Int J Sports Med 2013; 34(12): 1074-1078
DOI: 10.1055/s-0033-1334877
Training & Testing
© Georg Thieme Verlag KG Stuttgart · New York

The Spirografic Oxygen Deficit: Its Role in Cardiopulmonary Exercise Testing

B. Sperlich
1   Department of Sport Science, University of Wuppertal, Germany
,
T. Schiffer
2   Outpatient clinic for sports traumatology and public health consultation, German Sport University Cologne, Germany
,
U. Hoffmann
3   Institute of Physiology and Anatomy, German Sport University Cologne, Germany
,
H. K. Strueder
4   Institute of Movement and Neurosciences,German Sport University Cologne,Germany
,
W. Hollmann
5   Cardiology and Sports Medicine, German Sport University Cologne, Germany
› Author Affiliations
Further Information

Publication History



accepted after revision 24 January 2013

Publication Date:
13 May 2013 (online)

Abstract

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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