Journal
PREVENTIVE MEDICINE
Volume 51, Issue 3-4, Pages 287-289Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ypmed.2010.06.006
Keywords
Mobile phone; Physical activity; Sedentary lifestyle; Women; Body mass index; Self-efficacy; Innovation
Funding
- NIH NICHD/ORWH [5K12 HD052163, 5K23NR011454]
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Objectives. This uncontrolled pilot study assessed changes in pedometer-measured step counts and self-reported physical activity during a 3-week mobile phone-based intervention. We also explored whether age, BMI, and psychosocial factors were associated with changes in step counts. Methods. Forty-one sedentary adult women in San Francisco, California were asked to report their pedometer steps using a study-supplied mobile phone from June to September 2008. In the second and third weeks, daily prompts delivered by the mobile phone encouraged participants to increase steps by 20% from the previous week Results. Mean age was 48 years. Average daily total steps increased by approximately 800 or 15% over three weeks (p < 0.001). Lower BMI, no antidepressant use, and lower self-reported health status were associated with higher step counts at baseline. Improvements in self-reported will-power were associated with increases in step counts (p < 0.001). Neither age (p = 0.55) nor BMI (p = 0.13) was significantly associated with changes in activity over the 3 weeks. Conclusions. The intervention appeared to motivate sedentary women to increase their physical activity. A randomized controlled clinical trial is warranted and feasible. (C) 2010 Elsevier Inc. All rights reserved.
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