Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, USA.
Sports Biomech. 2009 Nov;8(4):345-59. doi: 10.1080/14763140903437103.
In this work, we describe a simple coarse-grained model of a barbell that can be used to determine the qualitative role of bar bend during a jerk. In simulations of this model, we observed a narrow time window during which the lifter can leverage the elasticity of the bar in order to lift the weight to a maximal height. This time window shifted to later times as the weight was increased. In addition, we found that the optimal time to initiate the drive was strongly correlated with the time at which the bar had reached a maximum upward velocity after recoiling. By isolating the effect of the bar, we obtained a generalized strategy for lifting heavy weight in the jerk.
在这项工作中，我们描述了一个简单的杠铃粗粒模型，可用于确定挺举过程中杠铃弯曲的定性作用。在这个模型的模拟中，我们观察到一个狭窄的时间窗口，在这个时间窗口内，举重运动员可以利用杠铃的弹性将重量提升到最大高度。随着重量的增加，这个时间窗口会向后推移。此外，我们发现启动驱动的最佳时间与杠铃在回弹后达到最大向上速度的时间密切相关。通过隔离杠铃的影响，我们得到了一种在挺举中举起重物的通用策略。
