Aim The aim of the present study was to evaluate the possible effect of a period of 6 months of aerobic physical training on serum and urinary concentrations of arsenic (As), beryllium (Be), cadmium (Cd) and lead (Pb), potentially toxic minerals. Methods Twenty-four well-trained, long distance runners (AG), were recruited at the start of their training period. They had been performing training regularly for the previous 2 years, recording an average volume of 120 km per week of rigorous aerobic exercise aimed at high-level competitions (1500 and 5000 m race modalities). Twenty-six untrained, sedentary participants constituted the control group (CG). All participants had been living in the same geographic area for at least 2 years before the start of the survey. Serum and urine samples were obtained from each participant at the beginning and at the end of the 6 months of the training program. The values of each mineral were determined by inductively coupled plasma mass spectrometry (ICP-MS). Additionally, the daily intake of each mineral was evaluated at both moments in time. Results The daily concentrations of trace elements in the diet were similar at the start and the end of the training period without differences between groups. In serum, significant differences between groups were observed in As, Cd and Pb ( p < 0.05). Attending to time effects, a significant difference was obtained in Pb ( p < 0.05). In urine, significant differences between groups were obtained in all minerals ( p < 0.05). According to training period, significant differences were observed in As, Be and Pb ( p < 0.05). Finally, the group x time interaction revealed significant differences in As and Be ( p < 0.05). Conclusions Aerobic training may constitute a possibly effective method for increasing the elimination of Cd and Pb potentially toxic minerals from the body, especially among highly trained individuals.

中文翻译：

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有氧运动员和久坐人群经过六个月的有氧训练后血清和尿液中砷、铍、镉和铅的浓度

目的 本研究的目的是评估为期 6 个月的有氧体能训练对砷 (As)、铍 (Be)、镉 (Cd) 和铅 (Pb) 的血清和尿液浓度可能产生的影响，可能有毒矿物质。方法 在训练开始时招募了 24 名训练有素的长跑运动员 (AG)。在过去的 2 年里，他们一直定期进行训练，记录了平均每周 120 公里的针对高水平比赛（1500 米和 5000 米比赛方式）的严格有氧运动量。26 名未经训练、久坐不动的参与者构成了对照组 (CG)。在调查开始前，所有参与者都在同一地理区域生活了至少 2 年。在 6 个月的培训计划开始和结束时，从每个参与者那里获取血清和尿液样本。每种矿物的值通过电感耦合等离子体质谱法 (ICP-MS) 确定。此外，在这两个时刻评估了每种矿物质的每日摄入量。结果 训练期开始和结束时饮食中微量元素的日浓度相似，组间没有差异。在血清中，在 As、Cd 和 Pb 中观察到组间显着差异（ p < 0.05）。考虑到时间效应，Pb 有显着差异（p < 0.05）。在尿液中，所有矿物质的组间差异显着（p < 0.05）。根据训练时间，在 As、Be 和 Pb 中观察到显着差异（ p < 0.05）。最后，组 x 时间交互显示 As 和 Be 的显着差异（ p < 0.05）。结论 有氧训练可能是一种可能有效的方法，可以增加从体内清除潜在有毒矿物质的 Cd 和 Pb，尤其是在训练有素的个体中。