Anemia During Physical Training (Sports Anemia)

Yoshimura, Hisato

doi:10.1111/j.1753-4887.1970.tb06150.x

Cited by 92 publications

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“…As a major social and health issue, a solution for anemia is highly desirable. Studies have indicated that sports anemia (anemia induced by vigorous physical training) is mainly associated with intravascular hemolysis, which develops due to an increase in red blood cell destruction induced by exercise 5–7. Various studies have been performed on the factors involved in hemolysis and exceeding the normal exercise tolerance, and it was reported that intravascular hemolysis may develop due to physical factors, such as the bursting of red blood cells in the circulation due to the impact of footfalls,8,9 or an increase in friction between red blood cells and vessel walls due to increased blood flow 10,11.…”

Section: Introductionmentioning

confidence: 99%

Intense Exercise Increases Protein Oxidation in Spleen and Liver of Mice

Kobayashi

Nakatsuji

Aoi

et al. 2014

Nutr Metab Insights

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Studies have indicated that sports anemia is mainly associated with intravascular hemolysis induced by exercise. We hypothesized that such exercise-induced hemolysis leads to oxidative damage due to an increase in free iron caused by hematocyte destruction. Thirty-one male ICR mice were randomly divided into 3 groups: a rested control group, an intense-exercise group, and a group rested for 24 hours after intense exercise. The serum haptoglobin level of the intense-exercise group decreased compared with that of the rested control group, suggesting hemolysis. Tissue iron and protein carbonyl levels in the liver were increased after exercise, and the protein carbonyl level in the spleen on the day after exercise was significantly increased compared with that of the resting state. These results suggest that the spleen and liver, where extravascular hemolysis occurs, were subjected to oxidative modification by the free iron, which was released from large numbers of hemocytes that were destroyed due to the intense exercise.

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Section: Introductionmentioning

confidence: 99%

Intense Exercise Increases Protein Oxidation in Spleen and Liver of Mice

Kobayashi

Nakatsuji

Aoi

et al. 2014

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“…Memolytic anemia. It has been suggested that running on a hard course may result in hemolysis and a reduced osmotic resistance of red blood cells (15,22). In well-trained distance runners it is not always possible to substantiate hemolysis following a race.…”

Section: Discussionmentioning

confidence: 99%

“…However, everything can be exaggerated. Sustained physical training can induce anemia-the so-called "sports anemia" (22). Manifest anemia is here (for both sexes) defined as a clinical condition with B-Hb less than 120 g/l (or less than 7.4 mmol Fe/l).…”

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Runner's Anemia and Iron Deficiency

Hunding

Jordal

Paulev

1981

Journal of Internal Medicine

105

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ABSTRACT. Systemic iron deficiency was found in 63 (56 %) of 113 joggers and competition runners (33 women and 80 men). Thirteen women and ten men had latent anemia. A majority of the women were fertile with iron loss from menstruation; the men were runners training long distances. The average transferrin iron‐binding capacity was 80 μmol/l serum in the women and 77 (iron‐binding groups) in the men. The haptoglobin and iron concentrations in serum were remarkably low (most often below 10 and 20 μ mol/l, respectively). Three of the longdistance runners ran 25 km daily. They returned with so much free hemoglobin in their plasma that an accompanying iron loss (integrated over months), if not balanced by diet, would lead to iron deficiency and anemia. Oral iron therapy (200 mg ferrous sulphate per day) normalized the hemoglobin concentration and improved the transferrin saturation fraction in 61 persons. The competition runners reported personal records.

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“…"Sports anemia" was first described in 1970, and referred to diminished hemoglobin concentrations that occurred in response to physical activity (Yoshimura 1970 Magazanik et al (1988) described reduced serum iron, total iron binding capacity, and serum ferritin in female athletes over a 7-week training period.…”

Section: Potential Causes Of Diminished Iron Status Following Trainingmentioning

confidence: 99%

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2008

Cell Biol Toxicol

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Anemia During Physical Training (Sports Anemia)

Cited by 92 publications

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Intense Exercise Increases Protein Oxidation in Spleen and Liver of Mice

Intense Exercise Increases Protein Oxidation in Spleen and Liver of Mice

Runner's Anemia and Iron Deficiency

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