From: The effect of an apple polyphenol extract rich in epicatechin and flavan-3-ol oligomers on brachial artery flow-mediated vasodilatory function in volunteers with elevated blood pressure
Apple extract
Placebo
First visit
Last visit
N
58
56
59
Mean
2.474
2.873
0.004
0.001
SD
1.795
2.001
0.024
0.009
min
0.000
−0.004
−0.024
−0.030
max
7.144
8.391
0.167
0.058