External torque as a factor to modify load in abdominal curl-up exercises

by Rutkowska-Kucharska Alicja, Szpala Agnieszka
Published 2015-03-01

The assessment of specific physical fitness of children aged 8 and 9 years participating in tennis classes using the Jindrich Hoehm test

by Szpala Agnieszka, Rutkowska-Kucharska Alicja, Syrewicz Paweł
Published 2014-01-01