Analyse biomécanique de l'interface main-raquette lors de la pratique du tennis : applications à l'étude du tennis elbow.
Analyse biomécanique de l'interface main-raquette lors de la pratique du tennis : applications à l'étude du tennis elbow.
复制标题
分析网球实践主要界面的生物力学：在网球肘研究中的应用。
DOI：
--
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
J. Rossi
中科院分区：
文献类型：
--
作者：
J. Rossi
据报道，40%至50%的网球运动员和大量使用手工工具的工人中至少发生过一次外上髁痛（LE）。尽管发病率很高，但网球肘发展的机制却自相矛盾地被误解了，并且缺乏科学共识。被处理的工具的特征（例如握柄的大小和形状）被认为是这些疾病发生的部分原因。然而，现有的调查材料和技术以及程序研究并没有为这一假设提供证据。在这项工作中，网球拍手柄的大小和形状会影响患网球肘的风险，这一观点分为三个主要步骤进行了测试。首先，进行了一种控制实验方法，以量化手/手柄界面在挤压手柄时施加的力。开发了一种特殊的力测力计来测量手/手柄界面的力。这项研究使我们能够定义一个最佳的尺寸和形状（即圆形周长等于手长度的18%）来执行最大的挤压力。第二步，在网球击球过程中测试最佳手柄。我们的研究结果表明，在有无疲劳的情况下，与较大或较小的手柄相比，最佳手柄的握力较低。最后，在最后一步中，使用手的生物力学模型来评估网球拍握拍尺寸对模拟中受网球肘影响的肌肉施加的力的影响。我们的研究结果表明，最佳握力大小可以减少手伸肌的肌肉张力。
Lateral epicondylalgia (LE) have been reported to occur at least once in a range of 40% to 50% of tennis players and in a large number of workers using hand tools. Despite high prevalence, the mechanisms underlying the development of tennis elbow are paradoxically misunderstood and suffer from a lack of scientific consensus. The characteristics of the handled tools (e.g. the grip size and the shape) are believed to be partly responsible for the occurrence of these disorders. However, the available material and technique for investigation and the proceedings studies did not gave evidence for this hypothesis. In this work, the idea that the size and shape of a tennis racket handle can affect the risk of developing tennis elbow was tested in three main steps. First, a controlled experimental approach was performed in order to quantify the forces exerted at the interface hand / handle when squeezing simply a handle. A special force ergometer has been developed to measure the forces at the hand/handle interface. This study enabled us to define an optimal size and shape (i.e. circular perimeter equal to 18% of the length of the hand) to perform a maximal squeezing force. In a second step, the optimal handle was tested during tennis strokes. Our results show that with and without fatigue, the grip force was lower for the optimal handle compared to bigger or smaller handle. Finally, in a last step, a biomechanical model of the hand was used to assess the impact of the tennis racket grip size on the forces applied on muscles affected by tennis elbow during a simulation. Our results suggest that the optimal grip size reduces muscle tensions of hand extensor muscle.