Table 1.
Haematological changes in middle-trained athletes undergoing a half-marathon run.
| Baseline | Post run | After 3 h | After 20 h | |
|---|---|---|---|---|
| RBC (1012/L) | 4.9 (4.6–5.1) | 4.8† (4.5–5.1) | 4.6‡ (4.3–4.9) | 4.7‡ (4.4–4.9) |
| Hemoglobin (g/L) | 149 (145–155) | 148† (140–155) | 142‡ (136–148) | 144‡ (139–150) |
| MCV (fL) | 94.9 (91.9–96.3) | 95.3† (93.5–97.3) | 94.1 (92.3–95.8) | 94.9 (91.5–97.1) |
| MCH (pg) | 31.0 (30.0–31.1) | 31.5 (30.0–32.0) | 31.0 (30.3–32.8) | 30.5 (30.0–32.0) |
| RDW (%) | 13.3 (13.1–13.5) | 13.4† (13.1–13.6) | 13.4‡ (13.2–13.6) | 13.5‡ (13.3–13.8) |
| Reticulocytes (109/L) | 60.5 (49.5–72.5) | 60.4 (49.6–74.2) | 58.0‡ (46.7–69.3) | 59.7‡ (46.9–65.9) |
| Ret CHR (pg) | 31.0 (31.0–32.0) | 31.0 (31.0–32.0) | 31.0 (31.0–32.0) | 31.0 (31.0–32.0) |
| Platelets (109/L) | 255 (216–298) | 311‡ (264–361) | 263 (219–290) | 255 (212–290) |
| MPV (fL) | 9.2 (8.6–9.9) | 9.5‡ (9.1–10.2) | 9.1 (8.1–9.4) | 9.2 (8.7–9.7) |
† P < 0.05 compared to baseline; ‡ P < 0.01 compared to baseline.
MCH: mean corpuscular hemoglobin; MCV: mean corpuscular volume; MPV: mean platelet volume; RBC: red blood cell; RDW: RBC distribution width; Ret CHR: reticulocyte hemoglobin concentration.