Über die Wirksamkeit der Sauerstoffatmung

Uhlenbruck, Paul

doi:10.1007/bf02624846

Cited by 27 publications

(1 citation statement)

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“…In the early 1930's, Uhlenbruck described the "spirographic oxygen defi cit" (SOD) in cardiac patients as one physiological benchmark for evaluating cardiopulmonary exercise tolerance [ 36 ] . The SOD was defi ned as an increase in oxygen uptake within the fi rst minute after elevating the fractional content of inspired oxygen (F in O 2 ) from normoxia (F in O 2 = 0.21) to hyperoxia (F in O 2 = 0.70) during resting conditions [ 36 ] . Based on the fi ndings of Uhlenbruck, Brauer and colleagues measured the SOD during steady-state exercise to evaluate the cardiopulmonary tolerance of patients with lung disease [ 6 ] .…”

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The Spirografic Oxygen Deficit: Its Role in Cardiopulmonary Exercise Testing

et al. 2013

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The increase in oxygen uptake > 100 ml · min-1 during steady state exercise when elevating the inspired fractional air content (FinO2) from 0.21-1.00 defines the "spirografic oxygen deficit" (SOD). The purpose of this study was 2-fold: 1) determine the SOD at different exercise intensities in healthy participants and 2) investigate if a correlation exists among key variables of cardiopulmonary exercise testing. 12 men (24±2 yrs; 183±4 cm; 83.5±5.3 kg) performed cycle tests to determine maximal power output (Pmax), the power output at the first (PVT1) and the second ventilatory threshold (PVT2), at 4 mmol · l-1 blood lactate (P4) and lactate threshold (PLT). When cycling at 30, 40, 50, 60, 70 and 80% Pmax, the FinO2 was increased from 0.21-1.00 after 5 min to assess the power output at the SOD and at which blood lactate increased > 1 mmol∙L-1 (PLLAC). The SOD occurred at 70% Pmax accompanied by increased blood lactate concentration (p<0.01). The PSOD correlated with PLACC (p=0.05; r=0.61), but not with PVT1, PVT2, P4, or PLT (best p=0.29; highest r=0.39). In conclusion, the SOD may represent a non-invasive tool for evaluating submaximal endurance performance, especially when evaluating the peripheral contribution to performance.

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confidence: 99%