. 2014 Apr 17;116(12):1614–1622. doi: 10.1152/japplphysiol.01266.2013

Table 1.

Absolute and normalized point estimates of the power spectrum densities of MAP, MCAv, and PCAv during the squat-stand maneuvers for the three interventions

	No Intervention	Indomethacin	Hypocapnia
Squat-stand, 0.05 Hz
MAP power, (mmHg)²/Hz	37,884 ± 17,586	29,552 ± 14,488	27,741 ± 12,256
MAP power, %²/Hz	51,498 ± 30,281	47,176 ± 44,840	50,710 ± 34,557
MCAv power, (cm/s)²/Hz	18,617 ± 9,625	5,382 ± 4,231^*	5,896 ± 4,882^*
MCAv power, %²/Hz	58,312 ± 27,093	27,218 ± 18,835^*	28,121 ± 20,516^*
PCAv power, (cm/s)²/Hz	10,043 ± 5,253	3,518 ± 2,661^*	2,244 ± 2,979^*
PCAv power, %²/Hz	50,626 ± 23,048	21,982 ± 16,680^*	14,478 ± 17,027^*
Squat-stand, 0.10 Hz
MAP power, (mmHg)²/Hz	24,005 ± 9,999	21,161 ± 12,534	18,916 ± 10,554
MAP power, %²/Hz	32,417 ± 22,947	29,684 ± 28,311	29,080 ± 22,642
MCAv power, (cm/s)²/Hz	21,247 ± 11,263	11,339 ± 7,820^*	7,860 ± 4,567^*
MCAv power, %²/Hz	60,262 ± 22,152	43,819 ± 21,599^*	39,642 ± 27,029^*
PCAv power, (cm/s)²/Hz	10,989 ± 5,357	5,651 ± 3,838	2,637 ± 2,098^*
PCAv power, %²/Hz	48,473 ± 20,166	36,269 ± 21,913	16,229 ± 13,078^*

Values are means ± SD.

MAP, mean arterial pressure; MCAv, middle cerebral artery velocity; PCAv, posterior cerebral artery velocity.

Statistical significance was set at P < 0.05.

Significance from no intervention. †Significance from the indomethacin intervention.