Energy system contribution in a maximal incremental test: correlations
with pacing and overall performance in a 10-km running trial |
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| Authors: | M.V. Damasceno L.A. Pasqua A.E. Lima-Silva R. Bertuzzi |
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| Affiliation: | 1.Grupo de Estudos em Desempenho Aeróbio da USP (GEDAE-USP), Departamento de Esporte, Escola de Educação Física e Esporte, Universidade de São Paulo, São Paulo, SP, Brasil;2.Grupo de Pesquisa sobre Ciência dos Esportes, Centro Acadêmico de Vitória, Universidade Federal de Pernambuco, Vitória de Santo Antão, PE, Brasil |
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| Abstract: | ![]()
This study aimed to verify the association between the contribution of energy systemsduring an incremental exercise test (IET), pacing, and performance during a 10-kmrunning time trial. Thirteen male recreational runners completed an incrementalexercise test on a treadmill to determine the respiratory compensation point (RCP),maximal oxygen uptake (), peak treadmill speed (PTS), and energy systems contribution; anda 10-km running time trial (T10-km) to determine endurance performance. The fractionsof the aerobic (WAER) and glycolytic (WGLYCOL) contributionswere calculated for each stage based on the oxygen uptake and the oxygen energyequivalents derived by blood lactate accumulation, respectively. Total metabolicdemand (WTOTAL) was the sum of these two energy systems. Enduranceperformance during the T10-km was moderately correlated with RCP, and PTS (P<@0.05), and moderate-to-highly correlated withWAER, WGLYCOL, and WTOTAL (P<0.05). Inaddition, WAER, WGLYCOL, and WTOTAL were alsosignificantly correlated with running speed in the middle (P<0.01) and final(P<0.01) sections of the T10-km. These findings suggest that the assessment ofenergy contribution during IET is potentially useful as an alternative variable inthe evaluation of endurance runners, especially because of its relationship withspecific parts of a long-distance race. |
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| Keywords: | Aerobic metabolism Running Maximal oxygen uptake Anaerobic metabolism Endurance performance |
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