Tubez François, Forthomme Bénédicte, Croisier Jean-Louis, Cordonnier Caroline, Brüls Olivier, Denoël Vincent, Berwart Gilles, Joris Maurice, Grosdent Stéphanie, Schwartz Cédric
Laboratory of Human Motion Analysis (LAMH), University of Liège , Belgium ; Physiotherapy Department, Haute École Robert Schuman (HERS) , Libramont, Belgium ; Department of Sport and Rehabilitation Sciences, University of Liège , Belgium.
Laboratory of Human Motion Analysis (LAMH), University of Liège , Belgium ; Department of Sport and Rehabilitation Sciences, University of Liège , Belgium ; University Hospital Center of Liège , Liège, Belgium.
J Sports Sci Med. 2015 May 8;14(2):402-12. eCollection 2015 Jun.
The serve is an important stroke in any high level tennis game. A well-mastered serve is a substantial advantage for players. However, because of its repeatability and its intensity, this stroke is potentially deleterious for upper limbs, lower limbs and trunk. The trunk is a vital link in the production and transfer of energy from the lower limbs to the upper limbs; therefore, kinematic disorder could be a potential source of risk for trunk injury in tennis. This research studies the case of a professional tennis player who has suffered from a medical tear on the left rectus abdominis muscle after tennis serve. The goal of the study is to understand whether the injury could be explained by an inappropriate technique. For this purpose, we analyzed in three dimensions the kinematic and kinetic aspects of the serve. We also performed isokinetic tests of the player's knees. We then compared the player to five other professional players as reference. We observed a possible deficit of energy transfer because of an important anterior pelvis tilt. Some compensation made by the player during the serve could be a possible higher abdominal contraction and a larger shoulder external rotation. These particularities could induce an abdominal overwork that could explain the first injury and may provoke further injuries. Key pointsIn the proximal-distal sequence, energy is transmitted from lower limbs to upper limps via trunk.The 3D analysis tool is an indispensable test for an objective evaluation of the kinematic in the tennis serve.Multiple evaluations techniques are useful for fuller comprehension of the kinematics and contribute to the awareness of the player's staff concerning pathologies and performance.
在任何高水平网球比赛中，发球都是一项重要的击球动作。熟练掌握发球对球员来说是一项巨大的优势。然而，由于发球动作的重复性及其强度，该动作对上肢、下肢和躯干有潜在危害。躯干是能量从下肢传递到上肢过程中的关键环节；因此，运动紊乱可能是网球运动中躯干受伤的潜在风险源。本研究以一名职业网球运动员为例，他在网球发球后左侧腹直肌出现了医源性撕裂。该研究的目的是了解这种损伤是否可以用不恰当的技术动作来解释。为此，我们从三维角度分析了发球的运动学和动力学方面。我们还对该球员的膝盖进行了等速测试。然后将该球员与其他五名职业球员作为参照进行比较。我们观察到由于骨盆前倾过大可能存在能量传递不足的情况。该球员在发球过程中进行的一些代偿动作可能是更强的腹部收缩和更大幅度的肩部外旋。这些特点可能导致腹部过度劳累，这可以解释首次受伤的原因，并且可能引发进一步的损伤。关键点在近端到远端的顺序中，能量通过躯干从下肢传递到上肢。三维分析工具是客观评估网球发球运动学不可或缺的测试手段。多种评估技术有助于更全面地理解运动学，并有助于球员团队了解病理情况和运动表现。
