TABLE 3.

Blood pressure, cerebral artery blood velocity, and indices of static cerebral autoregulation during static lower-body negative pressure before and 3 h after beetroot juice (BRJ) consumption.

Variable	PRE-BRJ	POST-BRJ	P-value	Cohen’s d
MAP (mmHg)	92 (86, 99)	91 (85, 98)	0.642	0.117
MCAv (cm/s)	75 (66, 84)	72 (62, 82)	0.123	0.232
Coherence (a.u.)
0.00–0.50 Hz	0.58 (0.51, 0.65)	0.60 (0.50, 0.70)	0.598	0.168
0.02–0.07 Hz	0.49 (0.38, 0.60)	0.47 (0.33, 0.60)	0.689	0.166
0.07–0.20 Hz	0.72 (0.63, 0.82)	0.71 (0.62, 0.81)	0.753	0.088
0.20–0.50 Hz	0.55 (0.44, 0.65)	0.58 (0.45, 0.71)	0.514	0.216
Phase (degrees)
0.00–0.50 Hz	9 (2, 16)	11 (5, 16)	0.568	0.198
0.02–0.07 Hz	55 (35, 76)	61 (45, 77)	0.585	0.235
0.07–0.20 Hz	40 (30, 49)	32 (24, 40)	0.104	0.660
0.20–0.50 Hz	−11 (−24, 2)	−9 (−17, −1)	0.728	0.127
Gain (cm/s/mmHg)
0.00–0.50 Hz	1.02 (0.86, 1.19)	1.06 (0.87, 1.26)	0.574	0.171
0.02–0.07 Hz	0.63 (0.47, 0.78)	0.68 (0.51, 0.85)	0.271	0.249
0.07–0.20 Hz	1.07 (0.85, 1.31)	0.99 (0.82, 1.16)	0.113	0.354
0.20–0.50 Hz	1.08 (0.88, 1.27)	1.16 (0.89, 1.43)	0.470	0.276

Data presented are means with 95% confidence intervals throughout the duration of the protocol (7 min). MAP, mean arterial pressure; MCAv, middle cerebral artery blood velocity; mmHg, millimeters of mercury; cm/s, centimeters per second; Hz, hertz; a.u., arbitrary units; cm/s/mmHg, centimeters per second per millimeters of mercury.