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Intersession reliability of GPS-based and accelerometer-based physical variables in small-sided games with and without the offside rule
Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology ( IF 1.5 ) Pub Date : 2021-01-17 , DOI: 10.1177/1754337120987646
Igor Junio de Oliveira Custódio 1 , Gibson Moreira Praça 1 , Leandro Vinhas de Paula 1 , Sarah da Glória Teles Bredt 1 , Fabio Yuzo Nakamura 2 , Mauro Heleno Chagas 1
Affiliation  

This study aimed to analyze the intersession reliability of global positioning system (GPS-based) distances and accelerometer-based (acceleration) variables in small-sided soccer games (SSG) with and without the offside rule, as well as compare variables between the tasks. Twenty-four high-level U-17 soccer athletes played 3 versus 3 (plus goalkeepers) SSG in two formats (with and without the offside rule). SSG were performed on eight consecutive weeks (4 weeks for each group), twice a week. The physical demands were recorded using a GPS with an embedded triaxial accelerometer. GPS-based variables (total distance, average speed, and distances covered at different speeds) and accelerometer-based variables (Player Load™, root mean square of the acceleration recorded in each movement axis, and the root mean square of resultant acceleration) were calculated. Results showed that the inclusion of the offside rule reduced the total distance covered (large effect) and the distances covered at moderate speed zones (7–12.9 km/h – moderate effect; 13–17.9 km/h – large effect). In both SSG formats, GPS-based variables presented good to excellent reliability (intraclass correlation coefficients – ICC > 0.62) and accelerometer-based variables presented excellent reliability (ICC values > 0.89). Based on the results of this study, the offside rule decreases the physical demand of 3 versus 3 SSG and the physical demands required in these SSG present high intersession reliability.



中文翻译:

带有和不带有越位规则的小型比赛中基于GPS和基于加速度计的物理变量的会话间可靠性

这项研究旨在分析在有和没有越位规则的情况下,小边足球比赛(SSG)中全球定位系统(基于GPS)的距离和基于加速度计(加速度)的会话间可靠性,并比较任务之间的变量。24名U-17高级别足球运动员以两种格式(有或没有越位规则)进行了3对3(加上守门员)SSG比赛。SSG连续八周(每组4周)进行一次,每周两次。使用带有嵌入式三轴加速度计的GPS记录了物理需求。基于GPS的变量(总距离,平均速度和以不同速度覆盖的距离)和基于加速度计的变量(Player Load™,每个运动轴上记录的加速度的均方根,和最终加速度的均方根)。结果表明,越位规则的包含减少了总的覆盖距离(较大的影响)和中速区域的覆盖距离(7–12.9 km / h –中度影响; 13–17.9 km / h –大影响)。在这两种SSG格式中,基于GPS的变量都具有出色的可靠性(类内相关系数– ICC> 0.62),而基于加速度计的变量则具有出色的可靠性(ICC值> 0.89)。根据这项研究的结果,越位规则减少了3个SSG与3个SSG的物理需求,而这些SSG中要求的物理需求表现出较高的会话间可靠性。结果表明,越位规则的包含减少了总的覆盖距离(较大的影响)和中速区域的覆盖距离(7–12.9 km / h –中度影响; 13–17.9 km / h –大影响)。在这两种SSG格式中,基于GPS的变量都具有出色的可靠性(类内相关系数– ICC> 0.62),而基于加速度计的变量则具有出色的可靠性(ICC值> 0.89)。根据这项研究的结果,越位规则降低了3个SSG与3个SSG的物理需求,而这些SSG中要求的物理需求表现出较高的会话间可靠性。结果表明,越位规则的包含减少了总的覆盖距离(较大的影响)和中速区域的覆盖距离(7–12.9 km / h –中度影响; 13–17.9 km / h –大影响)。在这两种SSG格式中,基于GPS的变量都具有出色的可靠性(类内相关系数– ICC> 0.62),而基于加速度计的变量则具有出色的可靠性(ICC值> 0.89)。根据这项研究的结果,越位规则减少了3个SSG与3个SSG的物理需求,而这些SSG中要求的物理需求表现出较高的会话间可靠性。62)和基于加速度计的变量具有出色的可靠性(ICC值> 0.89)。根据这项研究的结果,越位规则减少了3个SSG与3个SSG的物理需求,而这些SSG中要求的物理需求表现出较高的会话间可靠性。62)和基于加速度计的变量具有出色的可靠性(ICC值> 0.89)。根据这项研究的结果,越位规则减少了3个SSG与3个SSG的物理需求,而这些SSG中要求的物理需求表现出较高的会话间可靠性。

更新日期:2021-01-18
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