Browsing by Author "Lau, Erica Y"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
- ItemEvaluation of an Internet-short message service-based intervention for promoting physical activity in Hong Kong Chinese adolescent school children: a pilot study.(2012-08-17) Lau, Erica Y; Lau, Patrick W C; Chung, Pak-Kwong; Ransdell, Lynda B; Archer, EdwardEvaluation of acceptability and preliminary efficacy of an Internet and short message service SMS intervention for promoting physical activity PA in Hong Kong Chinese school children An 8 week quasi experimental study non randomly assigned 78 school children mean age 12 8 years to a an intervention group that received a stage matched Internet PA program two times a week and tailored SMS messages daily or b a no treatment control Data were collected from September 2008 until June 2009 Acceptability measures included exposure rate and participant s satisfaction Efficacy measures were changes in stage of motivational readiness SMR and self reported PA level Intervention participants demonstrated significant pre post increments in SMR Z 2 558 p 0 011 and self reported PA level F 1 76 4 50 p 0 04 There was a non significant trend between groups in both SMR p 0 24 and PA p 0 13 Despite the similar ratings of satisfaction between Internet M 3 12 0 74 and SMS M 3 12 0 84 participants displayed distinct patterns of exposure with 66 exhibiting a weekly login rate of 0 5 times person and an average of 3 75 minutes visit person In contrast 79 of participants read an average of 1 3 SMS person week and 47 voluntarily replied to 3 8 SMS person These findings demonstrate the acceptability and preliminary efficacy of an Internet SMS based intervention for promoting PA in Hong Kong school children The divergent exposure rates between the Internet and SMS may be a unique pattern for adolescents in early SMR Future research should be cognizant of the importance of SMR since it may influence utilization and or adherence
- ItemProgram implementation and effectiveness of a national workplace physical activity intervention: UPnGO with ParticipACTION.(0000-00-00) Lau, Erica Y; Faulkner, GuyINTERVENTION UPnGO with ParticipACTION UPnGO is a 6 week workplace physical activity PA initiative aiming to increase habitual PA steps during the workday Core intervention components included 1 self monitoring of steps and action planning behaviours using a Web mobile app with incentives and 2 organizational support which included senior management s role modeling and endorsement of the program RESEARCH QUESTION What is the effectiveness and levels of implementation of the UPnGO intervention What is the relationship between effectiveness and levels of implementation METHODS A single arm pre post test study design was used Participants were 660 employees from nine organizations who had valid step data and complete socio demographic information at baseline The primary outcome mean daily steps was assessed by Garmin VivoFit Using the usage data from the UPnGO web based system a composite score for levels of implementation was calculated based on participant s compliance with the self monitoring component and senior management s role modeling Associations of interest were analyzed using linear mixed effects models RESULTS Levels of implementation were highly variable across organizations mean 68 22 18 75 range 19 8 to 100 A significant Time Implementation IM status interaction effect was observed When stratified by IM status a significant increase in mean daily steps at week 6 was found among participants in the high 540 01 202 69 p 0 011 but not low 81 54 291 96 p 0 78 implementation group CONCLUSION Findings suggest significant intervention effects in increasing average daily steps among participants who were exposed to optimal levels of implementation 70 UPnGO may be a scalable workplace PA intervention at a national level although this needs further verification with more rigorous study designs