KNEE PAIN in joggers is prevalent(普遍的，盛行的) enough to be a term of art(专业术语). “Runner’s knee”, an ache around the kneecap, was among the most common complaints in a study of 3,669 runners published in the Orthopaedic Journal of Sports Medicine (OJSM) in 2021. But it is only one of an assortment(各种各样的一类) of “overuse” injuries: those caused by training that, though tolerable in parts, cumulatively exceed the body’s capacity to recover(这类损伤源于训练——单次尚可承受，累积起来却超出身体的恢复能力).
慢跑者的膝盖疼痛如此普遍，以至于成了一个专业术语。2021年发表于《骨科运动医学杂志》（OJSM）的一项研究调查了3669名跑者，“跑步膝”——膝盖骨周围的酸痛——是其中最常见的抱怨之一。但这只是形形色色“过度使用性”损伤中的一种：这类损伤源于训练——单次尚可承受，累积起来却超出了身体的恢复能力。
Such problems can compound(使加剧，叠加恶化). The study found that a previous injury increased the odds of(……的几率) another by 62%. Hence a widespread worry that a lifetime of running will wear down(磨损，逐渐消耗) joints and eventually lead to arthritis. How can runners keep injuries at bay?
这类问题会叠加恶化。该研究发现，既往受伤会使再次受伤的几率增加62%。于是人们普遍担心：一辈子跑步会磨损关节，最终导致关节炎。跑者该如何把伤病挡在门外？
Throwing money at the problem does not help. A review published in the Cochrane Database of Systematic Reviews, in 2022, found little evidence that different running-shoe designs affect their owners’ susceptibility to injury.(2022年《科克伦系统综述数据库》的一篇综述发现，几乎没有证据表明不同跑鞋设计会影响穿着者的受伤易感性) The OJSM study from 2021 concluded that stretching before a jog did not help, either.
砸钱解决不了问题。2022年发表于《科克伦系统综述数据库》的一篇综述发现，几乎没有证据表明不同跑鞋设计会影响穿着者受伤的易感性。2021年那项OJSM研究也得出结论：跑前拉伸同样无济于事。