Near-Infrared Spectroscopy Is Promising to Detect Iliac Artery Flow Limitations in Athletes: A Pilot Study

Table 2

Absolute TSI values are expressed in % and amplitude changes of O2Hb in μM. Kinetic values are expressed in seconds; τ, time constant of the monoexponential model; delay, Time delay; MRT, mean response time; HVT: Half value time; represents average values with s.d. from 9 healthy athletes with, respectively, 18 legs in CP; ^∗Most affected leg; ^∗∗Patient leg slipped of the resting platform resulting in inaccurate data; ^∗∗∗No (kinetic) recovery response present.

	Absolute (TSI) and amplitude changes (O2Hb)
	Healthy top cyclist					Patient: Subtle kinking				Patient: Intravascular lesion				Patient: severe kinking
	NP		CP			NP		CP		NP		CP		NP		CP
	Left	Right	Left	Right	n=18^†	Left^∗	Right	Left^∗	Right	Left^∗	Right	Left^∗	Right	Left^∗	Right	Left^∗	Right
	55.7	56.5	59.7	58.3	61.1 (3.8)^†	56.1	55.2	50.4	53.5	61.4	62.7	57.6	60.6	59.8	63.7	64.8	63.3
	40.6	36.7	40.9	37.2	42.3 (8.3)^†	34.2	31.9	26.6	29.6	30.8	47.1	29.9	46.6	43.7	47.6	44.0	46.1
	68.6	62.3	66.9	67.4	68.7 (2.7)^†	70.8	67.3	73.5	71.4	72.2	69.4	67.6		68.0	67.9		67.9
	15.1	19.8	18.8	21.1	26.3 (8.1)^†	21.9	23.3	23.8	23.9	30.6	15.6	27.7	14	16.1	16.1	20.8	17.2
	28	25.6	26	30.2	23.8 (13.0)^†	36.6	35.4	46.9	41.8	41.4	22.3	37.7		24.3	20.3		21.8
O2	-15.7	-21.9	-18.5	-19.6	-18.7 (6.7)^†	-10.6	-15.5	-14.0	-15.1	-31.8	-28.7	-23.2	-7.6	-27.0	-24.9	-22.4	-19.6
O2	20.2	15.3	6.9	5.6	9.2 (7.0)^†	25.0	21.4	18.2	21.0	4.9	-4.9	10.3		-2.2	0.9		-7.7
O2	35.8	37.2	25.3	25.3	27.7 (9.4)^†	35.6	36.9	32.2	36.1	36.7	23.8	33.5		24.8	25.8		12.0
	Kinetic values
	Healthy top cyclist					Patient: Subtle kinking				Patient: Intravascular lesion				Patient: severe kinking
	NP		CP			NP		CP		NP		CP		NP		CP
	Left	Right	Left	Right	n=18^†	Left^∗	Right	Left^∗	Right	Left^∗	Right	Left^∗	Right	Left^∗	Right	Left^∗	Right
	14.7	14.9	11.4	9.2	15 (4.0)^†	30.2	30.8	44.0	27.5	150.1	18.0	183.2		26.4	28.3		78.7
	-1.2	-3.7	12.1	10.3	11 (8.1)^†	50.1	41.8	69.8	19.7	106.6	13	269.9		-7	-4.6		32
	13.5	11.2	23.5	19.5	26 (11.2)^†	80.3	72.6	113.8	47.2	256.7	31.0	453.1		19.4	23.7		110.7
	0.980	0.975	0.994	0.987	0.989 (0.010)^†	0.997	0.996	0.997	0.992	0.980	0.997	0.995		0.987	0.993		0.921
	11.6	7.3	20.1	18.0	21 (8.4)^†	65.0	49.5	82.2	36.5	173.9	24.8	345.3		22.2	18.3		91.8
O2Hbτ	25.9	26.2	18.6	15.1	20.5 (3.8)^†	43.9	37.5	66.9	43.3	747.0	31.3	554.2		60.3	28.5		64.8
O2	-1.2	-1.7	11.0	9.8	11 (6.9)^†	47.6	41.9	68.5	19.3	105.0	10.2	323.8		-4.6	-1.6		31.2
O2	24.7	24.5	29.6	24.9	31.5 (8.6)^†	91.5	79.4	135.4	62.6	852.0	41.5	878.0		55.7	26.9		96.0
O2	0.997	0.996	0.987	0.973	0.991 (0.005)^†	0.996	0.990	0.998	0.998	0.955	0.987	0.976		0.988	0.930		0.913
O2	15.8	17.5	26.0	20.0	24.6 (6.5)^†	68.0	51.3	94.5	42.6	223.1	31.1	399.3		42.5	32.9		48.6