Predicting MAOD Using Only a Supramaximal Exhaustive Test

Abstract

The objective of this study was to propose an alternative method (MAOD_ALT) to estimate the maximal accumulated oxygen deficit (MAOD) using only one supramaximal exhaustive test. Nine participants performed the following tests: (a) a maximal incremental exercise test, (b) six submaximal constant workload tests, and (c) a supramaximal constant workload test. Traditional MAOD was determined by calculating the difference between predicted O₂ demand and accumulated O₂ uptake during the supramaximal test. MAOD_ALT was established by summing the fast component of excess post-exercise oxygen consumption and the O₂ equivalent for energy provided by blood lactate accumulation, both of which were measured during the supramaximal test. There was no significant difference between MAOD (2.82±0.45 L) and MAOD_ALT (2.77±0.37 L) (p=0.60). The correlation between MAOD and MAOD_ALT was also high (r=0.78; p=0.014). These data indicate that the MAOD_ALT can be used to estimate the MAOD.

Key words

oxygen uptake - blood lactate - excess post-exercise oxygen consumption

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