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Evaluating PEARL - a Personalized Exercise Assistant Using Reinforcement Learning (Walkmate Study)

NCT07783724 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 13463

Last updated 2026-08-25

No results posted yet for this study

Summary

To evaluate the impact of two personalized nudging strategies delivered as pop-up notifications via the Fitbit app on user step count. Specifically, to personalize the following parameters of the pop-up notification system: message content, and timing (hr of the day).

Conditions

  • Sedentary Lifestyle

Interventions

BEHAVIORAL

Mobile App Push Notification (Random Selection)

Participants use Fitbit devices, with the addition of randomly deployed nudge interventions (random timing and theme).

BEHAVIORAL

Mobile App Push Notification (Behavior Science Heuristics)

Participants use Fitbit devices, with the addition of nudges deployed based on behavior science heuristics.

BEHAVIORAL

Mobile App Push Notification (RL)

Participants use Fitbit devices, with the addition of nudges deployed based on a reinforcement learning algorithm.

Sponsors & Collaborators

  • Google LLC.

    collaborator INDUSTRY

  • Fitbit LLC

    lead INDUSTRY

Principal Investigators

  • James A Taylor, MD · Google LLC.

Study Design

Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
22 Years
Max Age
60 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2024-02-26
Primary Completion
2024-08-26
Completion
2024-08-26

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07783724 on ClinicalTrials.gov