Key result
Green tea and black tea were equally effective in improving endothelial function, with no significant difference in flow-mediated dilation between the two beverages (baseline-adjusted difference 0.66%, p=0.36).
Why the study?
Does consumption of green or black tea improve endothelial function in healthy women compared to water?
Population
Bovine aortic endothelial cells (BAEC), rat aortic rings, and 21 healthy women
Comparison
Consumption of green tea and black tea vs Water (control)
Design
Other
Follow-up
2 hours
Authors
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Acute tea intake may equally improve endothelial function in healthy women; leaves open confirmation versus water in randomized trials.
RCT (n=21)
Single-blind
Cross-over
No
Does consumption of green or black tea improve endothelial function in healthy women compared to water?
Mean Difference: 0.66 (95% CI -0.76–2.09)
Absolute Event Rate: 10.2% vs 9.1%
p-value: p=0.36
Both green and black tea are equally effective in acutely improving endothelial function in healthy women.
Jochmann et al. (2007) conducted an RCT in Healthy (n=21). Green tea vs. Black tea was evaluated on Baseline-adjusted difference in flow-mediated dilation (FMD) at 2 hours (MD 0.66%, 95% CI -0.76 to 2.09, p=0.36). Green tea and black tea were equally effective in improving endothelial function, with no significant difference in flow-mediated dilation between the two beverages (baseline-adjusted difference 0.66%, p=0.36).
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