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# Determining the contribution of the energy systems during exercise (2012)

• Authors:
• USP affiliated authors: BERTUZZI, RÔMULO CÁSSIO DE MORAES - EEFE ; SILVA, HAMILTON AUGUSTO ROSCHEL DA - EEFE ; LANCHA JUNIOR, ANTONIO HERBERT - EEFE ; FRANCHINI, EMERSON - EEFE
• USP Schools: EEFE; EEFE; EEFE; EEFE
• DOI: 10.3791/3413
• Subjects: FISIOLOGIA; METABOLISMO; EXERCÍCIO FÍSICO
• Language: Inglês
• Abstract: One of the most important aspects of the metabolic demand is the relative contribution of the energy systems to the total energy required for a given physical activity. Although some sports are relatively easy to be reproduced in a laboratory (e.g., running and cycling), a number of sports are much more difficult to be reproduced and studied in controlled situations. This method presents how to assess the differential contribution of the energy systems in sports that are difficult to mimic in controlled laboratory conditions. The concepts shown here can be adapted to virtually any sport. The following physiologic variables will be needed: rest oxygen consumption, exercise oxygen consumption, post-exercise oxygen consumption, rest plasma lactate concentration and post-exercise plasma peak lactate. To calculate the contribution of the aerobic metabolism, you will need the oxygen consumption at rest and during the exercise. By using the trapezoidal method, calculate the area under the curve of oxygen consumption during exercise, subtracting the area corresponding to the rest oxygen consumption. To calculate the contribution of the alactic anaerobic metabolism, the post-exercise oxygen consumption curve has to be adjusted to a mono or a bi-exponential model (chosen by the one that best fits). Then, use the terms of the fitted equation to calculate anaerobic alactic metabolism, as follows: ATP-CP metabolism = A1 (mL . s-1) x t1 (s). Finally, to calculate the contribution of the lactic anaerobic system, multiply peak plasma lactate by 3 and by the athlete’s body mass (the result in mL is then converted to L and into kJ). The method can be used for both continuous and intermittent exercise. This is a very interesting approach as it can be adapted to exercises and sports that are difficult to be mimicked in controlled environments. (Continue)(Continuation) Also, this is the only available method capable of distinguishing the contribution of three different energy systems. Thus, the method allows the study of sports with great similarity to real situations, providing desirable ecological validity to the study
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Informações sobre o DOI: 10.3791/3413 (Fonte: oaDOI API)
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Título do periódico: Journal of Visualized Experiments

ISSN: 1940-087X

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##### Informações sobre o Citescore
• Título: Journal of Visualized Experiments

ISSN: 1940-087X

Citescore - 2017: 1.38

SJR - 2017: 0.827

SNIP - 2017: 0.467

• Exemplares físicos disponíveis nas Bibliotecas da USP
EEFE2302065-10PRO 2012 020
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• ABNT

ARTIOLI, G. G; BERTUZZI, Rômulo Cássio de Moraes; ROSCHEL, Hamilton; et al. Determining the contribution of the energy systems during exercise. The Journal of Visualized Experiments, Boston, v. 61, 2012. Disponível em: < http://www.jove.com/pdf/3413/jove-protocol-3413-determining-the-contribution-of-the-energy-systems-during-exercise > DOI: 10.3791/3413.
• APA

Artioli, G. G., Bertuzzi, R. C. de M., Roschel, H., Mendes, S. H., Lancha Junior, A. H., & Franchini, E. (2012). Determining the contribution of the energy systems during exercise. The Journal of Visualized Experiments, 61. doi:10.3791/3413
• NLM

Artioli GG, Bertuzzi RC de M, Roschel H, Mendes SH, Lancha Junior AH, Franchini E. Determining the contribution of the energy systems during exercise [Internet]. The Journal of Visualized Experiments. 2012 ; 61Available from: http://www.jove.com/pdf/3413/jove-protocol-3413-determining-the-contribution-of-the-energy-systems-during-exercise
• Vancouver

Artioli GG, Bertuzzi RC de M, Roschel H, Mendes SH, Lancha Junior AH, Franchini E. Determining the contribution of the energy systems during exercise [Internet]. The Journal of Visualized Experiments. 2012 ; 61Available from: http://www.jove.com/pdf/3413/jove-protocol-3413-determining-the-contribution-of-the-energy-systems-during-exercise