PMID- 27379793 OWN - NLM STAT- MEDLINE DCOM- 20170214 LR - 20181113 IS - 1439-6327 (Electronic) IS - 1439-6319 (Linking) VI - 116 IP - 9 DP - 2016 Sep TI - Seven days of high carbohydrate ingestion does not attenuate post-exercise IL-6 and hepcidin levels. PG - 1715-24 LID - 10.1007/s00421-016-3426-7 [doi] AB - PURPOSE: This investigation examined if a high carbohydrate (CHO) diet, maintained across a seven-day training period, could attenuate post-exercise interleukin-6 (IL-6) and serum hepcidin levels. METHODS: Twelve endurance-trained male athletes completed two seven-day running training blocks whilst consuming either a high (8 g kg(-1)) versus a low (3 g kg(-1)) CHO isoenergetic diet. Each training block consisted of five running sessions performed on days 1, 2, 4, 5, and 7, with the intensity and duration of each session matched between training weeks. Serum levels of Interleukin-6 (IL-6) and hepcidin were measured pre- and either immediately (IL-6) or 3-h (hepcidin) post-exercise on days 1 and 7 of each training week. RESULTS: During each training week, the immediate post-exercise IL-6 and 3-h post-exercise serum hepcidin levels were significantly elevated (both p = 0.001) from pre-exercise on days 1 and 7. These increases were not different between trials. CONCLUSIONS: These results suggest that the ingestion of a high (compared to low) CHO diet over a seven-day training period is ineffective in attenuating post-exercise IL-6 and hepcidin responses. Such results may be due to the modest training load, the increased protein intake in the low-CHO trial, and a 48 h recovery period prior to sample collection on day 7, allowing a full recovery of muscle glycogen status between exercise sessions. FAU - Badenhorst, Claire E AU - Badenhorst CE AD - School of Sport Science, The University of Western Australia Crawley, Exercise and Health M408, 35 Stirling Hwy, Crawley, 6009, Western Australia. claire.badenhorst@research.uwa.edu.au. FAU - Dawson, Brian AU - Dawson B AD - School of Sport Science, The University of Western Australia Crawley, Exercise and Health M408, 35 Stirling Hwy, Crawley, 6009, Western Australia. FAU - Cox, Gregory R AU - Cox GR AD - Sports Nutrition, Australian Institute of Sport, Gold Coast, QLD, Australia. FAU - Sim, Marc AU - Sim M AD - Western Australian Institute of Sport, Mt Claremont, Western Australia. AD - School of Human Movement and Sport Science, Federation University, Mt Helen, VIC, Australia. FAU - Laarakkers, Coby M AU - Laarakkers CM AD - Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, The Netherlands. AD - Hepcidinanalysis.com, Nijmegen, The Netherlands. FAU - Swinkels, Dorine W AU - Swinkels DW AD - Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, The Netherlands. AD - Hepcidinanalysis.com, Nijmegen, The Netherlands. FAU - Peeling, Peter AU - Peeling P AD - School of Sport Science, The University of Western Australia Crawley, Exercise and Health M408, 35 Stirling Hwy, Crawley, 6009, Western Australia. AD - Western Australian Institute of Sport, Mt Claremont, Western Australia. LA - eng PT - Journal Article PT - Randomized Controlled Trial DEP - 20160705 PL - Germany TA - Eur J Appl Physiol JT - European journal of applied physiology JID - 100954790 RN - 0 (Dietary Carbohydrates) RN - 0 (Hepcidins) RN - 0 (IL6 protein, human) RN - 0 (Inflammation Mediators) RN - 0 (Interleukin-6) SB - IM MH - Adult MH - Dietary Carbohydrates/*administration & dosage/*immunology MH - Exercise/*physiology MH - Hepcidins/*blood/immunology MH - Humans MH - Inflammation Mediators/*blood/immunology MH - Interleukin-6/*blood/immunology MH - Male OTO - NOTNLM OT - Endurance training OT - Inflammation OT - Iron metabolism OT - Nutrition EDAT- 2016/07/06 06:00 MHDA- 2017/02/15 06:00 CRDT- 2016/07/06 06:00 PHST- 2016/06/06 00:00 [received] PHST- 2016/07/01 00:00 [accepted] PHST- 2016/07/06 06:00 [entrez] PHST- 2016/07/06 06:00 [pubmed] PHST- 2017/02/15 06:00 [medline] AID - 10.1007/s00421-016-3426-7 [pii] AID - 10.1007/s00421-016-3426-7 [doi] PST - ppublish SO - Eur J Appl Physiol. 2016 Sep;116(9):1715-24. doi: 10.1007/s00421-016-3426-7. Epub 2016 Jul 5.