The biological association between electromagnetic fields (EMF) and idiopathic environmental intolerance attributed to EMF (IEI-EMF) has not been established. To assess the physiological changes and symptoms associated with exposure to EMF, we conducted a randomized crossover provocation study. We recruited 58 individuals with IEI-EMF (IEI-EMF group) and 92 individuals without IEI-EMF (control group). In a controlled environment, all participants received EMF signals mimicking those from mobile phone base stations in a randomized sequence under the blinded condition. During the course, participants reported their symptoms and whether they perceived EMF, and we monitored their physiological parameters, including blood pressure (BP), heart rate (HR), and HR variability. The IEI-EMF and control groups reported similar frequencies of symptoms during both the provocation and sham sessions. No participant could accurately identify the provocation. In both groups, physiological parameters were similar between the two sessions. The control group, but not the IEI-EMF group, had elevated HR when they perceived EMF exposure. No symptoms or changes in physiological parameters were found to be associated with short-term exposure to EMF, and no participant could accurately detect the presence of EMF. Moreover, the participants in the control group, but not those in the IEI-EMF group, had elevated HR when they perceived EMF.

中文翻译：

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与短期暴露于电磁场相关的生理变化和症状：一项随机交叉激发研究

尚未确定电磁场 (EMF) 与归因于 EMF (IEI-EMF) 的特发性环境不耐受之间的生物学关联。为了评估与暴露于 EMF 相关的生理变化和症状，我们进行了一项随机交叉激发研究。我们招募了 58 名具有 IEI-EMF 的人（IEI-EMF 组）和 92 名没有 IEI-EMF 的人（对照组）。在受控环境中，所有参与者在盲态条件下以随机顺序接收到模拟来自手机基站的 EMF 信号。在课程中，参与者报告了他们的症状以及他们是否感知到 EMF，我们监测了他们的生理参数，包括血压 (BP)、心率 (HR) 和 HR 变异性。IEI-EMF 和对照组在挑衅和假会话期间报告了相似的症状频率。没有参与者能够准确地识别出挑衅。在两组中，两个疗程之间的生理参数相似。对照组（而不是 IEI-EMF 组）在感知 EMF 暴露时 HR 升高。没有发现任何症状或生理参数的变化与短期暴露于 EMF 相关，并且没有参与者能够准确地检测到 EMF 的存在。此外，对照组的参与者（而不是 IEI-EMF 组的参与者）在感知 EMF 时 HR 升高。但 IEI-EMF 组在感知 EMF 暴露时 HR 升高。没有发现任何症状或生理参数的变化与短期暴露于 EMF 相关，并且没有参与者能够准确地检测到 EMF 的存在。此外，对照组的参与者（而不是 IEI-EMF 组的参与者）在感知 EMF 时 HR 升高。但 IEI-EMF 组在感知 EMF 暴露时 HR 升高。没有发现任何症状或生理参数的变化与短期暴露于 EMF 相关，并且没有参与者能够准确地检测到 EMF 的存在。此外，对照组的参与者（而不是 IEI-EMF 组的参与者）在感知 EMF 时 HR 升高。