Intermittent hypoxic training at lactate threshold intensity improves aiming performance in well-trained biathletes with little change of cardiovascular variables - Czuba ,M.; Bril, G.; Ploszczyca, K.; Piotrowicz, Z.; Chalimoniuk, M.; Roczniok, R.; Zembron-Lacny, A.; Gerasimuk, D.; Langfort, J. (BioMed Research International, 2019)