- Title
- Influence of post-exercise hypoxic exposure on hepcidin response in athletes
- Creator
- Badenhorst, Claire; Dawson, Brian; Goodman, Carmel; Sim, Marc; Cox, Gregory; Gore, Christopher; Tjalsma, Harold; Swinkels, Dorine; Peeling, Peter
- Date
- 2014
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/158093
- Identifier
- vital:11669
- Identifier
-
https://doi.org/10.1007/s00421-014-2829-6
- Identifier
- ISSN:1439-6319
- Abstract
- PURPOSE: To assess the influence of a simulated altitude exposure (~2,900 m above sea level) for a 3 h recovery period following intense interval running on post-exercise inflammation, serum iron, ferritin, erythropoietin, and hepcidin response. METHODS: In a cross-over design, ten well-trained male endurance athletes completed two 8 x 3 min interval running sessions at 85 % of their maximal aerobic velocity on a motorized treadmill, before being randomly assigned to either a hypoxic (HYP: F IO2 ~0.1513) or a normoxic (NORM: F IO2 0.2093) 3 h recovery period. Venous blood was collected pre- and immediately post-exercise, and after 3 and 24 h of recovery. Blood was analyzed for interleukin-6, serum iron, ferritin, erythropoietin, and hepcidin. RESULTS: Interleukin-6 was significantly elevated (p < 0.01) immediately post-exercise compared to baseline (NORM: 1.08 +/- 0.061 to 3.12 +/- 1.80) (HYP: 1.32 +/- 0.86 to 2.99 +/- 2.02), but was not different between conditions. Hepcidin levels were significantly elevated (p < 0.01) at 3 h post-exercise for both conditions when compared to baseline (NORM: 3.25 +/- 1.23 to 7.40 +/- 4.00) (HYP: 3.24 +/- 1.94 to 5.42 +/- 3.20), but were significantly lower (p < 0.05) in the HYP trial compared to NORM. No significant differences existed between HYP and NORM for erythropoietin, serum iron, or ferritin. CONCLUSION: Simulated altitude exposure (~2,900 m) for 3 h following intense interval running attenuates the peak hepcidin levels recorded at 3 h post-exercise. Consequently, a hypoxic recovery after exercise may be useful for athletes with compromised iron status to potentially increase acute dietary iron absorption.
- Relation
- European Journal of Applied Physiology Vol. 114, no. 5 (2014), p. 951-959
- Rights
- © Springer-Verlag Berlin Heidelberg 2014
- Rights
- This metadata is freely available under a CCO license
- Subject
- 1106 Human Movement and Sports Science; Hepcidin; Hypoxia; Inflammation; Iron metabolism
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