This study investigates the effect of whole body exposure to magnetic fields on the calcium level of blood and bone in a trial to avoid the liability of osteoporosis, fractures, and delayed union of fractures after exposure to magnetic fields present everywhere in the environment. The procedures of the study included analysis for calcium level in both bone and blood. The procedures were performed on 50 Guinea pigs equally divided into 5 groups. Groups A, B, C, and D were exposed to 50 Hz, 0.2 mT magnetic field for 30 d. Group E animals were the control. Group A was sacrificed immediately after exposure; Group B was left away from the field for 15 d for spontaneous repair; Group C received the drug Centrum dissolved in drinking water for 15 d after exposure to the magnetic field; and Group D received centrum in drinking water during the period of exposure (30 d). After sacrificing all animals, the calcium level in both bone and blood was evaluated. Values of blood analysis revealed significant increase in the blood calcium level in exposed animals compared with the control group (P < 0.002) with excess in Group A. This indicated that the calcium left the bone to the blood. Values of the bone analysis revealed significant decrease in bone calcium concentration level in Group A compared with the control group and improvement in the bone condition in Groups C and D, indicating the role of trace element after the exposure period as a compensatory agent of magnetic field damage and its role during the exposure period as a radio-protecting agent.

中文翻译：

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暴露于 50 Hz 磁场中的骨钙损失

本研究调查了全身暴露于磁场对血液和骨骼钙水平的影响，以避免骨质疏松症、骨折和暴露于环境中无处不在的磁场后骨折延迟愈合的责任。该研究的程序包括分析骨骼和血液中的钙水平。对 50 只豚鼠进行手术，平均分为 5 组。A、B、C 和 D 组暴露于 50 Hz、0.2 mT 的磁场中 30 天。E组动物为对照。A组暴露后立即处死；B组自发修复离场15 d；C组暴露于磁场后，将药物Centrum溶于饮用水中15 d；D组在暴露期间（30天）在饮用水中接受中枢。处死所有动物后，评估骨骼和血液中的钙含量。血液分析值显示，与对照组相比，暴露动物的血钙水平显着增加 (P < 0.002)，而 A 组过量。这表明钙离开骨骼进入血液。骨分析值显示A组与对照组相比骨钙浓度水平显着降低，C组和D组骨状况有所改善，表明暴露期后微量元素作为磁场补偿剂的作用损伤及其在暴露期间作为辐射防护剂的作用。评估了骨骼和血液中的钙含量。血液分析值显示，与对照组相比，暴露动物的血钙水平显着增加 (P < 0.002)，而 A 组过量。这表明钙离开骨骼进入血液。骨分析值显示A组与对照组相比骨钙浓度水平显着降低，C组和D组骨状况有所改善，表明暴露期后微量元素作为磁场补偿剂的作用损伤及其在暴露期间作为辐射防护剂的作用。评估了骨骼和血液中的钙含量。血液分析值显示，与对照组相比，暴露动物的血钙水平显着增加 (P < 0.002)，而 A 组过量。这表明钙离开骨骼进入血液。骨分析值显示A组与对照组相比骨钙浓度水平显着降低，C组和D组骨状况有所改善，表明微量元素在暴露期后作为磁场补偿剂的作用损伤及其在暴露期间作为辐射防护剂的作用。这表明钙离开骨骼进入血液。骨分析值显示A组与对照组相比骨钙浓度水平显着降低，C组和D组骨状况有所改善，表明暴露期后微量元素作为磁场补偿剂的作用损伤及其在暴露期间作为辐射防护剂的作用。这表明钙离开骨骼进入血液。骨分析值显示A组与对照组相比骨钙浓度水平显着降低，C组和D组骨状况有所改善，表明暴露期后微量元素作为磁场补偿剂的作用损伤及其在暴露期间作为辐射防护剂的作用。