Low-to-moderate altitude (2000–2500 m) training camps are an integral part of many athletes’ training programmes.1 Despite potential positive effects on performance, sojourning at altitude represents an important stress on the human body with transiently increased pulmonary and kidney stress, neuroendocrine dysregulation and immune perturbations.2 This highlights the importance of the careful planning and organisation of altitude training camps, which may be even more critical during the current COVID-19 pandemic. Preliminary reports suggest that hypoxaemia and inflammation induced by COVID-19 result in heterogenous lung injury and acute respiratory distress syndrome, eventually leading to acute respiratory failure.3 Some authors have also speculated that COVID-19-induced acute respiratory distress syndrome may share some similarities with high-altitude pulmonary oedema.4 Even though COVID-19 is primarily a respiratory disease, it can also negatively affect the cardiovascular system, exposing affected patients to myocarditis or myocardial damage.5 Moreover, COVID-19 may impair renal function as well as the circulatory and the immune system. As we move towards the gradual resumption of normal life once the COVID-19 emergency subsides, athletes will also seek to resume their regular training.6 With the cancellation or postponement of almost half of the scheduled sporting events in 2020 (eg, the Tokyo Olympics, many of the cycling tours, World Marathon …

中文翻译：

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在 COVID-19 大流行后保护运动员健康的高原训练计划建议

中低海拔（2000-2500 米）训练营是许多运动员训练计划中不可或缺的一部分。1 尽管对表现有潜在的积极影响，但在高海拔逗留对人体来说是一种重要的压力，会暂时增加肺和肾脏压力、神经内分泌失调和免疫紊乱。2 这凸显了精心规划和组织高原训练营的重要性，这在当前的 COVID-19 大流行期间可能更为重要。初步报告表明，COVID-19 引起的低氧血症和炎症导致异质性肺损伤和急性呼吸窘迫综合征，最终导致急性呼吸衰竭。3 一些作者还推测，COVID-19 引起的急性呼吸窘迫综合征可能与高原肺水肿有一些相似之处。 4 尽管 COVID-19 主要是一种呼吸系统疾病，但它也会对心血管系统产生负面影响，暴露受影响的5 此外，COVID-19 可能会损害肾功能以及循环系统和免疫系统。随着 COVID-19 紧急情况平息后我们逐步恢复正常生活，运动员也将寻求恢复正常训练。6 随着 2020 年几乎一半的预定体育赛事（例如东京奥运会）取消或推迟，许多自行车之旅，世界马拉松…… 它还会对心血管系统产生负面影响，使受影响的患者暴露于心肌炎或心肌损伤。5 此外，COVID-19 可能会损害肾功能以及循环系统和免疫系统。随着 COVID-19 紧急情况平息后我们逐步恢复正常生活，运动员也将寻求恢复正常训练。6 随着 2020 年几乎一半的预定体育赛事（例如东京奥运会）取消或推迟，许多自行车之旅，世界马拉松…… 它还会对心血管系统产生负面影响，使受影响的患者暴露于心肌炎或心肌损伤。5 此外，COVID-19 可能会损害肾功能以及循环系统和免疫系统。随着 COVID-19 紧急情况平息后我们逐步恢复正常生活，运动员也将寻求恢复正常训练。6 随着 2020 年几乎一半的预定体育赛事（例如东京奥运会）取消或推迟，许多自行车之旅，世界马拉松……