Investigation of optimal lower body movement in presence of the constrained pelvis rotation in baseball batting
Investigation of optimal lower body movement in presence of the constrained pelvis rotation in baseball batting
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DOI：
10.1016/j.jbiomech.2022.111219
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发表时间：
2022-07-30
影响因子：
2.4
通讯作者：
Koike, Sekiya
中科院分区：
文献类型：
--
作者：
Ae, Kazumichi;Burke, Dave;Koike, Sekiya
棒球击球是一种熟练的全身运动，正确击球需要准确的空间和时间协调;因此，它是体育运动中最困难的技能之一（DeRenne等人，2008年，种族，1961年）。如果保持击球撞击的协调，则击球性能的改善，即击球的更高速度，将由撞击时更高的击球头速度产生（Sawicki等人，2003年）。击球手使用将机械能从下半身传递到上肢和球棒的动力链来产生球棒头速度（Ae等人，2017年，Horiuchi等人，2021，Welch等人，1995年）。因此，探讨负责机械能和球棒头速度的产生的下肢运动可以为如何提高击球性能提供见解。棒球击球的生物力学研究已经确定，下肢运动在机械能和球棒头速度的产生中起着重要作用，并且已经确定了球棒和身体运动的运动学特征与球棒头速度之间的关系（Escamilla等人，2009 a，Escamilla等人，2009 b，Dowling and Fleisig，2016，Mcintyre and Pfautsch，1982，Messier and Owen，1984，Race，1961，Welch et al.，1995年）。此外，对地面反作用力的研究已经揭示了击球运动的动力学特征和每条腿对产生击球头速度的贡献（Fortenbaugh等人，2011，Katsumata，2007，Mason，1987，Messier and Owen，1985，Messier and Owen，1986）。最近，Ae et al.（2017）证明了下肢关节动力学（即关节扭矩和机械功）对骨盆绕垂直轴角速度的影响。骨盆和躯干角速度的产生可以被认为是下半身运动的关键结果，因为击球运动在很大程度上取决于躯干围绕纵向轴线的旋转（Fleisig等人，2013年，Szymanski等人，2007年）。先前的研究还表明，球撞击时的骨盆角位置是击球性能的一个影响因素（Dowling和Fleisig，2016; Escamilla等人，2009 a，Escamilla等人，2009 b，Welch等人，1995年）。虽然下半身动作和球棒头速度之间的关系的重要性已被证明，没有研究调查最佳的下半身动作，以增加骨盆角速度和骨盆角度的影响，在球的影响。
Baseball batting is a skilful whole-body motion and hitting a ball properly requires both accurate spatial and temporal coordination; thus it is one of the most difficult skills in sport (DeRenne et al., 2008, Race, 1961). If the coordination of the bat-ball impact is maintained, improved batting performance, ie, higher velocity of the batted ball, will result from higher bat-head speed at impact (Sawicki et al., 2003). Batters generate bat-head speed using a kinetic chain that transfers mechanical energy from the lower body to upper limbs and bat (Ae et al., 2017, Horiuchi et al., 2021, Welch et al., 1995). Therefore exploring the lower limb movements responsible for the generation of mechanical energy and bat-head speed can provide insight into how to improve batting performance.Biomechanical studies of baseball batting have determined that the lower body movements play an important role in the generation of mechanical energy and bat-head speed, and relationships between kinematic characteristics of the motion of the bat and body and bat-head speed have been identified (Escamilla et al., 2009a, Escamilla et al., 2009b, Dowling and Fleisig, 2016, Mcintyre and Pfautsch, 1982, Messier and Owen, 1984, Race, 1961, Welch et al., 1995). In addition, investigations of the ground reaction forces have revealed the kinetic characteristics of the batting motion and the contributions of each leg to the generation of bat-head speed (Fortenbaugh et al., 2011, Katsumata, 2007, Mason, 1987, Messier and Owen, 1985, Messier and Owen, 1986). More recently Ae et al.(2017) demonstrated the effect of lower limb joint kinetics (ie, joint torque and mechanical work) on pelvis angular velocity about the vertical axis. The generation of pelvis and trunk angular velocity can be identified as the crucial outcome of the lower body movements, as the hitting motion is largely dependent upon the rotation of the torso about the longitudinal axis (Fleisig et al., 2013, Szymanski et al., 2007). Previous research has also indicated that the pelvis angular position at ball impact is a contributing factor to batting performance (Dowling and Fleisig, 2016; Escamilla et al., 2009a, Escamilla et al., 2009b, Welch et al., 1995). Although the importance of the relationship between lower body movements and bat-head speed have been demonstrated, no study has investigated optimum lower body movements to increase the pelvis angular velocity and the effects of pelvis angle at ball impact.