Andersen, Thomas B3; Bendiksen, Mads7; Pedersen, Jens M3; Ørntoft, Christina8; Brito, João5; Jackman, Sarah R6; Williams, Craig A6; Krustrup, Peter8
1 Department of Exercise and Sport Sciences, Faculty of Science, Københavns Universitet2 LUKKET: 2012 Undervisningsudvalg, Department of Exercise and Sport Sciences, Faculty of Science, Københavns Universitet3 Department of Sport Science, University of Aarhus, Aarhus4 Integrated Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, Københavns Universitet5 Centre of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Porto6 Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter7 Department of Exercise and Sport Sciences, Faculty of Science, Københavns Universitet8 Integrated Physiology, Department of Nutrition, Exercise and Sports, Faculty of Science, Københavns Universitet
We investigated kicking velocity and physical, technical, and tactical match performance for under-18 (U18) female football players and evaluated the effect of using a newly developed lighter smaller ball. Ten regional league teams participated. Maximal ball velocity was 4±1% higher when kicking the new ball (NB) compared with the standard ball (SB) in a laboratory testing situation (23.2±0.4 vs. 22.4±0.3 ms(-1); p.05), but lower-limb muscular RPE was lower with NB (4.2±0.4 vs. 5.2±0.3; p.05). High-intensity running decreased (p.05). In conclusion, physiological demands were high in youth female football games, and decrements in running performance occurred towards the end of games. The players kicked faster and reported lower muscular exertion during games played with a lighter smaller ball, but locomotor activities, heart rate and overall technical-tactical game performance remained unaffected.
Human Movement Science, 2012, Vol 31, Issue 6, p. 1624-1638