Helfgott Research Institute, National College of Natural Medicine, 049 SW, Porter Street, Portland, OR 97291, USA.
Evid Based Complement Alternat Med. 2009 Jun;6(2):133-9. doi: 10.1093/ecam/nem131. Epub 2007 Oct 4.
Static magnetic field (SMF) therapy, applied via a permanent magnet attached to the skin, is used by people worldwide for self-care. Despite a lack of established SMF dosage and treatment regimens, multiple studies are conducted to evaluate SMF therapy effectiveness. Our objectives in conducting this review are to:(i) summarize SMF research conducted in humans; (ii) critically evaluate reporting quality of SMF dosages and treatment parameters and (iii) propose a set of criteria for reporting SMF treatment parameters in future clinical trials. We searched 27 electronic databases and reference lists. Only English language human studies were included. Excluded were studies of electromagnetic fields, transcranial magnetic stimulation, magnets placed on acupuncture points, animal studies, abstracts, posters and editorials. Data were extracted on clinical indication, study design and 10 essential SMF parameters. Three reviewers assessed quality of reporting and calculated a quality assessment score for each of the 10 treatment parameters. Fifty-six studies were reviewed, 42 conducted in patient populations and 14 in healthy volunteers. The SMF treatment parameters most often and most completely described were site of application, magnet support device and frequency and duration of application. Least often and least completely described were characteristics of the SMF: magnet dimensions, measured field strength and estimated distance of the magnet from the target tissue. Thirty-four (61%) of studies failed to provide enough detail about SMF dosage to permit protocol replication by other investigators. Our findings highlight the need to optimize SMF dosing parameters for individual clinical conditions before proceeding to a full-scale clinical trial.
静磁场（SMF）疗法通过贴附于皮肤的永磁体进行应用，目前已在全球范围内被人们用于自我保健。尽管缺乏既定的 SMF 剂量和治疗方案，但仍有多项研究旨在评估 SMF 疗法的有效性。我们开展本次综述的目的是：（i）总结在人类中开展的 SMF 研究；（ii）批判性评估 SMF 剂量和治疗参数的报告质量；以及（iii）提出一套用于未来临床试验中报告 SMF 治疗参数的标准。我们检索了 27 个电子数据库和参考文献列表。仅纳入了英语语言的人类研究。排除了电磁场、经颅磁刺激、置于穴位上的磁铁、动物研究、摘要、海报和社论。我们提取了关于临床适应证、研究设计和 10 个基本 SMF 参数的数据。三位评审员评估了报告质量，并为这 10 个治疗参数中的每一个计算了质量评估评分。我们对 56 项研究进行了综述，其中 42 项在患者人群中开展，14 项在健康志愿者中开展。最常和最完整描述的 SMF 治疗参数是应用部位、磁铁支撑装置以及应用的频率和时长。最不常和最不完整描述的是 SMF 的特征：磁铁尺寸、测量的磁场强度以及磁铁距目标组织的估计距离。34 项（61%）研究未提供足够详细的 SMF 剂量信息，使得其他研究者无法复制其方案。我们的研究结果强调了在进行全面临床试验之前，针对个体临床情况优化 SMF 剂量参数的必要性。
