James Lachlan P, Sweeting Alice J, Kelly Vincent G, Robertson Samuel
Department of Dietetics, Nutrition and Sport, School of Allied Health, La Trobe University, Melbourne, VIC, Australia.
Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia.
Front Artif Intell. 2019 Dec 17;2:29. doi: 10.3389/frai.2019.00029. eCollection 2019.
This study explored longitudinal changes in contemporary mixed martial arts (MMA) combat within the Ultimate Fighting Championship (UFC). A secondary aim was to investigate how bout duration influences the contribution of performance indicators on outcome. Data were acquired via the official analytics provider to the UFC (FightMetric). Male fights with a winner from between 2000 and 2015 ( = 2,831) were examined, with 13 common performance indicators attained during each round for each participant along with duration (min) and year of fight. Non-metric dimensional scaling (nMDS) was used to examine bout characteristics by year. The Repeated Incremental Pruning to Produce Error Reduction (RIPPER) algorithm was run to determine a set of rules to explain bout outcome. The nMDS displayed that winning bout performance indicator attributes were dissimilar across the years. Eight rules were generated from the RIPPER, with fight duration featuring in three of eight rules. Distinct shifts occurred (albeit without linear trend) in performance indicator characteristics during the observed period. This was characterized by a more diverse combat style in the years following 2008. However, offensive grappling has remained a key factor regardless of year, and is influenced by bout duration.
本研究探讨了终极格斗冠军赛（UFC）中当代综合格斗（MMA）比赛的纵向变化。次要目的是研究比赛时长如何影响表现指标对比赛结果的贡献。数据通过UFC的官方分析提供商（FightMetric）获取。对2000年至2015年间有胜者的男子比赛（n = 2,831场）进行了研究，记录了每位参与者每轮的13项常见表现指标以及比赛时长（分钟）和比赛年份。使用非度量多维尺度分析（nMDS）按年份检查比赛特征。运行重复增量剪枝以减少误差（RIPPER）算法来确定一组解释比赛结果的规则。nMDS显示，多年来获胜比赛的表现指标属性各不相同。RIPPER生成了八条规则，其中三条规则涉及比赛时长。在观察期内，表现指标特征发生了明显变化（尽管没有线性趋势）。其特点是2008年之后的年份里格斗风格更加多样化。然而，无论哪一年，进攻性缠斗一直是关键因素，并且受到比赛时长的影响。
