Background: CrossFit is one of the fastest growing “high-intensity functional training” methods in recent years. Due to the very demanding motion sequences and high loads, it was initially assumed that there was an extremely high risk of injury. However, studies have shown that injury rates are given between 0.74–3.3 per 1000 h of training, which is not higher than in other individual sports such as weightlifting. The purpose of the study was to estimate the type of pain symptoms that are directly related to CrossFit, to estimate the frequency of injuries that occur within a population of recreational CrossFit athletes, and, finally, to identify the factors influencing the frequency of pain during CrossFit training. Methods: A total of 414 active CrossFit athletes completed an online survey inclusive of 29 items focusing on individual physical characteristics and training behavior, as well as simultaneous or previously practiced sports. Results: There was a significantly higher proportion of knee pain in athletes who had previously or simultaneously played another sport (p = 0.014). The duration, intensity, or type of personal training plan developed, along with personal information such as age, gender, or BMI, had no significant influence on the pain data. We could not find any significant variance between the groups that we formed based on the differently stated one-repetition max (RMs). There were differences in athletes who stated that they did specific accessory exercises for small muscle groups. Above all, athletes performing exercises for the hamstrings and the gluteus medius indicated fewer pain symptoms for the sacro-iliac joint (SIJ)/iliac and lower back locations. Conclusions: It is important not to see CrossFit as a single type of sport. When treating a CrossFit athlete, care should be taken to address inter-individual differences. This underlines the significant differences of this study between the individual athletes with regard to the ability to master certain skills or their previous sporting experience. The mere fact of mastering certain exercises seems to lead to significantly more pain in certain regions. In addition, there seems to be a connection between the previous or simultaneous participation in other sports and the indication of pain in the knee region.

中文翻译：

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通过CrossFit中个体间训练差异分析特定于运动的疼痛症状

背景：CrossFit是近年来发展最快的“高强度功能训练”方法之一。由于非常苛刻的运动顺序和高负荷，最初假定存在极高的受伤风险。但是，研究表明，每1000小时训练中受伤率在0.74–3.3之间，这不比其他个人运动（如举重）高。该研究的目的是估计与CrossFit直接相关的疼痛症状的类型，估计在休闲的CrossFit运动员群体中发生的伤害的频率，最后确定影响运动期间疼痛频率的因素。 CrossFit培训。方法：总共414名CrossFit活跃运动员完成了一项在线调查，其中包括29个项目，这些项目侧重于个人身体特征和训练行为，以及同时进行或以前进行的运动。结果：先前或同时进行另一项运动的运动员中，膝部疼痛的比例明显更高（p= 0.014）。制定的个人培训计划的持续时间，强度或类型，以及年龄，性别或BMI等个人信息，对疼痛数据没有显着影响。基于不同的单重复最大值（RM），我们在所组成的组之间找不到任何明显的方差。运动员表示他们针对小肌肉群进行了特定的辅助锻炼，但存在差异。最重要的是，进行for绳肌和臀中肌锻炼的运动员表明，the- sa关节（SIJ）/ ilia和下背部位置的疼痛症状更少。结论：重要的是不要将CrossFit视为一种运动。在治疗CrossFit运动员时，应注意解决个体之间的差异。这突显了该运动员之间在掌握某些技能或他们以前的运动经历方面的这项研究的显着差异。仅仅掌握某些练习的事实似乎会导致某些地区的痛苦明显增加。此外，以前或同时参加其他运动与膝盖区域疼痛的征兆之间似乎存在联系。