Department of Exercise Science and Athletic Training, Springfield College, Springfield, Massachusetts.
Patriot Performance Laboratory, Frank Pettrone Center for Sports Performance, George Mason University, Fairfax, Virginia.
J Strength Cond Res. 2023 Aug 1;37(8):e455-e461. doi: 10.1519/JSC.0000000000004444. Epub 2023 Jan 24.
Fields, JB, Jones, MT, Feit, MK, and Jagim, AR. Athlete external loads across a collegiate men's lacrosse season. J Strength Cond Res 37(8): e455-e461, 2023-Tracking and quantifying athlete workload may provide insight into best practice periodization strategies and workload management. Limited information exists detailing the external demands associated with collegiate men's lacrosse. Therefore, the purpose of this study was to investigate and compare practice, game, and positional differences across a lacrosse season. Male collegiate lacrosse athletes ( n = 17; body mass: 79.9 kg ± 9.7 kg; body fat %: 14.7 ± 3.8%) wore a global positional system device during practices ( n = 66) and games ( n = 19). External load metrics were total distance (TD), sprint distance (SD), accelerations (>3 m·s -2 ), sprint efforts, player load (PL), PL/min, and top speed. Multiple analysis of variances assessed differences in external loads across session (practice versus game) and sport position (attackers, midfielders, and defenders). A 3 × 4 analysis of variance was used to determine a position-by-time (first quarter [Q1], second quarter [Q2], third quarter [Q3], and fourth quarter [Q4]) interaction ( p < 0.05). Total distance ( p < 0.001, η2 : 0.047), SD ( p < 0.001, η2 : 0.093), sprint efforts ( p < 0.001, η2 : 0.077), PL ( p < 0.001, η2 : 0.022), and top speeds ( p < 0.001, η2 : 0.086) were all higher in games compared with practices. Attackers and defenders covered more TD ( p < 0.001, η2 = 0.0257), accelerations ( p < 0.001, η2 = 0.126), PL ( p < 0.001, η2 = 0.233), and PL/min ( p < 0.001, η2 = 0.193) than midfielders. Attackers and midfielders covered more SD ( p = 0.002 η2 = 0.043), sprint efforts ( p < 0.001, η2 = 0.053), and achieved higher top speed ( p < 0.001, η2 = 0.0063) than defenders. Volume and intensity metrics declined by Q4 in attackers and defenders ( p < 0.05), whereas external load measures did not differ across quarters for midfielders. Monitoring in-game external loads can assist coaches with individualizing training programs and preparing athletes for game demands.
运动员在一个大学男子长曲棍球赛季的外部负荷。J 力量与体能研究 37(8):e455-e461, 2023-跟踪和量化运动员的工作量可以深入了解最佳实践分期策略和工作量管理。关于大学男子长曲棍球的外部需求的信息有限。因此，本研究的目的是调查和比较长曲棍球赛季中练习、比赛和位置的差异。男性大学长曲棍球运动员( n = 17;体重:79.9 公斤±9.7 公斤;体脂%:14.7±3.8%)在练习时( n = 66)和比赛时( n = 19)佩戴全球位置系统设备。外部负荷指标包括总距离(TD)、冲刺距离(SD)、加速度(>3 m·s-2)、冲刺努力、球员负荷(PL)、PL/min 和最高速度。多变量方差分析评估了不同会话(练习与比赛)和运动位置(攻击手、中场球员和防守球员)之间的外部负荷差异。使用 3×4 方差分析来确定位置-时间(第一季度[Q1]、第二季度[Q2]、第三季度[Q3]和第四季度[Q4])交互(p<0.05)。总距离(p<0.001, η2:0.047)、SD(p<0.001, η2:0.093)、冲刺努力(p<0.001, η2:0.077)、PL(p<0.001, η2:0.022)和最高速度(p<0.001, η2:0.086)在比赛中均高于练习。攻击手和防守者覆盖了更多的 TD(p<0.001, η2 = 0.0257)、加速度(p<0.001, η2 = 0.126)、PL(p<0.001, η2 = 0.233)和 PL/min(p<0.001, η2 = 0.193)比中场球员多。攻击手和中场球员覆盖了更多的 SD(p=0.002, η2 = 0.043)、冲刺努力(p<0.001, η2 = 0.053)和达到更高的最高速度(p<0.001, η2 = 0.0063)比防守球员多。攻击手和防守者的 Q4 时的体积和强度指标下降(p<0.05)，而中场球员的外部负荷指标在各季度之间没有差异。监测比赛中的外部负荷可以帮助教练个性化训练计划，并使运动员为比赛需求做好准备。
