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Using the Smart Underwear Device to Determine a Baseline of Flatus Activity Normalized to Fiber Intake

University of Maryland, College Park · NCT07134543

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Key facts

Compensation
Not posted. Ask the study team before screening.
Who can join
Ages 18+ · All sexes
Healthy volunteers
Accepted
Study type
Observational
Target enrollment
500
US sites recruiting
1
Study start
December 1, 2025
Record last updated
December 23, 2025

Status re-checked against ClinicalTrials.gov within the last 12 hours.

What the study is about

The goal of this observational study is to quantify the typical frequency of flatulence in healthy adults, normalized by fiber intake, using the Smart Underwear device. The study will enroll a maximum of 500 adults across the United States who will wear the device for three consecutive days while continuing their usual daily activities.

The main questions it aims to answer are

  • What is the average frequency of flatus events in a general adult population?
  • How does dietary fiber intake influence flatus frequency and microbiome activity?

Researchers will collect gas sensor data from the Smart Underwear device alongside dietary information logged in a mobile app to assess the relationship between diet and microbiome activity.

Participants will

  • Complete an online eligibility survey, consent form, and background questionnaire.
  • Wear the Smart Underwear device for at least 12 hours per day for three consecutive days.
  • Log all meals with photos using a custom smartphone app.
  • Complete a short post-wear survey about device comfort and usability.

All study procedures will be conducted remotely. Data will be analyzed in de-identified form to evaluate baseline flatulence patterns, normalized to fiber intake, in the general adult population.

Conditions: All Health Backgrounds to Determine a Baseline of Flatus Activity

Eligibility criteria

Copied from the official record. The study team makes the final decision at screening.

Show full criteria

Inclusion Criteria

  • 18 years old or older
  • Lives in the US
  • Is not pregnant or lactating
  • Is willing to wear the Smart Underwear device as instructed in the study procedures

Exclusion Criteria

  • Younger than 18 years old
  • Lives outside the US
  • Is pregnant or lactating
  • Is not willing to wear the Smart Underwear device as instructed in the study procedures

Recruiting US locations

  • University of Maryland Bioscience Research Building

    College Park, MD 20742

    Site contact: Branley Hall, PhD · 301-405-7481 · brantley@umd.edu

Study contacts (from the official record)

  • Brantley Hall, PhD · 5407978040 · brantley@umd.edu
All healthy volunteers studies in Maryland →
Using the Smart Underwear Device to Determine a Baseline of Flatus… (NCT07134543) | Bored Studies