[Effects of lithium on serum calcium, magnesium and inorganic phosphorus after exercise in rats].

Exercise, in patients on lithium (Li) treatment, causes alterations in serum concentration of this element, not well established yet. Besides, lithium treatment and exercise practice bring about variations in the serum levels of other mineral elements. This paper intends to analyze these variations in rats with and without lithium treatment after training and exhausting exercise. In normal rats, lithium treatment increases serum concentrations in all ions analyzed, larger than those found in the trained rats having received lithium treatment. In rats treated with Li, training (15 min/day during one week), significatively decreases serum concentration in this element, while exhausting exercise did not offer significant results. In normal rats, exhausting exercise causes serum increases of Ca, Mg and Pi; in rats treated with lithium, when compared with normal rats plus exhaustion, greater increases of serum Ca stand out, while Mg concentrations are smaller. Training arises serum Mg and Pi in normal rats; while it increases serum Ca in rats treated with Li.