Is iron treatment beneficial in, iron-deficient but non-anaemic (IDNA) endurance athletes? A meta-analysis

Burden, Richard; Morton, Katie L.; Richards, Toby; Whyte, G. and Pedlar, Charles (2014) Is iron treatment beneficial in, iron-deficient but non-anaemic (IDNA) endurance athletes? A meta-analysis.

View this record at http://research.stmarys.ac.uk/801/
Official URL: 10.1136/bjsports-2014-093624

Abstract

Purpose The aim of this study was to determine whether iron treatments improve the iron status and aerobic capacity of iron deficient non-anaemic endurance athletes. Method A meta-analysis of studies that investigated the effects of iron treatment on serum ferritin (sFer), serum iron (sFe), transferrin saturation (Tsat), haemoglobin concentration ([Hb]) and (Graphic). Seventeen eligible studies were identified from online databases. Results Analysis of pooled data indicated that iron treatments had a large effect on improving sFer (Hedges’ g=1.088, 95% CI 0.914 to 1.263, p<0.001), sFe (Hedges’ g=1.004, 95% CI 0.828 to 1.181, p<0.001) and Tsat (Hedges g=0.741, 95% CI 0.564 to 0.919, p<0.001) and a moderate effect on improving [Hb] (Hedges’ g=0.695, 95% CI 0.533 to 0.836, p<0.001) and Graphic (Hedges’ g=0.610, 95% CI 0.399 to 0.821, p<0.001). Regression analysis revealed a significant interaction between the effect of iron treatment on sFer and treatment duration, suggesting treatments that lasted beyond 80 days appear to have the least effect on sFer. Conclusions These results indicate iron treatments improve the iron status and aerobic capacity of iron deficient non-anaemic endurance athletes.

Item Type: Article
Keywords: 610 Medicine & health, 612 Human physiology, 796 Athletic & outdoor sports & games
Members: St Mary's University
Depositing User: ULCC Admin
Date Deposited: 08 Nov 2016 12:51
Last Modified: 08 Nov 2016 12:51
URI: http://collections.crest.ac.uk/id/eprint/10378

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