This trial is active, not recruiting.

Condition physical activity
Treatment mobile phone-based physical activity program
Sponsor University of California, San Francisco
Collaborator National Heart, Lung, and Blood Institute (NHLBI)
Start date October 2012
End date May 2014
Trial size 30 participants
Trial identifier NCT01461707, 11-06992, 3R01HL104147-02S1


Obesity among women of childbearing age and excessive weight gain during pregnancy are prevalent and steadily increasing health care issues. Regular physical activity is recommended to maintain healthy weight gain for pregnant women, however, a majority of pregnant women are sedentary. The investigators propose to conduct a pilot study to estimate the potential efficacy of a mobile phone based physical activity intervention in 30 physically inactive pregnant women.

United States No locations recruiting
Other countries No locations recruiting

Study Design

Allocation randomized
Intervention model parallel assignment
Masking single blind (subject)
Primary purpose prevention
Participants in the group will receive a study mobile phone application and an activity monitor
mobile phone-based physical activity program
Participants in the intervention group will receive an activity monitor and the mobile phone based physical activity intervention.
(No Intervention)
Participants in the group will receive an activity monitor

Primary Outcomes

physical activity monitor measured steps
time frame: 12 weeks

Secondary Outcomes

7-Day Physical Activity Recall
time frame: 12 weeks

Eligibility Criteria

Female participants from 18 years up to 40 years old.

Inclusion Criteria: - pregnant, gestational week (10-20 weeks) - pre-pregnancy BMI ≥ 18.5 kg•m2 - physically inactive at work and during leisure time - intent to be physically active - access to a home telephone or a mobile phone - have a personal computer access - ability to communicate (speak and read) in English. Exclusion Criteria: - known medical or obstetric complication that restricts physical activity - history of eating disorders - current participation in lifestyle modification programs - history of bariatric surgery.

Additional Information

Official title A Pilot Study of a Mobile Phone-Based Physical Activity Program in Pregnant Women
Principal investigator JiWon Choi, PhD
Trial information was received from ClinicalTrials.gov and was last updated in April 2014.
Information provided to ClinicalTrials.gov by University of California, San Francisco.