Aim

This study aims to determine the changes induced by a maximal exercise test until exhaustion on the serum and urinary concentrations of Magnesium (Mg), Phosphorous (P), Rubidium (Rb) and Strontium (Sr) in athletes (AG) and sedentary students (SG).

Methods

Fifty subjects participated in the study divided into two groups. In AG there were twenty-five male athletes and in SG there were twenty-five male sedentary students. Both groups performed an exercise test until exhaustion, starting at 8 or 10 km/h respectively, and increasing the speed at 1 km/h every 400 m. Serum and urine samples were obtained from all participants before and after the test.

Results

Regarding the basal status, AG showed lower values of Mg in serum (p < 0.05) and urine (p < 0.01), but higher concentrations of serum P (p < 0.05) in comparison to SG. Comparing the pre and post-test values, corrected or non-corrected for hemoconcentration in serum and for creatinine in urine, AG showed a decrease in serum Mg (p < 0.05), in serum P (p < 0.01) and in urinary Sr (p < 0.01) while an increase was observed in urinary P (p < 0.05) and in urinary Rb (p < 0.05).

Conclusions

It can be concluded that a treadmill test until exhaustion leads to changes in serum and urinary concentrations of minerals in both AG and SG males. This may reflect an adaptive response of the body to overcome the physical stress and, in some cases, to avoid loss of these elements.

中文翻译：

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最大运动试验对运动员血清和尿中镁、磷、铷和锶浓度的影响。

目标

本研究旨在确定运动员 (AG) 和久坐学生 (AG) 的血清和尿液中镁 (Mg)、磷 (P)、铷 (Rb) 和锶 (Sr) 浓度的变化。 SG）。

方法

参与研究的五十名受试者分为两组。在 AG 有 25 名男性运动员，在 SG 有 25 名男性久坐不动的学生。两组都进行了运动测试直到筋疲力尽，分别以8或10公里/小时的速度开始，每400米以1公里/小时的速度增加速度。测试前后从所有参与者那里获取血清和尿液样本。

结果

关于基础状态，与 SG 相比，AG 显示血清 (p < 0.05) 和尿液 (p < 0.01) 中的 Mg 值较低，但血清 P 浓度较高 (p < 0.05)。比较测试前和测试后的值，校正或未校正血清中的血液浓度和尿液中的肌酐，AG 显示血清 Mg (p < 0.05)、血清 P (p < 0.01) 和尿 Sr ( p < 0.01) 而在尿 P (p < 0.05) 和尿 Rb (p < 0.05) 中观察到增加。

结论

可以得出结论，直到精疲力竭的跑步机测试都会导致 AG 和 SG 男性的血清和尿液矿物质浓度发生变化。这可能反映了身体为克服身体压力以及在某些情况下避免失去这些元素的适应性反应。