PMID- 28605609 OWN - NLM STAT- MEDLINE DCOM- 20180705 LR - 20180705 IS - 1715-5320 (Electronic) IS - 1715-5312 (Linking) VI - 42 IP - 10 DP - 2017 Oct TI - Effects of macro- and micronutrients on exercise-induced hepcidin response in highly trained endurance athletes. PG - 1036-1043 LID - 10.1139/apnm-2017-0207 [doi] AB - Iron deficiency has ergolytic effects on athletic performance. Exercise-induced inflammation impedes iron absorption in the digestive tract by upregulating the expression of the iron regulatory protein, hepcidin. Limited research indicates the potential of specific macro- and micronutrients on blunting exercise-induced hepcidin. Therefore, we investigated the effects of postexercise supplementation with protein and carbohydrate (CHO) and vitamins D(3) and K(2) on the postexercise hepcidin response. Ten highly trained male cyclists (age: 26.9 +/- 6.4 years; maximal oxygen uptake: 67.4 +/- 4.4 mL.kg(-1).min(-1) completed 4 cycling sessions in a randomized, placebo-controlled, single-blinded, triple-crossover study. Experimental days consisted of an 8-min warm-up at 50% power output at maximal oxygen uptake, followed by 8 x 3-min intervals at 85% power output at maximal oxygen uptake with 1.5 min at 60% power output at maximal oxygen uptake between each interval. Blood samples were collected pre- and postexercise, and at 3 h postexercise. Three different drinks consisting of CHO (75 g) and protein (25 g) with (VPRO) or without (PRO) vitamins D(3) (5000 IU) and K(2) (1000 mug), or a zero-calorie control drink (PLA) were consumed immediately after the postexercise blood sample. Results showed that the postexercise drinks had no significant (p >/= 0.05) effect on any biomarker measured. There was a significant (p < 0.05) increase in hepcidin and interleukin-6 following intense cycling intervals in the participants. Hepcidin increased significantly (p < 0.05) from baseline (nmol.L(-1): 9.94 +/- 8.93, 14.18 +/- 14.90, 10.44 +/- 14.62) to 3 h postexercise (nmol.L(-1): 22.27 +/- 13.41, 25.44 +/- 11.91, 22.57 +/- 15.57) in VPRO, PRO, and PLA, respectively. Contrary to our hypothesis, the drink compositions used did not blunt the postexercise hepcidin response in highly trained athletes. FAU - Dahlquist, Dylan T AU - Dahlquist DT AD - a UBC Environmental Physiology Laboratory, School of Kinesiology, University of British Columbia, Vancouver, BC V6T 1Z1, Canada. AD - b Canadian Sport Institute - Pacific, Victoria, BC V9E 2C5, Canada. FAU - Stellingwerff, Trent AU - Stellingwerff T AD - a UBC Environmental Physiology Laboratory, School of Kinesiology, University of British Columbia, Vancouver, BC V6T 1Z1, Canada. AD - b Canadian Sport Institute - Pacific, Victoria, BC V9E 2C5, Canada. FAU - Dieter, Brad P AU - Dieter BP AD - c Providence Health Care, Providence Sacred Heart Medical Center and Children's Hospital, Spokane, WA 99204, USA. FAU - McKenzie, Donald C AU - McKenzie DC AD - a UBC Environmental Physiology Laboratory, School of Kinesiology, University of British Columbia, Vancouver, BC V6T 1Z1, Canada. AD - d Division of Sports Medicine, University of British Columbia, Vancouver, BC V6T 1Z1, Canada. FAU - Koehle, Michael S AU - Koehle MS AD - a UBC Environmental Physiology Laboratory, School of Kinesiology, University of British Columbia, Vancouver, BC V6T 1Z1, Canada. AD - d Division of Sports Medicine, University of British Columbia, Vancouver, BC V6T 1Z1, Canada. LA - eng PT - Journal Article PT - Randomized Controlled Trial DEP - 20170612 PL - Canada TA - Appl Physiol Nutr Metab JT - Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme JID - 101264333 RN - 0 (Biomarkers) RN - 0 (Dietary Carbohydrates) RN - 0 (Dietary Proteins) RN - 0 (Hemoglobins) RN - 0 (Hepcidins) RN - 0 (IL6 protein, human) RN - 0 (Interleukin-6) RN - 0 (hepcidin 25, human) RN - 11032-49-8 (Vitamin K 2) RN - 1C6V77QF41 (Cholecalciferol) RN - 9007-73-2 (Ferritins) RN - E1UOL152H7 (Iron) SB - IM MH - Administration, Oral MH - Adult MH - *Athletes MH - Beverages MH - Bicycling MH - Biomarkers/blood MH - British Columbia MH - Cholecalciferol/*administration & dosage MH - Cross-Over Studies MH - *Diet MH - Dietary Carbohydrates/*administration & dosage MH - Dietary Proteins/*administration & dosage MH - Ferritins/blood MH - Hemoglobins/metabolism MH - Hepcidins/*blood MH - Humans MH - Interleukin-6/blood MH - Iron/blood MH - Male MH - *Nutritional Status MH - Oxygen Consumption MH - *Physical Endurance MH - Single-Blind Method MH - Time Factors MH - Vitamin K 2/*administration & dosage MH - Young Adult OTO - NOTNLM OT - cycling OT - cyclisme OT - hydrates de carbone OT - inflammation OT - iron metabolism OT - metabolisme du fer OT - protein and carbohydrates OT - proteines OT - vitamin D OT - vitamine D EDAT- 2017/06/13 06:00 MHDA- 2018/07/06 06:00 CRDT- 2017/06/13 06:00 PHST- 2017/06/13 06:00 [pubmed] PHST- 2018/07/06 06:00 [medline] PHST- 2017/06/13 06:00 [entrez] AID - 10.1139/apnm-2017-0207 [doi] PST - ppublish SO - Appl Physiol Nutr Metab. 2017 Oct;42(10):1036-1043. doi: 10.1139/apnm-2017-0207. Epub 2017 Jun 12.