Train brain instead of muscle: Immediate effect of neuro-athletic training on flexibility, service and upper extremity performance in elite volleyball players - a randomized controlled trial - Soylu, Ç.; Altundag, E.; Isguzar, G.; Un Yildirim, N. (28th Annual Congress of the European College of Sport Science, 4-7 July 2023, Paris, France, 2023)