Low eccentric hip adduction strength increases the risk of hip adductor injury in football and ice hockey,1 2 emphasising the role of implementing strategies to target this. The Copenhagen Adduction exercise3 (video: www.youtube.com/watch?v=L6qfTLKhjnk) has achieved popularity in the sports medicine community. The exercise can be performed at pitch side without equipment,3 and elicits high muscle activity in the adductor longus3 and large eccentric hip adduction strength gains.4 These attributes facilitated the trial by Haroy et al ; a prevention study that reported a 41% reduction of groin problems in football players following a Copenhagen Adduction exercise intervention initiated in the pre-season and maintained in the in-season.5 While bodyweight exercises, such as the Copenhagen Adduction exercise, are feasible for on-field implementation, such exercises have traditionally been questioned by exercise scientists and specialist in terms of their ability to elicit large strength gains, as progression relies mainly on adding more repetitions, rather that increasing exercise intensity.6 However, since the number of repetitions is the most clinically applicable progression variable for the Copenhagen Adduction exercise, understanding how this associates with improvements in hip adduction strength is important when prescribing the exercise for risk mitigation. Therefore, the purpose of this editorial is to analyse and discuss the role of training volume (number of repetitions and time under tension) as a simple progression principle to elicit eccentric hip …

中文翻译：

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哥本哈根内收运动可以增加离心力量并降低腹股沟问题的风险：但多少就足够了！

低离心髋内收力量增加了足球和冰球运动中髋内收肌损伤的风险，1 2 强调了针对此问题实施策略的作用。哥本哈根内收练习 3（视频：www.youtube.com/watch?v=L6qfTLKhjnk）在运动医学界已广受欢迎。该练习可以在没有设备的情况下在俯仰侧进行 3，并引起长内收肌的高肌肉活动 3 和较大的离心髋内收力量增益。4 这些属性促进了 Haroy 等人的试验；一项预防研究报告称，在季前开始并在赛季期间进行哥本哈根内收运动干预后，足球运动员的腹股沟问题减少了 41%。5 虽然体重运动（例如哥本哈根内收运动）对于现场实施，传统上，运动科学家和专家质疑此类运动能否获得较大的力量增长，因为进展主要依赖于增加更多的重复次数，而不是增加运动强度。 6 然而，由于重复次数是临床上最适用的哥本哈根内收运动的进展变量，了解这如何与髋关节内收力量的提高相关联，在制定该运动以降低风险时非常重要。因此，这篇社论的目的是分析和讨论训练量（重复次数和紧张时间）作为一个简单的进展原则来引发偏心髋关节的作用……