a School of Sport, Exercise and Health Sciences , Loughborough University , Leicestershire , UK.
J Sports Sci. 2018 Sep;36(17):1972-1978. doi: 10.1080/02640414.2018.1428884. Epub 2018 Jan 19.
In order to get bounce and movement seam bowlers need to bowl the ball "into" the pitch. Standard deliveries by elite players are typically projected at around 7° below horizontal. In contrast, young players currently often need to release the ball almost horizontally in an effort to get the ball to bounce close enough to the batter. We anticipated that shortening the pitch could be a simple way to help young bowlers to release the ball at a better angle and with more consistency. Twenty county or best in club age group under 10 and under 11 seam bowlers were analysed bowling indoors on two different pitch lengths. They were found to project the ball on average 3.4° further below horizontal on a 16 yard pitch compared with a 19 yard pitch, while ball speed and position at release changed negligibly. Pitch length did not affect the consistency of the release parameters. The shorter pitch led to a ball release angle closer to that of elite bowlers without changing release speed, and this should enable players to achieve greater success and develop more variety in their bowling.
为了获得弹跳和移动缝球手需要将球“打入”投球区。优秀球员的标准投球通常在水平线下约 7°左右。相比之下，目前的年轻球员通常需要几乎水平地释放球，以努力使球足够靠近击球手弹跳。我们预计缩短投球区可能是帮助年轻投球手以更好的角度和更一致的方式释放球的一种简单方法。在两个不同的投球区长 16 码和 19 码的室内，分析了 20 名县或俱乐部最佳年龄组 10 岁以下和 11 岁以下的缝球手。结果发现，与 19 码的投球区相比，他们在 16 码的投球区中将球平均进一步向下水平投射 3.4°，而球速和释放时的位置变化可以忽略不计。投球区长度不影响释放参数的一致性。较短的投球区导致球的释放角度更接近优秀投球手的角度，而不改变释放速度，这应该使球员在投球方面取得更大的成功，并发展出更多的变化。
