EFFECTS OF IRON SUPPLEMENTATION IN FEMALE ATHLETES WITH LOW SERUM FERRITIN CONCENTRATION
| Autor: | Mikael Fogelholm, L. Jaakkola, T. Lampisjärvi |
|---|---|
| Předmět: |
Adult
medicine.medical_specialty Adolescent Iron Physical Therapy Sports Therapy and Rehabilitation Placebo Hemoglobins Random Allocation 03 medical and health sciences Oxygen Consumption 0302 clinical medicine Internal medicine medicine Blood lactate Humans Orthopedics and Sports Medicine Lactic Acid 030212 general & internal medicine Exercise biology Athletes business.industry VO2 max 030229 sport sciences biology.organism_classification Diet Surgery Ferritin Endocrinology Ferritins Lactates biology.protein Iron supplementation Low serum ferritin Female Hemoglobin business |
| Zdroj: | University of Helsinki |
| Popis: | Low serum ferritin concentrations are commonly found in female athletes. By studying the effects of an 8-week iron or placebo supplementation in 31 female athletes (aged 17-31 years), with an initial serum ferritin concentration less than or equal to 25 micrograms/l and blood hemoglobin 120 g/l, we investigated whether low serum ferritin values hinder aerobic performance. Serum ferritin concentration increased from 14 (25th and 75th percentile: 11, 21) to 26 (18, 36) micrograms/l in the iron-supplemented group, but remained at a low 11 (9, 17) micrograms/l in the placebo group (group difference after supplementation: p = 0.001). Before supplementation, blood hemoglobin concentration was not different in the two groups. After supplementation, however, the concentration in the iron group was 139 (135, 144) g/l and 128 (126, 134) g/l in the placebo group (group difference: p = 0.001). Iron supplementation did not affect blood lactate concentration or VO2max during an incremental ergometer test. Hence, aerobic performance was not impaired in nonanemic female athletes with serum ferritin 25 micrograms/l. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|