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首页> 外文期刊>Journal of science and medicine in sport >Entropy measures detect increased movement variability in resistance training when elite rugby players use the ball
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Entropy measures detect increased movement variability in resistance training when elite rugby players use the ball

机译：当精英橄榄球运动员使用球时，熵措施检测抗性训练的增加的运动变异性

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ObjectivesThis study described the variability in acceleration during a resistance training task, performed in horizontal inertial flywheels without (NOBALL) or with the constraint of catching and throwing a rugby ball (BALL). Design and methodsTwelve elite rugby players (mean±SD: age 25.6±3.0years, height 1.82±0.07m, weight 94.0±9.9kg) performed a resistance training task in both conditions (NOBALL AND BALL). Players had five minutes of a standardized warm-up, followed by two series of six repetitions of both conditions: at the first three repetitions the intensity was progressively increased while the last three were performed at maximal voluntary effort. Thereafter, the participants performed two series of eight repetitions from each condition for two days and in a random order, with a minimum of 10min between series. The structure of variability was analysed using non-linear measures of entropy. ResultsMean changes (%; ±90% CL) of 4.64; ±3.1g for mean acceleration and 39.48; ±36.63a.u. for sample entropy indicated likely and very likely increase when in BALL condition. Multiscale entropy also showed higher unpredictability of acceleration under the BALL condition, especially at higher time scales. ConclusionsThe application of match specific constraints in resistance training for rugby players elicit different amount of variability of body acceleration across multiple physiological time scales. Understanding the non-linear process inherent to the manipulation of resistance training variables with constraints and its motor adaptations may help coaches and trainers to enhance the effectiveness of physical training and, ultimately, better understand and maximize sports performance.
机译：ObjectIvesthis研究描述了在横向惯性飞轮的电阻训练任务期间的加速度的变化，没有（noball）或捕获和投掷橄榄球（球）的约束。设计和方法启示精英橄榄球运动员（平均±SD：年龄25.6±3.0年，高度1.82±0.07M，重量94.0±9.9kg）在两个条件下进行电阻训练任务（Noball和Ball）。玩家有五分钟的标准化热身，其次是两个条件的两个系列六重复：在前三次重复时，强度逐渐增加，而最后三次以最大自愿努力进行。此后，参与者从每个条件进行两次八次重复两天，以随机顺序，在系列之间至少10分钟。使用熵的非线性测量分析了变异性的结构。结果模糊（％;±90％Cl）为4.64;平均加速度和39.48的±3.1g; ±36.63a.u。对于样本熵可能并且在球条件下可能很可能会增加。多尺度熵还表现出更高的令人难度的加速度，特别是在较高的时间尺度下。结论橄榄球运动员抗性训练匹配特定约束的应用横跨多种生理时间尺度的不同数量的身体加速度。了解具有约束及其电机适应的阻力训练变量操纵固有的非线性过程可以帮助教练和培训师提高体育培训的有效性，并最终更好地理解和最大化运动性能。

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