Biodynamics Group, Imperial College London, UK.
J Sports Sci Med. 2007 Mar 1;6(1):29-35. eCollection 2007.
Earlier studies have investigated the biomechanics of rowing during step testing with a focus on lumbo-pelvic kinematics and force output and noted that these parameters change with work intensity. The aim of this study was to investigate how the biomechanics of the rowing stroke changes over time as a result of coaching and training and to see if these change were related to a change in physiological performance. An electromagnetic motion measuring device in conjunction with a load cell was used to determine the ergometer rowing kinematics of 7 elite international oarswomen during routine step tests over a two year period. Force output was observed to improve over the two year time period, with peak force significantly rising by 40-80 N. This was associated with significant increases in stroke length of between 15 and 19 cm. Both of these are indicative of improvement in performance. Kinematic variables were also observed to change, with greater pelvic rotation and associated lumbar spine motion at the later time point. The findings of this study demonstrate that rowing technique changes with time, and suggest that kinematics measures of rowing technique may be important tools to monitor athletes. Key pointsKinematics of rowing technique change with time and reflect improvements in performanceImproved kinematics appear to be associated with improved rowing efficiencyImprovement in stroke length linked in part to improvements in lumbo-pelvic technique.
先前的研究已经调查了划桨在台阶测试中的生物力学，重点是腰骨盆运动学和力量输出，并指出这些参数随着工作强度的变化而变化。本研究的目的是研究由于教练和训练，划桨动作的生物力学如何随时间变化，以及这些变化是否与生理性能的变化有关。在两年的时间里，使用电磁运动测量装置和一个测力传感器，对 7 名国际精英赛艇运动员在常规台阶测试中的测功机划桨运动学进行了测量。在两年的时间里，观察到力量输出得到了改善，峰值力量显著提高了 40-80N。这与划桨长度的显著增加（15-19cm）有关。这两者都表明性能得到了提高。运动学变量也发生了变化，在稍后的时间点，骨盆旋转和相关的腰椎运动增加。本研究的结果表明，划桨技术随时间而变化，并表明划桨技术的运动学测量可能是监测运动员的重要工具。关键点划桨技术的运动学随时间而变化，并反映出性能的提高。运动学的改善似乎与划桨效率的提高有关。划桨长度的提高部分与腰骨盆技术的提高有关。
