Fitbit One and Text Messaging Prompts to Promote Physical Activity in Overweight/Obese Adults (TXT2BFIT)

University of California San Diego

Status: Completed

Conditions: Obesity; Health Behavior

Treatments: Behavioral: SMS Text Messages & Fitbit One; Behavioral: Fitbit One Only

Study type: Interventional

Funder types: Other

Identifiers

NCT02188875

130024

Details and patient eligibility

About

Previous studies suggest self-regulatory techniques including self-monitoring, and SMS text-messaging as an intervention modality, can modify health behaviors including physical activity (PA). The primary purpose of this study was to examine change in objectively measured PA in a randomized controlled pilot trial that tested a wearable sensor/device (Fitbit One) for self-monitoring and SMS text-messaging prompts to promote PA in overweight/obese adults. In a 2-group design, 67 participants were provided the Fitbit One and half were randomized to receive 3 daily SMS-based PA prompts. A Fitbit One was provided to facilitate self-monitoring with a wearable tracker for instant feedback and website of daily PA summaries. Outcome measures were number of steps and minutes of PA by intensity-level using two accelerometers: Actigraph GT3X+ (primary) at baseline and 6-week follow-up and Fitbit One (secondary) at baseline and weeks 1-6. The main hypothesis was that text messaging plus the Fitbit One would show a greater increase in steps and minutes of PA compared to only the Fitbit One at 6-week follow-up.

Enrollment: 67 patients

Sex: All

Ages: 18 to 69 years old

Volunteers: Accepts Healthy Volunteers

Inclusion and exclusion criteria

Inclusion Criteria:

• 18-69 years of age
• overweight or obese (otherwise healthy)
• does not meet recommended levels of PA (>150 min/wk of MVPA)
• owns a personal mobile phone and able to use SMS text-messaging
• owns a personal computer, has access to Internet, able to operate the Fitbit One
• fluent in English

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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67 participants in 2 patient groups

SMS Text Messages & Fitbit One

Experimental group

Description:

All study participants were provided a Fitbit One to facilitate self-monitoring of PA. Those who were randomly assigned to the intervention group were asked to indicate 3 preferred times of the day to receive text message prompts to do PA throughout the 6-week study period.

Treatment:

Behavioral: SMS Text Messages & Fitbit One

Fitbit One Only

Active Comparator group

Description:

An active control group was also provided the Fitbit One to facilitate self-monitoring of PA throughout the 6-week study period.

Treatment:

Behavioral: Fitbit One Only