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NCT04440553 · ClinicalTrials.gov registry record · NA
A Mobile App to Increase Physical Activity in Students
A NA study, sponsored by University of California, Berkeley.
- Completed
- Registry status
- NA
- Development phase
- 103
- Enrollment target
NCT04440553: Completed NA study, sponsored by University of California, Berkeley.
NCT04440553 is a NA study that has completed, run by University of California, Berkeley. The registered enrollment target is 103 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (93% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04440553, a NA study, has completed, sponsored by University of California, Berkeley.
- COMPLETED
- Registry status
- NA
- Development phase
- 103 participants
- Enrollment target
Study Summary
Background: Insufficient physical activity is one of the leading risk factors of death worldwide. Behavioral treatments delivered via smartphone apps, hold great promise for helping people engage in healthy behaviors including becoming more physically active. However, similar to 'face-to-face' treatments, effects typically do not seem to be sustained over longer periods of time. Methods: the investigators developed a smartphone application that uses different types of motivational and feedback text-messaging to motivate individuals to increase physical activity. Here, participants are randomized to either receive messages by a uniform random distribution (n=50), or chosen by a reinforcement learning algorithm (n=50), which learns from daily participant data to personalize the frequency and type of motivation of messages. Objectives: In the current study, the investigators examine this application in undergraduate and graduate students at the University of California, Berkeley. The investigators compare whether participants in the uniform random or adaptive group have higher increases in steps during the study. The investigators also examine the effect of the different types of messages on step counts. Further the investigators assess the influence of patient characteristics, such as socio-demographic, psychological questionnaire scores and baseline physical activity on the effect of the adaptive arm and effectiveness of the messages. Finally, the investigators assess participant qualitative feedback on the text-messaging program, through feedback provided via questionnaires, text-message and phone interviews.
Primary Outcome
Change in daily step counts (today's steps count minus yesterday's steps count)
Interventions
- BEHAVIORAL Uniform random message delivery
- BEHAVIORAL Reinforcement learning message delivery
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 103 participants |
| Start Date | 2019-09-12 |
| Est. Completion | 2019-12-20 |
| Phase | NA |
What the finished NCT04440553 record still lists
NCT04440553 is an interventional study that assigns participants to a tested intervention. The registered 103 participants enrollment target is mid-sized for trials with a published cap, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (93% lower).
The record links to 0 conditions, and to 2 interventions - of which Uniform random message delivery is the first listed.
NCT04440553 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT04440553 about?
NCT04440553 is a clinical study titled "A Mobile App to Increase Physical Activity in Students". Background: Insufficient physical activity is one of the leading risk factors of death worldwide. Behavioral treatments delivered via smartphone apps, hold great promise for helping people engage in healthy behaviors including becoming more physically active. However, similar to 'face-to-face' treat...
What is the current status of trial NCT04440553?
This trial is currently completed. It is a NA study. The enrollment target is 103 participants. The study started on 2019-09-12. Estimated completion is 2019-12-20.
What interventions are being tested in trial NCT04440553?
The interventions under investigation include: Uniform random message delivery (BEHAVIORAL), Reinforcement learning message delivery (BEHAVIORAL).
Who is sponsoring clinical trial NCT04440553?
This trial is sponsored by University of California, Berkeley, which has 72 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT04440553's enrollment target sits among peer trials
103 837th of 2000 higher than 1,164 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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