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改良式实施热身对板球投球技巧的影响。

The Effects of Modified-Implement Warm-Ups on Cricket Pace-Bowling Skill.

出版信息

Int J Sports Physiol Perform. 2021 May 1;16(5):634-640. doi: 10.1123/ijspp.2020-0121. Epub 2021 Jan 28.

Abstract

PURPOSE

This study investigated the acute warm-up effects of modified-implement bowling on bowling speed, accuracy, perceived rhythm and perceived sensation with a regular ball.

METHODS

A total of 13 male amateur pace bowlers completed 3 sessions in a randomized, counterbalanced order. Each session comprised a warm-up of 21 progressive-effort deliveries with either a regular (156 g), 10% heavier (171.6 g), or 10% lighter (140.4 g) cricket ball followed by a 4-over pace-bowling assessment with a regular ball. Bowling speed was assessed with a radar gun, while accuracy was calculated via the radial error. Subjects rated their perceived exertion (0%-100%), rhythm (1-5 Likert scale), and sensation (1-5 Likert scale) after each delivery.

RESULTS

The linear mixed models revealed a significant effect for warm-up condition on perceived delivery sensation (F2,916.404 = 24.137, P < .001), with a significant pairwise difference between the regular- and heavier-ball warm-up conditions of 0.20 ± 0.07 points (estimated marginal mean ± 95% confidence interval, P < .001). There were no statistically significant effects for warm-up condition on bowling speed, accuracy, and perceived delivery rhythm.

CONCLUSIONS

These findings indicate that although the regular ball felt lighter to bowl with after using the heavier ball, there were no overall potentiating or detrimental effects of using this particular modified-implement warm-up on bowling speed, accuracy, and perceived rhythm in amateur pace bowlers. Future research is encouraged to trial other protocols for eliciting potentiation to ultimately enhance bowling speed in training or in shorter match formats (eg, Twenty20).

摘要

目的

本研究调查了改良器具投球对投球速度、准确性、感知节奏和使用标准球时的感知感觉的急性热身效果。

方法

共有 13 名男性业余快投手以随机、平衡的顺序完成了 3 次测试。每次测试均包含 21 次渐进式投球的热身,使用标准球(156 克)、重 10%的球(171.6 克)或轻 10%的球(140.4 克),然后用标准球进行 4 轮快投评估。使用雷达枪评估投球速度,而准确性则通过径向误差计算。每个投球后,被试者会对感知用力程度(0%-100%)、节奏(1-5 分 Likert 量表)和感觉(1-5 分 Likert 量表)进行评分。

结果

线性混合模型显示,热身条件对感知投球感觉有显著影响(F2,916.404 = 24.137,P <.001),标准球和重球热身条件之间的差异显著,差值为 0.20 ± 0.07 分(估计边缘均值 ± 95%置信区间,P <.001)。热身条件对投球速度、准确性和感知投球节奏没有统计学上的显著影响。

结论

这些发现表明,尽管在使用重球后,标准球感觉更轻,但在业余快投手中,使用这种特殊的改良器具热身对投球速度、准确性和感知节奏没有整体的增强或不利影响。鼓励未来的研究尝试其他激发增强的方案,以最终在训练或更短的比赛形式(如 Twenty20)中提高投球速度。

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