Table 4.

Peak, mean and minimum values of the muscle oxygenation (tissue saturation index and ΔµM of oxyhemoglobin [O₂Hb], deoxyhemoglobin [HHb] and total hemoglobin [tHb]) in biceps brachii (BB) and vastus lateralis (VL) muscles in AO30 (exercise and recovery). Additionally, this table shows the differences and  correlations between muscle oxygenation in BB and VL (n = 12).

Muscle Oxygenation
	BB	VL	BB vs VL
	Mean ± SEM	Mean ± SEM	P value	r value (P value)
AO30s – Exercise
TSI
Peak (%)	76 ± 2	79 ± 2	0.230	0.02 (0.939)
Mean (%)	52 ± 2	60 ± 2	0.010	0.30 (0.331)
Minimum (%)	31 ± 3	50 ± 4	0.000	0.55 (0.062)
Δ[O2Hb]
Peak (µM)	8 ± 3	8 ± 2	0.991	−0,71 (0.825)
Mean(µM)	−16 ± 4	−8 ± 2	0.160	−0.56 (0.058)
Minimum (µM)	−33 ± 5	−13 ± 2	0.007	−0.36 (0.241)
Δ[HHb]
Peak (µM)	19 ± 2	10 ± 3	0.001	0.69 (0.013)
Mean (µM)	5 ± 2	6 ± 2	0.613	0.48 (0.117)
Minimum (µM)	−10 ± 2	−2 ± 1	0.003	−0.16(0.629)
Δ[tHb]
Peak (µM)	3 ± 4	7 ± 3	0.406	−0.47 (0.125)
Mean (µM)	−11 ± 5	−2 ± 2	0.131	−0.28 (0.383)
Minimum (µM)	−18 ± 5	−5 ± 2	0.039	−0.23 (0.478)
AO30s – Recovery
TSI
Peak (%)	69 ± 2	75 ± 1	0.027	−0.46 (0.134)
Mean (%)	61 ± 2	71 ± 2	0.005	−0.50 (0.096)
Minimum (%)	35 ± 2	56 ± 2	0.000	0.37 (0.231)
Δ[O2Hb]
Peak (µM)	10 ± 5	6 ± 2	0.503	−0,39 (0.213)
Mean(µM)	1 ± 4	1 ± 2	0.988	−0.82 (0.001)
Minimum (µM)	−33 ± 5	−11 ± 2	0.003	−0.36 (0.250)
Δ[HHb]
Peak (µM)	22 ± 2	9 ± 3	0.000	0.49 (0.109)
Mean (µM)	6 ± 2	2 ± 2	0.207	0.16 (0.628)
Minimum (µM)	0 ± 2	−1 ± 1	0.927	−0.09 (0.785)
Δ[tHb]
Peak (µM)	14 ± 6	7 ± 3	0.361	−0.27 (0.388)
Mean (µM)	7 ± 5	3 ± 3	0.574	−0.35 (0.261)
Minimum (µM)	−14 ± 4	−3 ± 3	0.052	−0.07 (0.819)

Results are expressed by mean ± standard error of the mean (SEM). Significance was pre-fixed at P ≤ 0.05.