title: Activity profile of high-level Australian lacrosse players.
abstract: Despite lacrosse being one of the fastest growing team sports in the world, there is a paucity of information detailing the activity profile of high-level players. Microtechnology systems (global positioning systems and accelerometers) provide the opportunity to obtain detailed information on the activity profile in lacrosse. Therefore, this study aimed to analyze the activity profile of lacrosse match-play using microtechnology. Activity profile variables assessed relative to minutes of playing time included relative distance (meter per minute), distance spent standing (0-0.1 m·min), walking (0.2-1.7 m·min), jogging (1.8-3.2 m·min), running (3.3-5.6 m·min), sprinting (≥5.7 m·min), number of high, moderate, low accelerations and decelerations, and player load (PL per minute), calculated as the square root of the sum of the squared instantaneous rate of change in acceleration in 3 vectors (medio-lateral, anterior-posterior, and vertical). Activity was recorded from 14 lacrosse players over 4 matches during a national tournament. Players were separated into positions of attack, midfield, or defense. Differences (effect size [ES] ± 90% confidence interval) between positions and periods of play were considered likely positive when there was ≥75% likelihood of the difference exceeding an ES threshold of 0.2. Midfielders had likely covered higher (mean ± SD) meters per minute (100 ± 11) compared with attackers (87 ± 14; ES = 0.89 ± 1.04) and defenders (79 ± 14; ES = 1.54 ± 0.94) and more moderate and high accelerations and decelerations. Almost all variables across positions were reduced in quarter 4 compared with quarter 1. Coaches should accommodate for positional differences when preparing lacrosse players for competition.
authors.affiliation: 1School of Exercise Science, Australian Catholic University, Melbourne, Australia; 2School of Exercise Science, Australian Catholic University, Brisbane, Australia; 3School of Exercise Science, University of Western Australia, Australia; and 4Department of Physiology, Australian Institute of Sport, Western Australia, Australia.
authors.forename: Chris S
authors.initials: CS
authors.lastname: Polley
authors.forename: Stuart J
authors.initials: SJ
authors.lastname: Cormack
authors.forename: Tim J
authors.initials: TJ
authors.lastname: Gabbett
authors.forename: Ted
authors.initials: T
authors.lastname: Polglaze
mesh_terms: D000054:Acceleration; D054874:Athletic Performance / Q000502:physiology*; D003654:Deceleration; D040362:Geographic Information Systems; D006801:Humans; D007590:Jogging; D008297:Male; D055616:Microtechnology; D015865:Racquet Sports / Q000502:physiology*; D012420:Running; D016138:Walking