@article {Sotiropoulos2021a,
	title = {Characterizing adaptations of serve indicators in top-level male volleyball among seasons},
	journal = {International Journal of Sports Science and Coaching},
	volume = {16},
	year = {2021},
	pages = {784-792},
	abstract = {{The purpose of this study was to analyse selected serve characteristics in top-level male volleyball, with a special focus on detecting adaptations of the serve skill among seasons. The indicators examined were type, position, direction and quality of serve. The sample consisted of 5482 serves from three final phases of different top-level tournaments (Olympic Games 2012},
	keywords = {Game tactics, notational analysis, performance ana},
	issn = {2048397X},
	doi = {10.1177/1747954120978920},
	author = {Sotiropoulos, Konstantinos and Drikos, Sotirios and Papadopoulou, Sophia D. and Karolina Barzouka}
}
