PMID- 16195883 OWN - NLM STAT- MEDLINE DCOM- 20060329 LR - 20181113 IS - 1439-6319 (Print) IS - 1439-6319 (Linking) VI - 95 IP - 5-6 DP - 2005 Dec TI - The effects of carbohydrate supplementation during the second of two prolonged cycling bouts on immunoendocrine responses. PG - 391-9 AB - The purpose of this study was to examine the effect of carbohydrate (CHO) feeding during the second of two 90-min cycling bouts (EX1 started at 09:00 and EX2 started at 13:30) at 60% VO2max on leucocyte redistribution, neutrophil degranulation and oxidative burst and plasma IL-6 and stress hormone responses. This study consisted of two trials, which were completed in a counterbalanced order and separated by at least 4 days. Subjects (n=9) consumed a lemon flavoured 10% w/v CHO (glucose) or placebo (PLA) beverage during EX2: 500 ml just before exercise and 250 ml every 20 min during exercise. Venous blood samples were taken 5 min before exercise, immediately post-exercise, and 18-h post-EX2 for both trials. The main findings of this study were that ingestion of CHO compared with PLA during EX2 better maintained plasma glucose concentration, blunted the responses of plasma adrenaline, ACTH, cortisol, GH and IL-6, and attenuated the leukocytosis and monocytosis, but had no effect on neutrophil degranulation and oxidative burst activity. Furthermore, the immunoendocrine disturbances induced by two bouts of prolonged exercise returned to resting values within 18 h. These findings suggest that ingestion of CHO compared with PLA during the second of two bouts of 90-min cycling at 60% VO2max better maintains plasma glucose, blunts hypothalamic-pituitary-adrenal activation, and attenuates leucocyte trafficking, but does not affect neutrophil function. Furthermore, the disturbances of immunoendocrine responses induced by two bouts of prolonged exercise on the same day recover within 18 h. FAU - Li, Tzai-Li AU - Li TL AD - Institute School of Sport and Exercise Sciences, Loughborough University, Loughborough, LE11 3TU, UK. M.Gleeson@lboro.ac.uk FAU - Gleeson, Michael AU - Gleeson M LA - eng PT - Clinical Trial PT - Journal Article DEP - 20050930 PL - Germany TA - Eur J Appl Physiol JT - European journal of applied physiology JID - 100954790 RN - 0 (Blood Glucose) RN - 0 (Dietary Carbohydrates) RN - 0 (Interleukin-6) RN - 9002-60-2 (Adrenocorticotropic Hormone) RN - 9002-72-6 (Growth Hormone) RN - WI4X0X7BPJ (Hydrocortisone) RN - YKH834O4BH (Epinephrine) SB - IM MH - Adrenocorticotropic Hormone/blood MH - Adult MH - Blood Glucose/metabolism MH - Cell Migration Inhibition MH - Dietary Carbohydrates/*administration & dosage MH - *Dietary Supplements MH - Epinephrine/blood MH - Exercise/*physiology MH - Exercise Test MH - Growth Hormone/blood MH - Humans MH - Hydrocortisone/blood MH - Hypothalamo-Hypophyseal System/*metabolism MH - Interleukin-6/metabolism MH - Leukocyte Count MH - Leukocytes/*immunology MH - Male MH - Neutrophils/immunology MH - Physical Exertion/physiology MH - Pituitary-Adrenal System/*metabolism MH - Respiratory Burst/physiology MH - Time Factors EDAT- 2005/10/01 09:00 MHDA- 2006/03/30 09:00 CRDT- 2005/10/01 09:00 PHST- 2005/06/23 00:00 [accepted] PHST- 2005/10/01 09:00 [pubmed] PHST- 2006/03/30 09:00 [medline] PHST- 2005/10/01 09:00 [entrez] AID - 10.1007/s00421-005-0024-5 [doi] PST - ppublish SO - Eur J Appl Physiol. 2005 Dec;95(5-6):391-9. doi: 10.1007/s00421-005-0024-5. Epub 2005 Sep 30.