Table 2.

Individual MCA_V baseline, total response, and kinetics parameters during moderate-intensity exercise

MCA/Subject	BL, cm/s	Amp, cm/s	Tot, cm/s	τ, s	TD, s	MRT, s
Left MCA
Young
1	76.7	11.0	87.7	36.8	21.0	57.8
2	74.0	35.7	109.7	52.8	46.3	99.1
4	65.3	18.4	83.7	30.7	61.8	92.5
6	62.8	14.8	77.6	30.4	50.8	81.2
7	58.1	9.5	67.6	19.3	76.6	95.9
9	68.6	11.9	80.5	20.0	55.8	75.8
10	64.4	9.0	73.4	13.6	56.0	69.6
11	84.7	13.6	98.3	34.6	59.6	94.2
Means	69.3	15.5	84.8	29.8	53.5	83.3
SE	3.1	3.1	4.8	4.4	5.6	5.2
Older
15	37.6	12.4	50.0	35.6	77.2	112.8
18	38.1	5.3	43.4	44.7	58.4	103.1
20	53.6	13.5	67.1	91.3	46.5	137.8
Means	43.1	10.4	53.5	57.2	60.7	117.9
SE	5.2	2.6	7.0	17.3	8.9	10.3
Stroke
201*	37.9
Right MCA
Young
1	68.6	13.0	81.6	44.0	12.1	56.1
2	62.7	25.6	88.3	40.0	55.5	95.5
4	60.6	15.2	75.8	28.5	64.1	92.6
6	52.8	10.0	62.8	29.0	52.1	81.1
7	49.0	7.4	56.4	14.1	63.3	77.4
9	76.5	11.1	87.6	15.7	56.0	71.7
10	65.4	8.4	73.8	12.8	55.0	67.8
11	79.5	16.7	96.2	53.8	60.5	114.3
Means	64.4	13.4	77.8	29.7	52.3	82.1
SE	3.7	2.1	4.7	5.4	5.9	6.5
Older
15	31.7	12.9	44.6	41.2	67.3	108.5
18	46.8	7.2	54.0	58.3	27	85.3
20	55.6	15.2	70.8	76.1	28.3	104.4
Means	44.7	11.8	56.4	58.5	40.9	99.4
SE	7.0	2.4	7.7	10.1	13.2	7.1
Stroke
201*

Data are means ± SE. MCA_V, middle cerebral artery velocity; BL, baseline; Amp, amplitude; Tot, total exercise MCA_V response; τ, tau; TD, time delay; MRT, mean response time.

^*Kinetic parameters could not be modeled for the stroke patient (subject 201).