MAOD Determined in a Single Supramaximal Test: a Study on the Reliability and Effects of Supramaximal Intensities

Abstract

The main barrier to the wide use of maximal accumulated oxygen deficit (MAOD) is the considerable time required to apply several sub- and supra-maximal exercise sessions. The main question of this study was whether the determination of MAOD using a single supramaximal exercise session (MAOD_ALT) is valid and reliable in running. We investigated the effects of the supramaximal exercise intensity (A) and the reliability of a single supramaximal exercise session (B) to assess MAOD in treadmill running. For this aim 29 subjects participated in A & B studies with single allocation “A” (n=15) and “B” (n=14). The conventional MAOD and 8 MAOD_ALT were determined in exhaustive efforts varying between 100–150% at an intensity associated with maximal oxygen uptake (i+V˙O_2MAX). In B study 2 supramaximal efforts were applied to analyze the test-retest reliability. Non-significant differences were found between MAOD and the 8 values of MAOD_ALT. Despite the MAOD being statistically correlated with the MAOD_ALT 100% i+V˙O_2MAX (0.49<r>0.59), MAOD_ALT determined at 115% of i+V˙O_2MAX (52.4±1.7 mL·kg⁻¹) presented the higher correlation values (0.65<r>0.77) and concordance. In addition, the MAOD at 115% of i+V˙O_2MAX presented high test-retest reliability. MAOD_ALT determined at 115% of i+V˙O_2MAX was a valid and reliable method to assess MAOD in running.

Key words

blood lactate concentration - glycolytic metabolic pathway - phosphagen metabolic pathway - supramaximal efforts

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