TY - JOUR
T1 - Development of pseudoanemia in marathon runners during a 20-day road race
AU - Dressendorfer, R. H.
AU - Wade, C. E.
AU - Amsterdam, E. A.
PY - 1981
Y1 - 1981
N2 - We measured RBC count, blood hemoglobin concentration, and related hematologic factors in 12 male marathon runners during a 20-day, 312-mile road race. The RBC and hemoglobin levels decreased significantly, from 5.17 million per cubic millimeter and 16.0 g/dL, respectively, to 4.36 million per cubic millimeter and 13.4 g/dL. Although the runners became marginally anemic during the race, their running speeds were not signficantly changed. There were no abnormal clinical signs other than rare instances of hematuria. This study indicates that a sudden increase in long-distance running mileage above the regular training level may cause 'sports anemia', a functional pseudoanemia that, in mild cases, does not impair endurance performance.
AB - We measured RBC count, blood hemoglobin concentration, and related hematologic factors in 12 male marathon runners during a 20-day, 312-mile road race. The RBC and hemoglobin levels decreased significantly, from 5.17 million per cubic millimeter and 16.0 g/dL, respectively, to 4.36 million per cubic millimeter and 13.4 g/dL. Although the runners became marginally anemic during the race, their running speeds were not signficantly changed. There were no abnormal clinical signs other than rare instances of hematuria. This study indicates that a sudden increase in long-distance running mileage above the regular training level may cause 'sports anemia', a functional pseudoanemia that, in mild cases, does not impair endurance performance.
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U2 - 10.1001/jama.246.11.1215
DO - 10.1001/jama.246.11.1215
M3 - Article
C2 - 7265409
AN - SCOPUS:0019406164
VL - 246
SP - 1215
EP - 1218
JO - JAMA - Journal of the American Medical Association
JF - JAMA - Journal of the American Medical Association
SN - 0002-9955
IS - 11
ER -