英国厄尔斯特论文代写:重要决定因素

Keywords:英国厄尔斯特论文代写:重要决定因素

据说是球速度的一个重要决定因素。Manolopoulos等人(2006)指出，更大的小腿速度意味着更“有力”的一击，Manolopoulous等(2006)的研究得出结论，在10周的时间内，力量和搏动协调训练方案可以导致线段角速度的提高。Barfield等人(2002)进行的一项研究发现，更大的球速度被发现在远端部分的角速度较大(在男性球员中)。从这一文献可以推测，一个具有高下肢速度的人应该有一个高的球速度。有理论认为，方法的长度、速度和角度是准备阶段最重要的方面，在运动前，对足球踢成功有显著影响(Isokawa & Lees, 1988;凯利斯等人,2004)。执行当足球踢的运动员可能会把球踢一个固定位置或方法球从一定距离(凯瑟琳& >,2007),Opavsky球(1988)指出,高速度运行时建立的方法,至少两到三个步骤,球与一个停滞不前的方法。另一个重要的一点是球在大多数情况下会向球员移动;因此，球员不会像往常一样在实验室条件下击球，这是由Tol等(2002)所支持的。Kellis和Katis(2007)指出，在竞争中，较高的球速值与实验室环境形成对比。
英国厄尔斯特论文代写:重要决定因素
are said to be an important determinant of ball velocity. Manolopoulos et al (2006) state that a greater shank velocity is indicative of a more "powerful" shot, the study conducted by Manolopoulous et al (2006) concluded that a strength and kick co-ordination training programme over a ten week period can cause an improvement in angular velocities of segments. A study conducted by Barfield et al (2002) found that a greater ball velocity was found with greater angular velocity of the distal segment (in male footballers). From this literature it can be assumed that a person with a high lower limb velocity should have a high ball velocity. It has been theorised that the length, speed and angle of approach are the most important aspects of the preparatory phase, before movement transpires, having a significant effect on football kick success (Isokawa & Lees, 1988; Kellis et al, 2004).When a football kick is performed the athlete may kick the ball from a stationary position or approach the ball from a certain distance (Kathis & Kellis, 2007), Opavsky (1988) states that higher ball velocities are established when there is a running approach, of at least two to three steps, to the ball in contrast to a stagnant approach. Another important point is that a ball will in most cases be moving towards the player; consequently the player will not be hitting a stationary ball as is often the case in laboratory conditions, supported by Tol et al (2002). Kellis and Katis (2007) state that higher ball speed values have been during competition in contrast to a laboratory setting.