Determination of lactic and alactic metabolisms of the anaerobic capacity using oxygen uptake.

Rodrigo Poles Urso, Marcos David da Silva-Cavalcante, Carlos Rafaell Correia-Oliveira, Salomão Bueno, Mayara Vieira Damasceno, Adriano Eduardo Lima-Silva, Rômulo Bertuzzi

Abstract


It has been suggested that the participation of alactic anaerobic metabolism(AAM) in physical activity can be estimated by calculating the fast componentof excess post-exercise oxygen consumption (EPOCFAST). Considering that maximalaccumulated oxygen deficit (MAOD) represents the total amount of energytransferred by anaerobic metabolisms, this study aimed to analyze whethersubtracting EPOCFAST from MAOD (MAODLA-1) provides a satisfactory estimate oflactic anaerobic metabolism (LAM). For this purpose, MAODLA-1 was compared withthe method by which the energy derived from blood lactate accumulation (MAODLA-2)is expressed as oxygen equivalent. Nine active adult men were submitted to fourexperimental sessions: 1) a maximal incremental exercise test until exhaustionon a cycle ergometer to measure the maximal oxygen consumption (VO2max) and theexternal power corresponding to VO2max (WVO2max); 2) and 3) sixconstant-workload tests (3 per session) at intensities below WVO2max; 4) oneconstant-workload test at an intensity corresponding to 110% of W O2max. Themain finding was that both methods (MAODLA-1 e MAODLA-2) that were used toestimate the contribution of LAM in MAOD resulted in similar statistical values(p > 0.05). In addition, percentage values of MAODLA-1 (representing MAL) and EPOCFAST (representing AAM) were approximately 78 and 22%, respectively. Thus,the procedure proposed in this paper may be of interest to future studies onthe contribution of anaerobic components to MAOD.

Keywords


Bioenergetics; Lactate; Oxygen.



DOI: https://doi.org/10.1590/1980-0037.2013v15n5p616

The abbreviated title of the journal is Rev. Bras. Cineantropom. Desempenho Hum, which should be used in bibliographies, footnotes and bibliographical references. E-ISSN 1980-0037, impressa ISSN 1415-8426, Florianópolis, Santa Catarina, Brazil. This work is licensed under a Creative Commons Attribution 4.0 International License.