Perceived exertion threshold: Comparison with ventilatory thresholds and critical power

• Autor(a) principal: Nakamura, Fábio Yuzo
• Data de Publicação: 2009
• Outros Autores: Okuno, Nilo Massaru, Perandini, Luiz Augusto Buoro, Oliveira, Fernando Roberto de, Buchheit, Martin, Simões, Herbert Gustavo
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UCB
• Texto Completo: http://hdl.handle.net/123456789/148; https://repositorio.ucb.br:9443/jspui/handle/123456789/7368
• topic: Aerobic capacity; Maximal oxygen uptake; Validity

Objective. – The aim of this study was to provide concurrent validity evidences to perceived exertion threshold (PET) by comparing and establishing relationships with aerobic fitness parameters derived from square-wave and incremental tests. Methods. – Eleven male college students performed one incremental test to determine first and second ventilatory thresholds (VT1 and VT2, respectively), maximal oxygen uptake ( VO2max ), and maximal aerobic power (MAP); four predictive trials for the critical power (CP) and PET estimations. Results. – Oxygen consumption ( VO2) at VT1 and VT2 were 22.9±4.2 and 35.8±4.7 ml/kg per minute, respectively. The MAP and VO2max were 267±34W and 40.3±6.3 ml/kg per minute, respectively. The PET (146±31 W) and CP (146±33 W) did not differ from each other, and both estimates were between VT1 (121±28 W) and VT2 (228±36 W). The correlations between PET and CP, expressed in relative terms to body mass, were significant (P<0.01, r = 0.84). The correlations between PET and relative VO2 at VT1 (r = 0.76), VT2 (r = 0.72) and VO2max (r = 0.73) were significant (P<0.05). Conclusion. – PET did not significantly differ from CP, and presented significant correlations with VT1, VT2 and VO2max derived from incremental test. Thus, it can be considered as a valid measure of aerobic capacity. © 2008 Elsevier Masson SAS. All rights reserved.