Effect of HCE (498 mg/Kg), administrated orally to acute exercised rats, on the density of macrophages in the tibialis anterior muscle. The number of cells per 0.625 mm2 area was determined in muscles of rested control rats (1); acutely exercised rats (2); rested rats treated with HCE (3); acutely exercised rats treated with HCE 0.5 h before exercise (4) and acutely exercised rats treated with HCE 0.5 h after exercise (5). The number of cells was determined at 6 h (A) and 48 h (B) after acute exercise. Each column shows the mean ± SE of 15 randomly selected fields of 8–10 rats. Significance was determined with one-way ANOVA followed by the Tukey-Kramer test. Columns with different letters differed significantly (p < 0.05).