Advice and taboos regarding physical activity (PA) during pregnancy have varied widely throughout history, often reflecting the cultural norms and status of pregnant individuals of the day. The first formal set of guidelines for prenatal PA was published by the American College of Obstetricians and Gynecologists in 1985. Prior to these recommendations, pregnant individuals were encouraged to ‘rest and relax’ and strenuous activity was strongly discouraged. However, over the last 40 years there has been an explosion of data demonstrating not only the safety but also the benefits of engaging in prenatal PA. Currently, guidelines from around the world recommend all pregnant individuals without a medical condition that would preclude PA, engage in at least 150 min of moderate-to-vigorous intensity PA each week to improve maternal and fetal health. However, these documents primarily focus on leisure-time PA (LTPA). In contrast to clear benefits of LTPA, emerging literature suggest excessive prenatal occupational PA may actually be harmful to both mother and fetus.1 2 The conflicting health effects of LTPA and …

中文翻译：

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产前身体活动悖论：职业与休闲时间的身体活动

关于怀孕期间身体活动 (PA) 的建议和禁忌在整个历史上都有很大的不同，通常反映了当时怀孕个体的文化规范和地位。1985 年，美国妇产科学院发布了第一套正式的产前 PA 指南。在这些建议之前，鼓励孕妇“休息和放松”，强烈反对剧烈活动。然而，在过去的 40 年中，大量数据不仅证明了进行产前 PA 的安全性，而且还证明了其益处。目前，来自世界各地的指南建议所有没有身体状况的孕妇每周至少进行 150 分钟的中等至高强度的 PA，以改善母体和胎儿的健康。然而，这些文件主要关注休闲时间 PA (LTPA)。与 LTPA 的明显益处相反，新出现的文献表明，过度的产前职业性 PA 实际上可能对母亲和胎儿都有害。1 2 LTPA 对健康的影响和……