article 2018 Cardio-Respiratory Endurance Responses Following a Simulated 3 × 3 Minutes Amateur Boxing Contest in Elite Level Boxers Said El-Ashker, Helmi Chaabene, Yassine Negra, Olaf Prieske, Urs Granacher JournalSportsDOI10.3390/sports6040119Study typecross-sectional studyPopulationelite level male boxers View on DOI ↗