Break It Up: A Study Evaluating Breaking Up Daily Sedentary Behavior in Youth
Public ClinicalTrials.gov record NCT03223649. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
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Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Background: Some studies have found that people can better process sugars when they take walking breaks. Studies have also found that children's attention and memory may improve after exercise. It is not known if short walking breaks have the same effects. Researchers want to study if breaking up sitting with walking for 6 days helps children s bodies use sugars and improves concentration. Objectives: To learn if breaking up sedentary (low-activity) time with short walking breaks over 6 days affects how children s bodies use sugar. To learn if breaking up sedentary time changes children s attention, memory, feelings, activity, or eating. Eligibility: Children ages 7-11 in general good health Design: Participants will be screened with: * Medical history * Physical exam * Fasting blood tests. On 2 out of 7 total study visits, participants cannot eat or drink after 10 p.m. the night before. * Full-body X-ray * EKG (Electronic signals that record heart function through stickers) * Treadmill exercise. Heart, blood pressure, and oxygen will be monitored. * Questions about the child s health, socialization, and activity, and parent s education and economic status * Picture vocabulary test * Dietician meeting (Questions about eating habits) Participants will have visits on 6 consecutive days. Over that time, they will wear 2 devices to monitor blood sugar and activity (even while at home). Participants will have 5 after-school visits. These include: * Health check * Snack plus food for the next 24 hours * Activity monitored * 3-hour sitting tests. Participants will do non-active things. Some will have 3-minute walks every 30 minutes. * Cognitive tests and questions about mood and anxiety are given on days #1 \& 5. Participants will fast before the last visit in the morning. They will have: * 9 blood draws by IV catheter. Participants will drink sugar water. * Sitting test * Activity monitored * Meal (food buffet)
Study identification
- NCT ID
- NCT03223649
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Lead sponsor
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
- NIH
- Enrollment
- 129 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 7 Years to 11 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jul 25, 2017
- Primary completion
- Jun 25, 2020
- Completion
- Feb 22, 2021
- Last update posted
- Jun 10, 2021
2017 – 2021
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| National Institutes of Health Clinical Center | Bethesda | Maryland | 20892 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03223649, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jun 10, 2021 · Synced Sep 3, 2026
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The complete protocol, eligibility criteria, and contact information for NCT03223649 live on ClinicalTrials.gov.