A1 - Zych, Michał A1 - Stec, Krzysztof A1 - Pilis, Anna A1 - Pilis, Wiesław A1 - Michalski, Cezary A1 - Pilis, Karol A1 - Kosiński, Damian CY - Częstochowa T1 - Approaches to describe ventilatory threshold in professional sports PY - 2017 PB - Projack