study evaluation.

The effects of the intervention were evaluated by performing several analyses of MANOVA and MANCOVA measured at three points in time (8-week apart pre-post measures, and four weeks follow-up; T1-T3).In addition, moderated multiple mediation analysis was performed (Independent variable: intervention; Moderators: stage; Dependent variable: behavioural and social-cognitive outcomes). Baseline characteristics of participants who dropped out were compared with participants who finished the intervention to examine whether drop out is at random or determined by specific characteristics. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT03627949
Study type Interventional
Source Hong Kong Baptist University
Contact
Status Completed
Phase N/A
Start date June 1, 2016
Completion date February 28, 2018
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