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Am J Health Behav. 2016 Jul;40(4):472-83. doi: 10.5993/AJHB.40.4.9.

Texting to Increase Adolescent Physical Activity: Feasibility Assessment.

Author information

1
USDA/ARS Children's Nutrition Research Center, Baylor College of Medicine, Houston, TX, USA. dit@bcm.edu.
2
USDA/ARS Children's Nutrition Research Center, Baylor College of Medicine, Houston, TX, USA.
3
Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington, USA.
4
Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.
5
Centre for Exercise, Nutrition & Health Sciences, School for Policy Studies, University of Bristol, Bristol, UK.
6
Department of Physical Education and Recreation, University of Alberta, Edmonton, AB, Canada.

Abstract

OBJECTIVE:

Feasibility trials assess whether a behavior change program warrants a definite trial evaluation. This paper reports the feasibility of an intervention consisting of Self Determination Theory-informed text messages, pedometers, and goal prompts to increase adolescent physical activity.

METHODS:

A 4-group randomized design with baseline and immediate post-study assessments was used. Groups (pedometer; pedometer + goal prompt; pedometer + goal prompt + theory-informed texts; no-treatment control) were systematically varied to assess the additive effect of intervention components on objectively measured physical activity (ie, ActiGraph). The primary outcome of the 12-week intervention was program feasibility. Changes in average daily step counts and minutes of moderate-to-vigorous physical activity also were examined. Post-intervention research with a subset of participants examined program reactions.

RESULTS:

Participants (N = 160) were evenly split by sex, mostly 14-15 years old, and of diverse race/ethnicity. Feasibility criteria were met. The attrition rate was less than 2%. Modest increases in average daily step counts and moderate-to-vigorous physical activity were observed in all groups except the control group. Participants reported positive reactions to the intervention.

CONCLUSIONS:

An intervention consisting of pedometers, theory-informed texts, and goal prompts, is a feasible and acceptable method for promoting physical activity to adolescents.

TRIAL REGISTRATION:

ClinicalTrials.gov NCT01482234.

PMID:
27338994
PMCID:
PMC4922515
DOI:
10.5993/AJHB.40.4.9
[Indexed for MEDLINE]
Free PMC Article

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