The Effect of Honey-sweetened Coffee, Black Tea and Green Tea on Some Physiological Parameters
NCT ID: NCT07002307
Last Updated: 2025-06-15
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
70 participants
INTERVENTIONAL
2023-10-17
2023-10-19
Brief Summary
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Does honey-sweetened black tea, green tea, and coffee, respectively, have the ability to influence blood pressure, heart rate, or blood glucose level?
Research will compare honey-sweetened black tea, green tea, and coffee to a placebo (warm water) to see if honey-sweetened black tea, green tea, and coffee work to reduce or increase blood pressure, heart rate, or blood glucose.
Participants will:
Take honey-sweetened black tea, green tea, and coffee, OR plain black tea, green tea, and coffee, OR warm water, one cup a day for 3 days The beverages will be taken at the Physiology laboratory, University of Uyo, and the participants will be observed for 60 minutes, during which their blood pressure, heart rate, and blood glucose level will be measured. This procedure will be repeated for the 3 days of study.
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
PARALLEL
BASIC_SCIENCE
NONE
Study Groups
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Control group
Will receive 250 mL of warm water
Warm water at 35 oC
The placebo for the control group
Coffee group
Will receive 2.25 g of coffee dissolved in 250 mL of hot water
Coffee
Instant coffee, Nescafé Gold Blend, manufactured by Nestlé Coffee Brand, Nestlé Global
Honey-sweetened coffee group
Will receive 2.25 g of coffee plus 20 mL of honey put in 250 mL of hot water
Honey-sweetened coffee
Instant coffee plus raw dark amber honey produced by Apis mellifera adansonii
Green tea group
Will receive 2 g of green tea infuse in 250 mL of hot water
Green tea
Qualitea Natural Green Tea, packed by Qualitea Ceylon (PVT) LTD
Honey-sweetened green tea group
Will receive 2 g of green tea plus 250 mL of honey put in 250 mL of hot water
Honey-sweetened green tea
Green tea plus honey
Black tea group
Will receive 2 g of black tea infuse in 250 mL of hot water
Black tea
Lipton Yellow Label Black Tea
Honey-sweetened black tea group
Will receive 2 g of black tea plus 20 mL of honey put in 250 mL of hot water
Honey-sweetened black tea
Black tea plus honey
Interventions
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Warm water at 35 oC
The placebo for the control group
Coffee
Instant coffee, Nescafé Gold Blend, manufactured by Nestlé Coffee Brand, Nestlé Global
Honey-sweetened coffee
Instant coffee plus raw dark amber honey produced by Apis mellifera adansonii
Green tea
Qualitea Natural Green Tea, packed by Qualitea Ceylon (PVT) LTD
Honey-sweetened green tea
Green tea plus honey
Black tea
Lipton Yellow Label Black Tea
Honey-sweetened black tea
Black tea plus honey
Eligibility Criteria
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Inclusion Criteria
* Non-habitual coffee and tea drinkers who consume coffee, green tea, or black tea 2-5 times in the last two months
* Non-allergic to coffee, green tea, black tea, or honey
* Absence of medication use
* Will refrain from ingesting energy drinks, carbonated beverages, caffeinated beverages, or food for 24 hours before the study and throughout the study periods
* Will not consume anything except water after 11 p.m. during the experimental days Will be available and cooperate throughout the study duration.
Exclusion Criteria
* Blood pressure above 120/80 mmHg and random blood glucose above 125 mg/dL
* Alcohol intake
* Smoking
* Habitual coffee or tea drinker
18 Years
26 Years
FEMALE
Yes
Sponsors
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University of Uyo Teaching Hospital
OTHER
Responsible Party
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Esther Oluwasola Aluko
Principal Investigator (PI)
Principal Investigators
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Esther O Aluko
Role: PRINCIPAL_INVESTIGATOR
University of Uyo
Locations
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Physiology laboratory, Physiology Department, Faculty of Basic Medical Sciences, University of Uyo
Uyo, Akwa Ibom State, Nigeria
Countries
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Provided Documents
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Document Type: Study Protocol, Statistical Analysis Plan, and Informed Consent Form
Other Identifiers
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Uuthuyo
Identifier Type: -
Identifier Source: org_study_id
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