Cardiorespiratory fitness profile of volunteer firefighters during intermittent incremental exercise: A cross-sectional study. - Bustos, Denisse; Cardoso, Filipa; J. Rios, Manoel; Cardoso, Ricardo; D. Carvalho, Diogo; Guedes, Joana; Torres Costa, José; Vaz, Mário; Santos Baptista, J.; J. Fernandes, Ricardo (PLoS ONE, 2026)