Table 1.
Subject characteristics.
Fig 1.
Typical example of detection of Δ[O2HbMb-HHbMb]-BP and ventilatory thresholds.
Ventilatory thresholds VT1 and VT2 (closed circles) are depicted within the ventilatory equivalent versus PO graph (upper graphs, a). Δ[O2HbMb-HHbMb]-BP (open square) is derived from Δ([O2HbMb]–[HHbMb]) versus PO graph by means of double linear regression analyses with the least combined residual sum of squares (lower graphs, b). Both Δ[O2HbMb-HHbMb]-BP and ventilatory thresholds are determined for subsequent trials in a trained male cyclist for test (left graphs) and retest (right graphs).
Fig 2.
Relationship between Δ[O2HbMb-HHbMb]-BP and VT1.
Δ[O2HbMb-HHbMb]-BP and VT1 are moderately related for (a) en PO (b). Individual values are shown for male cyclists (closed triangle), female cyclists (closed circle), endurance trained males (open square), recreationally trained males (open triangle). The thick solid line represents the best linear fit obtained from individual data at Δ[O2HbMb-HHbMb]-BP and VT1 and the dotted line represents extrapolation of this best linear fit. The thin solid line is the line of identity.
Table 2.
Group differences in SmO2 values at rest, exercise and end arterial occlusion and in PO and values at the exercise thresholds.
Table 3.
Reproducibility of SmO2 values at rest, exercise and arterial occlusion and reproducibility of PO and at the exercise thresholds among twenty trained cyclists.
Fig 3.
ATT affects SmO2 and symmetry of deoxygenated and oxygenated haemoglobin and myoglobin.
Adipose tissue thickness is hyperbolically related to SmO2 at peak exercise (a) and at the end of arterial occlusion (b). Symmetry of (de)oxygenated haemoglobin (ΔHHbMb/ΔO2HbMb) during maximal exercise (c) and from rest to the end of arterial occlusion (d) are linearly related to adipose tissue thickness. Individual values are shown for male cyclists (closed triangle), female cyclists (closed circle), endurance trained males (open square), recreationally trained males (open triangle). Note that occlusion data were successfully obtained in 36 out of 40 subjects.