NCT07159152Not yet recruiting
Effects of Coffee Versus Hibiscus Tea Consumption During Prolonged Sitting on Blood Pressure and Heart Rate
Source: ClinicalTrials.gov · Last updated 8 Sept 2025 · Not updated for over 12 months - ask the site whether it is still open
Brief summary (registry, in English)
Modern lifestyles often involve long periods of sitting, which can increase the risk of heart problems, obesity, and other health issues. Diet also plays a key role in heart health. Coffee and hibiscus tea are two common beverages, but their effects during prolonged sitting are not well understood. This study will examine how drinking coffee versus hibiscus tea affects blood pressure, heart rate, and heart rate variability in men and women during extended periods of sitting. Participants (30 in total: 15 women and 15 men) will take part in a randomized crossover study, meaning each person will try both beverages at different times. Data will be collected using questionnaires, body measurements, and devices to measure heart rate, blood pressure, and heart rate variability. The goal is to better understand how these drinks influence heart health during sedentary behavior.
- Status (registry)
- Not yet recruiting
- Study type
- Interventional
- Enrollment
- 30 (estimated)
- First submitted
- 23 Aug 2025
- Start date
- 1 Sept 2025
- Primary completion date
- 1 Feb 2026
- Lead sponsor
- King Saud University
- Diseases
- High blood pressure
- NCT number
- NCT07159152
What you commit to
- Study type: Interventional
- Planned participants: 30
- From 1 Sept 2025 to the primary completion date, 1 Feb 2026
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Other illness
- Known allergy or hypersensitivity to hibiscus or coffee, as participants will consume these beverages during the study.
- Current use of medications that could influence blood pressure, heart rate, or heart rate variability, including antihypertensive, chronotropic, or vasoactive drugs.
- Any medical condition or health issue that may interfere with safe participation or affect study measurements.
Who the study is looking for
- Age between 18 and 35 years.
- Normal to elevated blood pressure (systolic \<130 mmHg and diastolic \<80 mmHg) and normal resting heart rate (60-100 bpm), ensuring selection of healthy adults and minimizing confounding factors.
- Generally healthy, without chronic or acute medical conditions, to reduce external influences on study outcomes.
- Physically inactive, not meeting current physical activity guidelines, as the study targets sedentary individuals.
Age in the registry: 18 years to 35 years · Sex: All · Accepts healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Princess Nourah University Lifestyle Center Coordinator of this site? Confirm its status | Riyadh | Saudi Arabia | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.