Efficacy of a text message-delivered extended contact intervention on maintenance of weight loss, physical activity, and dietary behavior change

Spark, Lauren C., Fjeldsoe, Brianna S., Eakin, Elizabeth G. and Reeves, Marina M. (2015) Efficacy of a text message-delivered extended contact intervention on maintenance of weight loss, physical activity, and dietary behavior change. JMIR mHealth and uHealth, 3 3: e88. doi:10.2196/mhealth.4114


Author Spark, Lauren C.
Fjeldsoe, Brianna S.
Eakin, Elizabeth G.
Reeves, Marina M.
Title Efficacy of a text message-delivered extended contact intervention on maintenance of weight loss, physical activity, and dietary behavior change
Journal name JMIR mHealth and uHealth   Check publisher's open access policy
ISSN 2291-5222
Publication date 2015-07-01
Year available 2015
Sub-type Article (original research)
DOI 10.2196/mhealth.4114
Open Access Status DOI
Volume 3
Issue 3
Start page e88
Total pages 15
Place of publication Toronto, Canada
Publisher J M I R Publications
Language eng
Abstract Background: Extending contact with participants after the end of an initial intervention is associated with successful maintenance of weight loss and behavior change. However, cost-effective methods of extending intervention contact are needed.
Formatted abstract
Background: Extending contact with participants after the end of an initial intervention is associated with successful maintenance of weight loss and behavior change. However, cost-effective methods of extending intervention contact are needed.

Objective: This study investigated whether extended contact via text message was efficacious in supporting long-term weight loss and physical activity and dietary behavior change in breast cancer survivors.

Methods: Following the end of an initial 6-month randomized controlled trial of a telephone-delivered weight loss intervention versus usual care, eligible and consenting intervention participants received a 6-month extended contact intervention via tailored text messages targeting a range of factors proposed to influence the maintenance of behavior change. In this single-group, pre-post designed study, within group changes in weight, moderate-to-vigorous physical activity (Actigraph GT3X+ accelerometers), and total energy intake (2x24 hour dietary recalls) were evaluated from baseline to end of initial intervention (6 months), end of extended contact intervention (12 months), and after a no-contact follow-up (18 months) via linear mixed models. Feasibility of implementation was assessed through systematic tracking of text message delivery process outcomes, and participant satisfaction was assessed through semistructured interviews.

Results: Participants at baseline (n=29) had a mean age of 54.9 years (SD 8.8), body mass index of 30.0 kg/m2 (SD 4.2), and were recruited a mean 16.6 months (SD 3.2) post diagnosis. From baseline to 18 months, participants showed statistically significantly lower mean weight (-4.2 kg [95% CI -6.0 to -2.4]; P<.001) and higher physical activity (mean 10.4 mins/day [95% CI 3.6-17.2]; P=.003), but no significant differences in energy intake (P=.200). Participants received a mean of 8 text messages every 2 weeks (range 2-11) and reported a high rate of satisfaction.

Conclusions:
In comparison to interventions without extended contact, results suggest text message–delivered extended contact may support the attenuation of weight regain and promote the maintenance of physical activity.
Keyword Weight
Physical activity
Diet
Mobile telephone
Intervention
Behavior change
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Public Health Publications
 
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