Table 2.

Cerebrovascular and hemodynamic variables during the Stroop color and word test

Stroop Color and Word Test	Young Adults	Older Adults	P Value (Effect Size)
MAP, mmHg
Control
Baseline	90 ± 13	94 ± 11	0.152 (0.27)
Stroop	92 ± 12	98 ± 13	0.051 (0.50)
Indomethacin
Baseline	91 ± 12	96 ± 13	0.121 (0.36)
Stroop	92 ± 13	98 ± 15	0.093 (0.41)
PP, mmHg
Control
Baseline	74 ± 16	73 ± 12	0.445 (0.04)
Stroop	76 ± 18	75 ± 11	0.415 (0.06)
Indomethacin
Baseline	73 ± 14	76 ± 11	0.208 (0.25)
Stroop	74 ± 14	76 ± 13	0.379 (0.09)
HR, beats/min
Control
Baseline	60 ± 7	59 ± 8	0.231 (0.22)
Stroop	68 ± 10	67 ± 10	0.387 (0.09)
Indomethacin
Baseline	55 ± 8	55 ± 8	0.468 (0.02)
Stroop	60 ± 9	62 ± 9	0.269 (0.19)
MCAv, cm/s
Control
Baseline	60 ± 13	50 ± 16	0.017 (0.66)
Stroop	63 ± 14	53 ± 17	0.027 (0.60)
Indomethacin
Baseline	42 ± 8*	37 ± 9*	0.016 (0.67)
Stroop	44 ± 9*	38 ± 9*	0.027 (0.60)
CVCi, cm/s/mmHg
Control
Baseline	0.68 ± 0.17	0.54 ± 0.18	0.007 (0.78)
Stroop	0.70 ± 0.19	0.55 ± 0.18	0.007 (0.77)
Indomethacin
Baseline	0.47 ± 0.11*	0.39 ± 0.12*	0.012 (0.70)
Stroop	0.48 ± 0.12*	0.40 ± 0.12*	0.015 (0.68)
Cerebral PI, AU
Control
Baseline	0.71 ± 0.12	0.76 ± 0.10	0.054 (0.50)
Stroop	0.70 ± 0.12	0.74 ± 0.11	0.126 (0.35)
Indomethacin
Baseline	0.86 ± 0.16*	0.89 ± 0.13*	0.223 (0.23)
Stroop	0.87 ± 0.17*	0.89 ± 0.14*	0.416 (0.08)

Values are expressed as means ± SD. Cerebral PI, cerebral pulsatility index; CVCi, cerebrovascular conductance index; HR, heart rate; MAP, mean arterial blood pressure; MCAv, middle cerebral artery blood velocity; PP, pulse pressure. P value in bold indicates a significant difference between young and older adults at baseline or in response to the Stroop color and word test (independent-samples t test or Wilcoxon rank-sum test). *P < 0.05 significantly different vs. control at baseline or in response to the Stroop color and word test (dependent-samples t test or Wilcoxon signed-rank test).