文章基本信息

标题：The pacing of mixed martial arts sparring bouts: A secondary investigation with new analyses of previous data to support accelerometry as a potential method of monitoring pacing
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作者：Christopher Kirk ; Stephen Atkins ; Howard T. Hurst 等
期刊名称：Human Movement
印刷版ISSN：1732-3991
电子版ISSN：1899-1955
出版年度：2020
卷号：21
期号：4
页码：88-96
DOI：10.5114/hm.2020.94194
出版社：Walter de Gruyter GmbH
摘要：Purpose. Body-worn accelerometry has been shown to be reliable and used to measure the external load of mixed martial arts (MMA) via the Playerload metric. These measurements were only reported on a round-by-round basis, offering little indication of minute-by-minute load changes. Understanding these changes may provide a proxy measure of fatigue, readiness, and the onset of non-functional overreaching. It is also unclear as to what Playerload is measuring in MMA. This study was a secondary investigation of previously reported data to describe minute-by-minute changes in external load in MMA. Methods. Six male MMA competitors participated in a 3 × 5 minute sparring bout wearing a Catapult Minimax × 3, which recorded accumulated Playerload. The bouts were video-recorded. Time-motion analysis was used to determine: total active time; total inactive time; high-intensity time; low-intensity time; standing time; grounded time; striking time; non-striking time. Results. Bayesian repeated measures ANOVA found statistically relevant differences in accumulated Playerload for each minute of sparring (BF10 = 410) with no statistically relevant differences between winners and losers. Bayesian correlations revealed a direct, nearly perfect relationship between accumulated Playerload and total active time (r = 0.992, BF10 = 9,666). No other relationships between Playerload and time-motion analysis results were observed, despite Bayesian t-tests finding differences between standing time and grounded time (BF10 = 83.7), striking time and non-striking time (BF10 = 1,419). Conclusions. Playerload reflects overall active movement in MMA and measures active movement minute-by-minute changes but cannot distinguish between different modes or intensities of movement. This should be investigated further as a potential measure of fatigue and non-functional overreaching during MMA training.
关键词：mixed martial arts;pacing;Playerload;combat sports