Table 4.

Power spectrum densities and transfer function of forced oscillations in mean arterial pressure and cerebral blood flow velocity during squat–stand manoeuvres

	rIPC + exercise		rIPC only		LMM
	Week 0	Week 8	Week 0	Week 8	Condition
0.05 Hz
Power spectrum
BP power (mmHg2)	69.7 ± 31.7	78.4 ± 43.2	73.3 ± 32.4	78.2 ± 42.9	0.86
MCAv power (cm/s2)	40.1 ± 25.5	42.2 ± 24.6	35.1 ± 31.43	32.3 ± 26.6	0.19
Transfer function
Gain (cm s mmHg)	0.51 ± 0.15	0.49 ± 0.15	0.52 ± 0.10	0.50 ± 0.12	0.94
Ngain (%.mmHg−1)	0.99 ± 0.36	0.97 ± 0.23	0.99 ± 0.16	1.01 ± 0.08	0.80
Phase (radians)	0.94 ± 0.47	0.97 ± 0.36	1.01 ± 0.30	1.01 ± 0.08	0.48
Coherence	0.92 ± 0.05	0.91 ± 0.06	0.82 ± 0.09	0.85 ± 0.10	0.50
0.10 Hz
Power spectrum
BP power (mmHg2)	111 ± 79.5	113 ± 87	116 ± 108	111 ± 99	0.91
MCAv power (cm/s2)	43.1 ± 36	40.3 ± 33	45.6 ± 29	41.5 ± 32	0.98
Transfer function
Gain (cm s mmHg)	0.66 ± 0.15	0.68 ± 0.13	0.62 ± 0.24	0.63 ± 0.20	0.85
Ngain (%.mmHg−1)	1.18 ± 0.30	1.34 ± 0.23	1.25 ± 0.29	1.23 ± 0.17	0.40
Phase (radians)	0.40 ± 0.14	0.42 ± 0.19	0.49 ± 0.17	0.46 ± 0.18	0.52
Coherence	0.72 ± 0.07	0.72 ± 0.08	0.72 ± 0.04	0.71 ± 0.08	0.91

Data presented as means ± SD

rIPC remote ischemic preconditioning, BP blood pressure, MCAv middle cerebral artery velocity, LMM linear mixed model