[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100605179":3},{"organization":4,"armGroups":7,"interventions":19,"overallOfficials":30,"centralContacts":35,"locations":45,"responsibleParty":60,"collaborators":63,"id":65,"slug":66,"hasResults":67,"nctId":68,"briefTitle":69,"officialTitle":69,"acronym":25,"eligibilityCriteria":70,"healthyVolunteers":71,"sex":72,"minAge":73,"maxAge":74,"enrollmentInfo":75,"targetDuration":25,"studyType":78,"phases":79,"briefSummary":81,"conditions":82,"keywords":84,"overallStatus":92,"whyStopped":25,"lastUpdateSubmitDate":93,"lastUpdatePostDateStruct":94,"startDateStruct":97,"completionDateStruct":99,"leadSponsor":101,"locationsCount":102},{"fullName":5,"class":6},"King Saud University","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Coffee plus prolonged sitting protocol","EXPERIMENTAL","all participants in this group follow the coffee protocol",[13],"Dietary Supplement: Coffee",{"label":15,"type":10,"description":16,"interventionNames":17},"Hibiscus drink plus prolonged sitting protocol","all participants in this group follow the hibiscus drink protocol",[18],"Dietary Supplement: Hibiscus drink",[20,26],{"type":21,"name":22,"description":23,"armGroupLabels":24,"otherNames":25},"DIETARY_SUPPLEMENT","Coffee","Participants will consume 3 cups of Arabica coffee (Guatemalan origin), providing a total of 400 mg of caffeine. Each cup is prepared with 6% coffee grounds per 100 mL of water, brewed at 90°C for 6 minutes using an electric drip coffee maker, yielding 100.8 mg caffeine per 100 mL. Immediately following coffee consumption, participants will engage in uninterrupted sitting for 3 hours. Blood pressure, heart rate, and other study questionnaires will be measured at baseline (before coffee), 1 hour after coffee intake, and hourly during the 3-hour sitting period.",[9],null,{"type":21,"name":27,"description":28,"armGroupLabels":29,"otherNames":25},"Hibiscus drink","Participants will consume 3 servings of hibiscus leaves tea per day, each serving containing 1.25 g of dried hibiscus leaves, totaling 3.75 g per session. The tea will be prepared by steeping the leaves in 240 mL of boiling water (100°C) for 10 minutes. Immediately after consuming the hibiscus tea, participants will engage in uninterrupted sitting for 3 hours. Blood pressure, heart rate, and other study questionnaires will be measured at baseline (before tea), 1 hour after tea intake, and hourly during the 3-hour sitting.",[15],[31],{"name":32,"affiliation":33,"role":34},"Hadeel M Almalki, BSc","Princess Nourah Bint Abdulrahman University","PRINCIPAL_INVESTIGATOR",[36,41],{"name":37,"role":38,"phone":39,"phoneExt":25,"email":40},"Abdullah B Alansare, PhD","CONTACT","+966555061381","aalansare@ksu.edu.sa",{"name":42,"role":38,"phone":43,"phoneExt":25,"email":44},"Mohanad S AlJubairi, MSc","+966553899006","MSAljabiri@pnu.edu.sa",[46],{"facility":47,"status":25,"city":48,"state":25,"zip":49,"country":50,"countryCode":51,"cosmosGeoPoint":52,"geoPoint":57,"contacts":58},"Princess Nourah University Lifestyle Center","Riyadh","80200","Saudi Arabia","SA",{"type":53,"coordinates":54},"Point",[55,56],46.72185,24.68773,{"lat":56,"lon":55},[59],{"name":42,"role":38,"phone":43,"phoneExt":25,"email":44},{"type":34,"investigatorFullName":61,"investigatorTitle":62,"investigatorAffiliation":5,"oldNameTitle":25,"oldOrganization":25},"Abdullah Bandar Alansare","Assistant Professor of Exercise Physiology",[64],{"name":33,"class":6},"100605179","effects-of-coffee-versus-hibiscus-tea-consumption-during-prolonged-sitting-on-blood-pressure-and-heart-rate-100605179",false,"NCT07159152","Effects of Coffee Versus Hibiscus Tea Consumption During Prolonged Sitting on Blood Pressure and Heart Rate","Inclusion Criteria:\n\n* Age between 18 and 35 years.\n* Normal to elevated blood pressure (systolic \\\u003C130 mmHg and diastolic \\\u003C80 mmHg) and normal resting heart rate (60-100 bpm), ensuring selection of healthy adults and minimizing confounding factors.\n* Generally healthy, without chronic or acute medical conditions, to reduce external influences on study outcomes.\n* Physically inactive, not meeting current physical activity guidelines, as the study targets sedentary individuals.\n\nExclusion Criteria:\n\n* Known allergy or hypersensitivity to hibiscus or coffee, as participants will consume these beverages during the study.\n* Current use of medications that could influence blood pressure, heart rate, or heart rate variability, including antihypertensive, chronotropic, or vasoactive drugs.\n* Any medical condition or health issue that may interfere with safe participation or affect study measurements.",true,"ALL","18 Years","35 Years",{"count":76,"type":77},30,"ESTIMATED","INTERVENTIONAL",[80],"NA","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.\n\nThis 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.\n\nParticipants (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.\n\nThe goal is to better understand how these drinks influence heart health during sedentary behavior.",[83],"Hypertension",[85,86,87,88,89,90,91],"hibiscus drink","coffee","prolonged sitting","sedentary behavior","cardiovascular health","vascular function","cardiovascular regulation","NOT_YET_RECRUITING","2025-08-28",{"date":95,"type":96},"2025-09-08","ACTUAL",{"date":98,"type":77},"2025-09-01",{"date":100,"type":77},"2026-03-01",{"name":5,"class":6},1]