Changes in swimming technique and physical performance after 8 weeks of lifeguard rescue training: an exploratory study
Makar, Piotr, Bielec, Grzegorz, Skalski, Dariusz, Kowalski, Damian, Pęczak-Graczyk, Alicja, Grygus, Igor, Kisilewicz, Aleksandra
Variants of Development of Sports Career of 11-Year-Old Female Swimmers
Bielec, Grzegorz