Determination of Maximum Accumulated Oxygen Deficit Using Backward Extrapolation

Autor(es)

Andrade, Vitor Luiz ^{[1, 2]} ; Kalva-Filho, Carlos Augusto ^[3] ; Ribeiro, Nayan Xavier ^[4] ; Gobbi, Ronaldo Bucken ; de Arruda, Tarine Botta ^[4] ; Papoti, Marcelo ^[5]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista Julio Mesquita Filho Campu, Inst Biociencias UNESP, Rio Claro - Brazil

^[2] Ctr Univ UNIFAFIBE, Phys Educ, Bebedouro - Brazil

^[3] Univ Sao Paulo, Rehabil & Funct Performance, Ribeirao Preto - Brazil

^[4] USP EEFERP, Phys Educ, Ribeirao Preto - Brazil

^[5] Univ Sao Paulo, Sch Phys Educ & Sport Ribeirao Preto, Ribeirao Preto - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF SPORTS MEDICINE; v. 42, n. 02 SEP 2020.
• Citações Web of Science: 0

Resumo

This study aimed to compare the Maximum Accumulated Oxygen Deficit determined by the conventional method (MAOD(C)) with that determined by the backward extrapolation technique (MAOD(EXTR)) in runners. Fourteen runners underwent a maximal incremental test for determination of iVO(2MAX), ten submaximal efforts (50-95 % of iVO(2MAX) for 7 min). During the submaximal efforts oxygen consumption (VO2) values were obtained conventionally and through the backward extrapolation technique (similar to 3 s after the end of each effort). A supramaximal effort (110 % of iVO(2MAX)) (tLim(C)) and five supramaximal bouts (tLim(EXTR)) were performed. MAOD(C) and MAOD(EXTR) were determined from the difference between the VO2 accumulated during tLimC and tLim(EXTR) and the predicted values. The tLimC was lower than tLim(EXTR) (164.06 +/- 36.32 s, 200.23 +/- 63.78 s, p < 0.05). No significant differences were found between absolute and relative MAOD(C) and MAOD(EXTR) values, however, low intraclass correlations (0.26 and 0.24), high typical errors (2.03 L and 24 mL.kg(-1)) were observed, and coefficients of variation (46 and 48 %), respectively. The graphical analysis of the differences showed agreement and correlation between the methods (r = 0.86 and 0.85). Thus, it can be concluded that the MAOD(EXTR) is not a valid method for estimating the anaerobic capacity of runners, moreover, unreliable. (AU)

• Processo FAPESP: 13/15322-3 - Determinação do máximo déficit acumulado de oxigênio por meio da técnica de retro extrapolação em nadadores, corredores e ciclistas
• Beneficiário: Marcelo Papoti
• Modalidade de apoio: Auxílio à Pesquisa - Regular